While searching for some affordable environmental sensors, we came across the popular and seemingly ideal BME280. This sensor is the digital I2C type, which can function at either 1.8V or 3.3V, offering measurements of barometric pressure, humidity, and temperature consuming low energy in the process and working with high accuracy at affordable and low cost. This is why it is great for temperature monitoring, weather stations, etc.

Due to this, we decided to buy some BME280 sensors from some sellers. However, on two occasions, we got BMP280, which is lesser compared to the BME280. The difference between bmp280 vs bme280 is that the BMP280 has a different ID and lacks humidity measurement. So using the BMP280 didn’t give the desired results and it felt like we made a mistake. This is why we are writing out this information to help you in case you have been supplied a different product and don’t know the difference between bmp280 vs bme280.

Grove BMP280 Barometer Sensor: What is this?

The grove barometer sensor has a high precision and low-cost sensor, which measures the barometer and temperature. Furthermore, this sensor supports the SPI and I2C communication.

It is known as a tiny and cheap atmospheric sensor breakout that helps in measuring barometric pressure and temperature, without having to take up much space. You can get everything you need to know just from its tiny breakout.

This breakout was specially designed for outdoor/indoor navigation, home automation, weather forecasting, wellness monitoring, and personal health. The module makes use of Bosch-manufactured environmental sensors with barometric pressure, temperature sensor, which is the upcoming generation upgrade of the well known sensor BMP183/BMP180/BMP085.

This sensor serves all weather sensing types and will even work effectively for both SPI and I2C. This Bosch’s precision sensor is regarded as the best precision sensing, low-cost solution for the measurement of barometric pressure having an absolute accuracy of  ±1.0 hPa and a temperature measurement accuracy of ±1 degrees centigrade.

Due to the fact that pressure changes with respect to the altitude, the measurements of pressure are so accurate and good that it can also serve as an altimeter having an accuracy of ±1.0 meter.

BMP280 can be regarded as the next generation of sensors. It upgrades the BMP183/BMP180/BMP085 having altitude with low noise of 0.25m. Its conversion time is also similar and fast. Specifications here are also the same and can utilize either SPI or 12C. For easy and simple wiring, choose 12C. Also, if you wish to connect some sensors without having to worry about the collisions of the 12C address, then choose SPI. Just like the BME280 sensor, the BMP 280 can also serve as an accurate altimeter too.

Specifications of the Grove BMP280 Barometer Sensor

• Dimensions 20mm x 40mm
• Current Consumption 0.6 mA
• Supply Voltage 5V or 3.3V
• Barometric Pressure Accuracy ±1.0 hPa
• Barometric Pressure Range 300 – 1100 hPa
• Temperature Measurement Accuracy ±1
• Weight 3g
• Temperature Measurement Range -40 to 85

BMP280 Applications

You may be asking where the BMP280 sensor is useful. As a result of its features and capabilities such as its SPI and I2C compatibility, the BMP 280 sensor is great for any type of weather, as well as environmental sensing. Below are some of the applications of the BMP280.

• Monitoring of fitness
• Control of home automation
• Forecast of weather
• Indoor  navigation (elevator detection, floor detection)
• Outdoor navigation (sports and leisure applications)
• Indicating vertical velocity
• GPS navigation enhancement (dead-reckoning, detection of slopes etc)
• Applications relating to health care i.e. spirometry
• All other projects requiring appropriate reading of the atmospheric pressure

Why is my BMP280 Not Starting?

Have you encountered a scenario where your BMP280 is not starting? If you possess a breakout board that lacks level shifters, then you go ahead to create some making use of some components, just to get the I2C mode moving on, and next, you burn the code into the uno r3 of the Arduino. You will then be surprised to see nothing happening.

For real engineers, you’ve made an attempt, but now it is high time you went through the manual. Usually this is the last resort. After going through, you will discover that the BMP280’s communication mode is fixed on power up made possible by the state of the different control inputs.

SPI utilizes more pins because it helps in defining its interface. Imagine one is unused as the outputs in the SPI mode, and the other used as input in the I2C mode! Take for instance you possess a breakout board, then the control inputs will be left floating. This means it will not just function until you make sure they are properly set before you power up.

What is Grove – BME280 Environmental Sensor?

BME 280 can be referred to as an environmental sensor integrated by Bosch, which measures temperature, pressure, and humidity. By this, users will get a holistic and comprehensive measurement of their environment.

Furthermore, the sensor shows a quick response time to aid in supporting performance requirements, coupled with high accuracy. Asides from this, it is optimized for high resolution and low noise.

For bme280, we will be considering the environmental sensor, how BME280 is relevant to our world today, as well as other sensors related to the BME280.

This sensor is based on the Bosch BME28. This BME28 is known for its high-precision, low-cost, and its ability to support both SPI and I2C communication.

The Grove BME280 offers an accurate measurement of the environment’s humidity, temperature, and barometric pressure.

Due to its great accuracy during pressure measurement, and changes of pressure with altitude, it becomes easy to calculate its altitude with a meter accuracy of +1. This also makes it an accurate and precise altimeter.

Furthermore, there’s no need to be concerned about I2C collisions, because it offers both SPI and I2C interfaces. In order to make use of the SPI, just desolder its bonding pads, which are found on the back of the breakout board of the BME280. For I2C, its board also offers two I2C addresses, giving you the option of choosing whichever you want.

Also present are libraries that have high abstracts. This ensures that users can use the BME 280 to build their projects faster and quicker.

Specifications of the Grove – BME280 Environmental Sensor

• Accuracy of Humidity           ±3%
• Weight G.W                               10g
• Range of Temperature -40 to 85
• Accuracy of Air Pressure        ±1.0 hPa
• Range of Air pressure 300 – 1100 hPa
• Dimensions 40mm x20mm x15mm
• Voltage Supply 5V or 3.3V
• Current Consumption 0.4 mA
• Accuracy of Temperature   ±1

Grove Background

You may have asked what groove is all about. Grove can be described as the personal modular of Seeed. It is also its standard connector prototyping system.

For Grove to help in assembling electronics, Grove utilizes an approach called building block. In contrast to the solder or jumper based system, connecting, building, and experimenting it is easier. This ensures that the system of learning is easy for the hobbyists. You don’t have to worry because it doesn’t get to a point when it begins to dump down.

BME280 Applications

You may be asking where the BME280 sensor can be applied. As a result of its features and capabilities such as its SPI and I2C compatibility, the BME 280 sensor is great for any type of weather, as well as environmental sensing. Below are some of the applications of the BME280.

• Monitoring of fitness
• Control of home automation
• Forecast of weather
• Indoor or outdoor navigation
• GPS navigation enhancement
• All other projects requiring appropriate reading of the atmospheric pressure

BME280 use with Arduino

You can use the environmental sensor Grove-BME280 with different microcontrollers such as Arduino, LinkIt ONE, and Beaglebone. You can achieve this through SPI or I2C. For our example today, we will be explaining to you how to connect your Grove environmental sensor BM280 to the Arduino.

Step by Step Guide

Step One: Connect the BME280 sensor to touch the Grove Base Shield V2 I2C port. After that, plug or insert it to Seeeduino. However, if you lack a Grove Base Shield, the module can be connected directly to the Seeeduino

Step Two: Using a USB cable, connect Seeeduino to the PC

Step Three: Here is the software aspect of the tutorial. First of all, visit Github to download the example and library code.

Step Four: Create a brand new sketch for the Arduino and then paste some codes to it. You can also get access to the code directly just by following this path: File – Example – Barometer_Sensor – Barometer_Sensor

Step Five: This step requires that you upload this code gotten in step five into your Arduino

Step Six: Open the serial monitor in order to receive the data of the sensor, which includes humidity, altitude, value of barometric pressure, and temperature.

That’s all. In these six steps, running the BME280 sensor with Seeeduino becomes very easy. Now let’s consider another sensor related to the BME280, which is the bmp 280.

BMP280 vs BME280: What’s the Difference?

The BMP280 shares similarities with the BME280. Also, they also have a very similar parameter performance. This is why people usually get confused.

However, we will clarify both. BMP 280 can measure just the air pressure and temperature. However, the BME280 can only measure humidity coupled with air pressure and temperature.

Due to this difference, you will get the BMP280 at a much cheaper rate compared to the BME280.

Furthermore, the barometer sensor BMP280 can be seen as a much better development to the barometer sensor BMP180. Also, the environmental sensor BME280 adds the measurement of humidity to the BMP280.

Therefore, if you wish to get just the atmospheric pressure, we advise that you utilize the BMP280. However, if you wish to monitor your environment comprehensively, then we advise that you choose the BME280.

Other ways of detecting differences between bmp280 vs bme280 is by inspecting the pcb visually and by inspecting the package.

Inspecting the PCB visually

Also, you can see the difference between bmp280 vs bme280, just by inspecting the PCB visually. Checking the rear of the PCB, the one colored uniquely with the right printing is genuine. If the P text is covered with a black dot on its module and sold as a BME280, then it’s wrong. This is because the P text, which is hidden or covered, clearly indicates that it is BMP280. Original modules usually don’t come with a mark.

Inspecting the package

Finally, you can know the difference between bmp280 vs bme280 just by inspecting the package visually. If you check the datasheet of the BME280, you will see the markings for devices requiring mass production. This marking has to have ??? U? format. Here, the U signifies BME280. Now, the last ? you are seeing here is just a P, while the final two characters are supposed to be UP.

Comparing with the datasheet of BMP280, the format ought to be ??? K?. Here, the final “?” should be either W, N, U, P. Therefore, KW, KN, KU, KP are all devices of BMP280.

Conclusion

After reading through, you will come to understand that there are some differences between BMP280 vs BME280. If you decide to buy BME280 online, there’s a great chance that what you’ll get is the lesser BMP280. This is because some of these sellers simply don’t know what they are selling. Also, they simply don’t understand the difference between bmp280 vs bme280. Also, the break-out design of a PCB, which is shared between two different sensor types. Due to this reason, it could be frustrating when you buy these sensors. This is because sellers usually do this without getting caught.

To be sure of whatever you have ordered, you will have to spend some more money for modules from industries like Adafruit. Here, everything is properly controlled and labeled.

For most of us, telling the difference between a flex board and a rigid-flex board design needs to be effortless. Well, it all is until it is not. So let us try this: enumerate all the differences you can think of – can you? I thought not.

However, understanding the distinction between flex and the rigid-flex board can make or break your PCB design. You must navigate all the intricacies and master the ruses involved if you want a functional and efficient PCB for your application. But first things first, what is a flex board design? What is a rigid-flex PCB design?

This article seeks to exhaustively tackle the difference between flex board design and rigid-flex design.

What is a Flex Board Design?

A flexible PCB design, often called a flex board design, comes well patterned (printed circuitry) with components that use flexible-based materials. It can either have or lack a cover-lay material.

Like you, most electronic engineers have gotten accustomed to rigid PCB designs. However, a significant trend shift has increased the flex circuit design. While not necessarily a new concept, you will find most contemporary electronics possessing flex circuits. Your smartwatch, printers, mobile phone, keyboards, etc., represent some of the most common electronic examples with flex PCBs.

Flex board designs in other scenarios also possess stiffeners. Such instances happen when your application area demands it. However, unlike many other people, you need to avoid confusing this with rigid-flex PCB design. The two represent two entirely different things.

What is a Rigid-Flex Board Design?

A rigid-flex PCB implies a board that uses rigid and flexible board technologies when deployed. You will find such a board comprising several layers of flex circuit substrate that get attached to more rigid boards (externally or internally).

Your application area often determines the design type, though the flex substrate by design constantly bends. Because of this, you will find it formed in the flexed curve during fabrication or installation.

Another vital point to consider entails its extra challenging design environment compared to the conventional rigid boards. In most cases, you must design a rigid-flex PCB in a 3D environment that provides more spatial efficiency. As a result, you as the engineer or designer can twist, roll, and fold the flex substrate to realize the intended shape for the anticipated application.

Differences Between Flexible PCB Design and Rigid-Flex PCB Design

Considering that the days of rigid printed circuit boards as the sole PCB design option no longer exist, understanding both the flex and rigid-flex PCB design becomes imperative as an engineer. You have to grasp the details about each and the points of departure for each to successfully design a suitable printed circuit board for your unique application.

So, do you want to design a flexible PCB or a rigid-flex PCB but unsure of where to begin? Consider the following guidelines.

Flex PCB Design Guidelines

Knowing the Bendability of Your Flexible PCB

Flexible circuits offer the unique benefit of bendability for challenging application areas requiring constant flexibility. However, as the designer, you should understand how many times the flex PCB will bend, the extent of the bend, and the number of bend times in the application. Such information determines whether to settle for a static or dynamic flex board.

A static flex board implies a flexible circuit that needs to bend upon installation, though it will only bend or flex not more than a hundred times post-installation. On the other hand, a dynamic flex circuit proves more robust. Unlike the static flex board, it must constantly bend and withstand more than tens of thousands of flexes or bends. You will mostly find dynamic flex circuits applied in military and spacecraft applications.

Another crucial aspect to consider concerning the flexibility or bendability of your flex PCB entails the bend radius. The bend radius implies the minimum bend amount of the flex area. Therefore, you must always identify the bend radius early during the design phase to allow for the design to accommodate any amount of bends without subjecting the copper to any damage. So how do you calculate the bend radius?

Consider the number of layers in your flex PCB to calculate your bend radius. For instance, a single layer needs to have an x6 flex thickness, a double amount of thickness for a double layer, and x24 flex thickness for a multilayer flex board.

Consideration for Laying the Bend Radius

• Avoid 90-degree bends that otherwise cause high strain
• Avoid placing plated through-holes in the bend area
• In multilayer flex circuits, stagger the conductors to achieve greater effectiveness
• Conductors measuring less than ten mils need to get placed in the neutral bend axis because of the absence of compression or tension during flexing

Heat-Forming Flexible Printed Circuit Boards

In most cases, the need for heat-forming requires a steel jig. The steel jig forces the PCB board to lie in one specific way before getting into an oven. Heat-forming has a significant advantage in producing a tighter bend radius. However, you can only use it primarily for a more straightforward installation process as much as the tighter bend radius achieves.

Slots and Cutouts in the Bend Area

You can always minimize the bend area or region when it lacks traces. However, the bend radius needs to get minimized by inserting slots or cutouts. Cutouts reduce the number of materials for the bend. It is also possible to seek a different alternative by removing some flex sections without circuitry. However, it would help if you carried it out lengthwise, also needing a routing afterward.

Understand your Flexible PCB Materials

Most flex PCBs use polyimide as the main material for the core and cover-lay layers. Flex materials provide enhanced properties than rigid printed circuit boards. Another crucial benefit of flex material is its uniform thickness with an enhanced dielectric constant of 3.2 to 3.4. The absence of woven glass reinforcement eradicates Dk variations. Similarly, you will get polyimide with a uniform thickness owing to its unique manufacturing process (cast) – a typical layer has a thickness ranging from 0.5 mils to 4 mils.

It is also important to note that polyimide cores (flex) possess either rolled or electro-deposited annealed copper. The copper comes thin and proves ideal for both static and dynamic applications. One of the most common electro-deposits of copper measures 0.5 and 1 ounce, though the limit is 2 ounces. You tend to get the best mix of the thinnest construction.

Flex material types can come in either adhesive-based materials or adhesive-less materials. Adhesive-based materials use acrylic adhesive to bond the copper to the polyimide. Conversely, the adhesive-less type features the copper cast directly to the polyimide. Adhesives, in general, get used to laminating the layer of copper together with the core (polyimide). But in using an adhesive, you can quickly get cracks forming in the copper plating, especially within the vias. It arises because the acrylic adhesive tends to become soft upon heating. As such, you need to integrate tear-drops and anchors when designing.

Drawbacks of Utilizing Adhesive-Based Materials

• It forms cracks within the copper plating, as explained above.
• Incorporating adhesive thickens the copper-clad laminate though eliminating it also leads to thinner laminates.
• All adhesive-based materials tend to absorb environmental moisture. Because of this, it proves best for a system that exposure to the outside environment.
• The core’s thickness can be reduced post the fabrication process, leading to errors in dimensions.

In trying to address the issues outlined, the idea of adhesive-less construction ensued. Some of the critical features of this material include the following.

Adhesive-less Material Features

• Enhanced flexibility because of reduced flex thickness
• A diminished flex thickness owing to the eradication of the layer of adhesive
• An enhanced controlled impedance, especially on signal attributes
• It is well-suited for application in extreme or harsh environments
• It features a better temperature rating than an adhesive-based material

Another crucial point for you to consider regarding understanding your flex materials for your flex PCB entails its looser outline tolerance to other boards. As a result, flex materials have lesser dimensional stability compared to rigid ones. Further, based on the tolerance profile, it may become necessary to use a laser or hard tool cutting, which may prove too expensive.

Similarly, chemicals within the adhesive can become soft upon heating. Therefore, it becomes essential to enlarge your pads as much as possible. Here you can use anchors, spurs, and tear-drops to achieve stability of the outer layer besides reducing stress in your design.

Monitor the Flex Trace Routing

The layout of your circuitry can break or make your printed circuit board. For instance, when you consider the bend radius dimensions, a larger one becomes preferable to the sharp angles, which otherwise shorten the board’s lifespan. Additionally, it would help if you avoided the I-beaming to reduce the copper circuit-thinning stress effect. Remember, curved traces results to lower stress compared to angled traces. Also, keep your traces at a perpendicular angle to that of the general bend. Further, stagger the traces when you place them in two-plus layered PCBs (bottom and top staggering always works)

Position the Flex Layers in the Stack-Up’s Center

It primarily applies to rigid-flex PCBs where you must place the flexible layer between two rigid layers. However, milling the part becomes necessary to expose the flex part. Such an arrangement offers protection to the flex part from exposure to plating of the outer layer. It is an arrangement that also simplifies the manufacturing process besides enhancing control and impedance in the flex region.

However, it is possible to etch away the flex layer as a segment of a different process. It will allow for extra protection.

Mitigate Risks in the Flex Vias

Vias tend to break peel or sometimes crack in flex PCB designs. However, you can always mitigate this by tear-dropping the vias while incorporating the tabs and the anchors. Further, enlarging the annular rings also come in handy.

Benefits of Flex Circuit Boards

If you want to design and use a flex circuit board, you can enjoy a myriad of advantages. It includes ease-of-use, function, fit, etc. Below, some key benefits of flex PCBs.

Ease of Use

• Flex PCBs have few design constraints, with design flexibility to fit any shape or type of device.
• Its motion range permits printed circuit boards to suit every application.
• The reduced mass of flex PCBs limits risks in rough environments like one with consistent vibrations.
• Flex PCBs also have reduced errors otherwise found in most standard printed circuit board assemblies.
• You also get to enjoy a limited weight aspect when using flex PCBs as no extra cables, connectors, and wires exist.

Cost Reduction

The overall installation costs are low

Flex PCBs eliminate a myriad of steps in production, thereby shortening the total turn-time and reducing the cost.

Rigid-Flex PCB Design Guidelines

As one of the fascinating PCB types in the contemporary world, rigid-flex PCBs fuse both elements of flexible circuits and rigid PCBs. The hybrid’s fabrication process mimics that of a conventional hardboard circuit. However, some layers are flexible circuitry and run along through rigid or hardboards. As a designer, you need to consider that the fabricator will have to incorporate plated through holes to ensure a compelling connection between flexible and rigid regions of the circuitry.

Once you factor in such configurations, you can develop a rigid-flex circuit capable of getting assembled as a hardboard PCB. Further, it will also fold besides fitting into the anticipated electronic product without constraints.

A rigid-flex PCB also proves ideal for dynamic flex situations or applications. It can handle a hundred thousand plus flex cycles without any mishaps if well-designed. What is more? You can integrate both the flexible and rigid substrates into a unit capable of further getting manipulated into a three-dimensional subassembly.

Design Guidelines for Rigid-Flex PCBs

A rigid-flex PCB design closely resembles that of a hardboard or rigid design. However, with an experienced eye, you will notice that the flexible layers extend into the board’s rigid areas. Everything notwithstanding, however, a rigid-flex design will require a similar set of requirements to a rigid PCB when it comes to fabrication. For instance, you must submit the Gerber file, nomenclature, solder mask layers, cover-layer, rout files, etc. However, other distinct points of departure exist as well.

But what should you consider when designing a rigid-flex PCB?

Considerations

Material Layup

Material layup can heavily influence a rigid-flex PCB’s total costs, performance, and manufacturability. As a designer, spending a considerable amount of time determining the best material becomes essential. For instance, resistance, controlled impedance, and other requirements like current-carrying can, in turn, affect both material selection and copper weight.

It would help to always collaborate with us at RayMing PCB and Assembly or any other ideal PCB fabricator for material selection deliberations. For instance, variables like costs vis-à-vis cost implication and performance can influence your rigid-flex design. Another essential aspect to consider entails the accepted standard of 20 or fewer layers for rigid-flex boards. However, you can also have rare occasions to design the PCB with more layers. Further, the rigid sections can vary in layer count, provided the material layup and thickness prove similar.

Component Placement

Plenty has happened recently when it comes to design rules. Fresh rules for component placement on a rigid-flex PCB design allow increased freedom, unlike before. For instance, you can now place components within the flexible area of the PCB. Together with a multilayer approach, such an approach allows for more circuitry buildup in your rigid-flex PCB design. However, with greater freedom comes more challenges of holes and routing that you must contend with.

For instance, you cannot place vias or components near the bend line as the flexible segment of the circuit due to the likelihood of material stress. It is also imperative to utilize more thru-hole plating besides bolstering the pad’s support with extra cover-lay to anchor the PCB pads.

Electromechanical Factors

It would help to think of the potential electromechanical factors that can influence both the rigid and flex parts of the PCB. Here, aspects like the bend radius to thickness ratio become important. Always keep the bend radius at least ten times the flex-circuit material’s thickness. It is also vital to develop a “paper doll” to know the bend areas.

Another crucial aspect entails avoiding any stretching of the flex section of the PCB along its inner bend or outer bend. For instance, enhancing the bend angle over 90 degrees also increases its stretching from one end and compression on another flex circuit point. It would be best to consider the type and thickness of the conductor within the bend area. It is possible to reduce the mechanical stress and thickness by reducing the plating on conductors and utilizing pads-only plating. Additionally, heavy gold, nickel, or copper plating reduces flexibility at the bend region, allowing for mechanical stress and potential fracturing.

Teamwork Aspect

Recent printed circuit board design tools provide aspects that allow for the management of several layer stacks, checking design rules, visualizing the three-dimensional electromechanical designs, and simulation of the flex circuit operations. However, the enhanced aspects of the tools notwithstanding, you must incorporate teamwork (fabricators and your team) exceedingly early in the project’s design phase to become successful.

Differences between Flex Circuit and Rigid-Flex PCB and their Production

Flex Circuit	Rigid-Flex PCB
It only has flexible circuitry and thus only flexible substrate or polymer film containing the conductive circuit.	It incorporates both flex and rigid materials by layering flexible substrates within the rigid material.
Moderately low cost of production	The high cost of production
The basis for the development procedure of rigidized flex fabrication	Requires an FPC overlay while the FR-4 material loads up during its manufacturing
Application areas rest on consumer electronic products like cell phones, etc.	Application areas feature satellites, the military, and other high-quality request areas.
A simpler quality control process compared to rigid-flex PCB	A more troublesome quality control process
Mostly has a flexible film created from polyester, polyimide, and PTFE	Possesses flexible cement film and a flexible dielectric film
Offers high flexibility though with differing longevity based on the type (dynamic and flex)	Lesser flexibility though durable

IPC Flex Circuit Standards

Quality verification proves an important aspect of the manufacturing process of flex and rigid-flex PCBs. However, various industry standards exist as benchmarks for any new PCB product. As a PCB designer or engineer, you can either test or use other guidelines to check the quality of your flex and rigid-flex PCBs. But why not use the IPC or Association Connecting Electronic Industries guidelines? Below are some of the best IPC guidelines to start acquainting yourself with.

IPC-6013 (December 2013)

It first came to the fore in 2013 and gave the performance and qualification specification for flexible circuits. It supersedes some of the earlier IPC standards, including the first IPC-6013 established in 1998. The IPC standard specifies diverse test methods, including bend, thermal, and impedance examination or testing. It also entails quality assurance like sample test guidelines and coupons for quality conformance and acceptance tests.

IPC-2223

It offers guidance on picking rigid-flex interface and adhesive materials. You also get tips about flex vias and plated thru-hole.

IPC-FC-234

It is a quality assurance standard that offers insights regarding PSAs or pressure-sensitive adhesives for flex PCB assembly. The guide gives information on the types of adhesives available besides suggested processes for their correct use. It also provides their weaknesses, strengths, and limitations.

IPC-2223 (Sectional Design Standard for Rigid-Flex/ Flexible Printed Boards)

It is a quality assurance guideline document commonly used in conjunction with IPC-2221. IPC-2223 outlines the design specification for flex printed circuits and offers information on interconnecting structures and component mounting.

IPC test methods apply to circuit boards. Such circuit board testing comes as an environment and application-specific process. It often proves a solid foundation for designing reliable, flexible circuits. But as a design or engineering beginner, starting with IP-FC-234 and IPC-2223 can prove a decent place to start from. You will have assurances of reliability for your flexible PCB.

Introduction

Printed circuit boards (PCBs) are essential components in most electronic devices and equipment. They provide the foundation to mount and interconnect electronic components using conductive tracks and pads.

There are different types of PCBs designed for various applications and requirements. The two most common categories are rigid PCBs and flexible PCBs (flex PCBs). Rigid-flex PCBs combine rigid and flexible circuits into one board, taking advantage of both technologies.

This article will compare flex board design versus rigid-flex board design. We will explore the key differences between these two PCB technologies, their applications, pros and cons, and design considerations. Gaining a clear understanding of the distinctions can help you select the right option for your project.

What is a Flex PCB?

A flex PCB, also known as flexible printed circuit board, is fabricated on a thin and flexible dielectric substrate. Common materials used for the flexible dielectric base include polyimide or polyester films.

The tracks are photolithographically etched or printed on the flex circuit, allowing the board to conform to different shapes and be dynamically flexed during use. Components can be soldered directly to a flex PCB or connected using various connectors.

Features and Benefits of Flex PCBs

• Can be bent, twisted, and folded to fit mechanically dynamic applications
• Thin, lightweight, and flexible construction for compact and portable devices
• Can be fabricated in different shapes like circles or complex contours
• Can connect circuits positioned across movable joints or hinged sections
• Highly durable to withstand repeated bending cycles
• Allows three-dimensional wiring paths
• Easy to handle and install during assembly
• Generally lower costs compared to rigid boards for low complexity circuits

Flex PCBs are well-suited for the following applications:

• Wearable devices
• Medical equipment
• Consumer electronics like foldable phones
• Automotive camera systems and sensors
• Industrial robotics and machine controls
• Military avionics systems
• Spacecraft mechanisms

Limitations of Flex PCBs

While flex PCBs provide unmatched flexibility, they also come with some limitations:

• Can only support low component densities and less complex circuitry
• More layers and higher component counts lead to thickness, reducing flexibility
• Components with leads or connectors are hard to mount directly
• Prone to damage without proper strain relief in dynamic flexing applications
• Require robust structural support for most applications
• Generally lower current ratings and power handling capabilities

What is Rigid-Flex PCB?

A rigid-flex PCB integrates rigid boards and flexible circuits into a single interconnected assembly. It combines sturdy rigid sections with dynamic flexing interconnects on the same PCB structure.

The rigid portions provide mechanical support and can host higher component densities, while the flexible sections enable three-dimensional wiring paths. Rigid and flex layers are laminated together using adhesive sheets into a multi-layer sandwich structure.

Features and Benefits of Rigid-Flex PCBs

• Combines advantages of both rigid boards and flexible circuits
• Rigid sections support components and provide structure
• Flexible layers enable out-of-plane interconnections
• Folds into a compact three-dimensional assembly
• Eliminates connectors between separate rigid and flex PCBs
• Simplifies system assembly and enhances reliability
• Allows dynamic flexing at hinges and openings
• Reduces overall weight and improves space efficiency
• Lower costs compared to assembling separate rigid and flex boards

Rigid-flex PCBs suit the following types of products:

• Foldable consumer electronics like laptops
• Portable medical instruments
• Aerospace and defense systems
• Wearable and IoT products
• Automotive camera and sensor modules
• Industrial robotics and automation equipment

Limitations of Rigid-Flex PCBs

While rigid-flex PCBs provide the best of both rigid and flex worlds, they also pose some limitations including:

• Relatively more complex design requirements
• Generally higher fabrication costs
• Need for special flex-rigid assembly processes
• Careful layout required to distribute components and routing
• Challenging to repair or modify once assembled
• Often require additional shielding or strain relief provisions

Key Differences Between Flex PCB and Rigid-Flex PCB Designs

Now that we have looked at the basic features of flex PCBs and rigid-flex PCBs, let’s examine some of the key differences between these two design architectures:

Board Materials

The choice of materials is a major differentiator between flex and rigid-flex designs:

• Flex PCBs only use flexible dielectric films like polyimide
• Rigid-flex PCBs incorporate both rigid laminates (FR-4, polyimide) and flex films

Layer Stackup

Another fundamental difference is the layer stackup:

• Flex PCBs contain single or double-sided conductor layers
• Rigid-flex boards have much more complex layer structures with 4-30+ conductive layers

Circuit Complexity

This leads to significant differences in circuit complexity and component mounting:

• Flex PCBs support only simple wiring with low component counts
• Rigid portions on rigid-flex boards allow high density ICs, fine lines, and small via structures

Conductor Thickness

Conductor thickness is vastly different between the technologies:

• Flex PCB conductors are typically 12-35 microns thick
• Rigid-flex boards use 1 oz (35 microns) copper or thicker up to 3 oz or 105 microns

Outline and Form Factor

The outline and form factors enabled distinguish the two design types:

• Flex PCBs can be fabricated in any 2D shape and fit confined spaces when folded
• Rigid-flex PCBs fold into complex 3D structures but can’t freely flex over entire length

Dynamic Flexing

The ability to dynamically flex during use provides a major contrast:

• Flex PCBs can bend repeatedly to conform to contours and motions
• Rigid-flex PCBs only flex at discrete points determined in the design

Cost

There are notable cost differences as well:

• Simple flex PCBs are relatively low cost for basic applications
• Rigid-flex PCBs entail higher fabrication and assembly costs

Reliability Factors

Reliability considerations vary for the two architectures:

• Flex PCBs require robust strain relief for dynamic bending
• Rigid-flex boards need careful pad layouts to avoid cracks

Rigid-Flex PCB Design Guidelines

Rigid-flex PCB design combines both rigid board and flex circuit layout approaches. Here are some key guidelines for reliable rigid-flex PCB design:

Layer Stack Planning

• Plan conductor layer stackup minimizing rigid-flex transitions
• Use symmetric structures around neutral axis to avoid stress
• Add stiffeners on outer layers of the flex area if needed

High-Density vs Low-Density Areas

• Group high component density areas on the rigid portions
• Place low density wiring on the flexible areas

Component Placement

• Distribute components judicially between rigid and flex zones
• Ensure clearance from edges to avoid rigid-flex interface strains
• Avoid placing heavy components on flex areas

Board Outline and Fold Lines

• Optimize board outline for panel utilization and foldability
• Position fold lines along the neutral bend axis
• Allow sufficient flexibility and clearance for dynamic folds

Routing Considerations

• Route critical signals on inner layers in rigid sections
• Limit length of lines routed across the rigid-flex boundary
• Watch for impedance changes at rigid-flex interfaces

Pad and Via Layout

• Avoid placing pads or vias directly at rigid-flex junctions
• Implement tear-drop pad designs on inner layers at transitions
• Space pads slightly away from edges and fold lines

Shielding Flex Areas

• Add ground planes or traces to shield noise in flex regions
• Incorporate shielding on both sides of a flex layer for better effectiveness

Strain Relief and Reinforcement

• Provide adequate strain relief for dynamic and static flex zones
• Consider reinforcing outer flex layers with additional stiffening

By following these guidelines, you can architect reliable and robust rigid-flex PCB designs.

Comparing Pros and Cons of Flex Boards and Rigid-Flex Boards

To summarize the key trade-offs, here is a comparison of the pros and cons for flex board and rigid-flex board implementations:

Flex PCB Pros

• Extremely thin and lightweight
• Can conform to tight spaces and complex shapes
• Low cost for high-volume applications
• Support millions of dynamic flex cycles
• Simple assembly and installation

Flex PCB Cons

• Limited in component density and layer counts
• Prone to wear and tear failures without strain relief
• Require additional structure and enclosures
• Generally lower current ratings and power handling

Rigid-Flex PCB Pros

• Combines advantages of rigid and flex circuits
• Enables complex circuitry in rigid sections
• Simplifies interconnects across form factors
• Folds into compact 3D configurations
• Eliminates connectors between PCBs
• Consolidates multiple PCB assemblies
• Often lower cost than assembling separate boards

Rigid-Flex PCB Cons

• Relatively higher design complexity
• Fabrication is more expensive than rigid or flex alone
• Repair and modification is difficult after assembly
• Needs careful pad layout at rigid-flex interfaces
• Typically requires additional shielding provisions
• Overall production cost can be higher than flex alone

Comparing Applications of Flex Circuits and Rigid-Flex PCBs

The types of products and applications that typically use flex board or rigid-flex board implementations can also highlight their differences:

Typical Flex PCB Applications

• Wearable devices
• Printer head interconnects
• Military radio antennae
• Medical catheters
• Robotics sensor ribbons
• Consumer electronics flex cables

Typical Rigid-Flex PCB Applications

• Aerospace avionics systems
• Servers with backplanes
• Laptop and portable electronics
• Automotive camera modules
• Industrial machine controllers
• Medical imaging instruments

While simple interconnect applications suit flex PCBs, more complex and dense electronic products benefit from selecting rigid-flex PCB technology. However, the choice depends on the specific requirements, trade-offs and costs involved for an application.

Flex Circuit vs Rigid-Flex PCB: Which is Better?

Whether to use a flex PCB or rigid-flex PCB depends on the particular product requirements and constraints. Here are some key considerations when deciding between the two:

Flex PCBs Are Preferred When:

• Only simple wiring interconnections are needed
• Ability to dynamically flex is required
• Very compact and thin circuit is optimal
• Extremely lightweight construction is critical
• Project budgets are tight

Rigid-Flex PCBs Are Preferred When:

• Complex high-density circuits are required
• Component densities and layer counts are high
• Interconnecting varied form factors and shapes
• Static and dynamic flexing regions are needed
• Overall product costs justify additional PCB expenses
• Reliability is critical over flex life
• Noise control and shielding is important on flex areas

Analyzing the trade-offs allows selection of whether rigid-flex PCB or flex PCB architecture fits best for a particular design. The decision depends on balancing the product’s technical requirements against capabilities and costs.

Summary and Key Takeaways

• Flex PCBs provide ultra-thin and dynamic flexible circuits, while rigid-flex PCBs combine rigid board areas with flexing interconnects.
• Flex PCB construction uses only flexible polymer films enabling tight bend radii, while rigid-flex PCBs incorporate both rigid laminates and flex films.
• Flex boards support simpler circuits with low component counts, whereas rigid portions of rigid-flex PCBs allow much higher densities.
• Rigid-flex designs require careful planning for layer stackups, component placement, routing and pad layouts across rigid-flex junctions.
• Flex PCBs suit low-complexity dynamic flexing interconnect applications with cost limitations, while rigid-flex excels where dense circuits must interface across varied form factors.
• The choice depends on balancing flexibility, complexity, density, reliability, form factor, and cost requirements for a particular product design application.

Flex PCB vs Rigid-Flex PCB – Design Selection FAQs

Q1. When is a flex PCB the best choice over a rigid-flex PCB?

A flex PCB is preferable when only simple wiring is needed in a tight space, the circuit needs to dynamically flex in use, an extremely lightweight or low profile is required, or when project budgets are limited. A rigid-flex PCB would be over-designed in these scenarios.

Q2. When is a rigid-flex PCB the right selection over a flex PCB?

If high component densities, layer counts, and complex circuitry are required, a rigid-flex PCB would be the right choice over flex alone. Rigid-flex is also superior when interconnecting PCBs across varied shapes or enabling both static and dynamic flex regions on the same board.

Q3. What are the typical applications suited for flex PCBs?

Common applications using flex PCB technology include wearable devices, medical catheters, robotics, consumer electronics cabling, printer heads, and military antennae. These leverage the dynamic flexing abilities within the design constraints of flex circuits.

Q3. What types of products typically use rigid-flex PCBs?

Typical products that use rigid-flex PCB technology include portable electronics, aerospace systems, server backplanes, laptops, automotive cameras, machine automation controllers, and advanced medical instruments. These require integrating high complexity ICs across multiple form factors and shapes.

Q5. Does rigid-flex PCB technology completely replace the need for flex PCBs?

No. Rigid-flex PCBs provide a hybrid option blending rigid and flex PCB abilities, but don’t fully replace standalone flex PCBs in all scenarios. Simple flex circuitry with only wiring connections will often use dedicated flex boards when the complexity of rigid-flex is unnecessary.

The choice depends on balancing the trade-offs in flexibility, complexity, density requirements and costs when selecting between flex PCB or rigid-flex PCB implementations for a product.

To answer this question, we will have to examine the design activities associated with the FPGA boards. First, the designer must consider that they need an external USB interface to access the resources on the board (such as input/output and RAM).

After this, let’s look at some design activities made by different designers. In the end, you will learn how you can get some benefits by using a USB-FPGA board.

A USB-FPGA board design process is a method that we can use to produce a new kind of hardware based on the USB interface. This is an exciting way for hardware designers to explore their creativity. It is because this approach offers benefits different from the usual design flow. The following document will give you more information about this subject and how it works.

Background

The idea of creating this project was born when we had to deal with the problem that one of our ASICs (application-specific integrated circuit) was not working properly, and we could not detect why. The only solution we could find was to replace the printed circuit board with a new one. In other words, we had to buy a new board and retire the old one. When speaking about developing technology, it is good to remember that you should be creating something better than before every time you create a new product.

One of the most common difficulties in this field is not enough spare parts for designing new products. The manufacturing and development processes are complex because they have a relationship with several sectors. They include semiconductors, electronics, power, and mechanics. Indeed, all of these sectors need new parts, but it is not easy to obtain them during a difficult time such as this one.

Designers sometimes have to deal with these problems due to a lack of resources and knowledge. However, the idea of this project was to detect some possibilities for developing new products and designs based on the USB protocol.

Different projects that require USB interface support can use this technique. For example, we can use it in a robotic platform design where many sensors and actuators connect to a board. This board can interact with sensors and other partners to control an environment. For example, they include an industrial area or a room where robots handle products.

Definition

From this point of view, we have to define what we mean by USB-FPGA. The basic framework of this project is an FPGA board that has a USB interface. It means that we can connect it to a computer to interact with it and its peripherals by controlling them. Another essential aspect is USB-FPGA designs we can use in different projects such as robot platforms, industrial control, and embedded software platforms.

It is not easy to predict where we will use this technology in the future because we can develop new applications for different purposes. The flexibility of FPGA designs is a benefit used by engineers, but some designers want to create something new.

In other words, even if FPGA designs are flexible, it does not mean that we can use them in all kinds of projects. The important point here is that the USB interface supports different applications, providing more flexibility for computing systems.

Design activities

We will explore the following design activities. FPGA (field-programmable gate array) design resources, FPGA prototyping, and FPGA PCB design.

The FPGA design resources (referring to Application-Specific Integrated Circuits (ASICs)) are essential for different applications such as industrial control and power products. One of the most important reasons these products use FPGA design is its flexibility. It means that we can alter it to produce different configurations.

FPGA prototyping creates a board that uses the FPGA resources to perform different functions. It is possible to create new FPGA circuits in this design activity using an interconnect. The interconnect used for this purpose can be a solderable wire or a cable.

Finally, we can conclude from the above approaches that we can produce FPGA designs using different tools. They Include HDL (hardware description language) using schematic diagrams and test benches.

The process of designing USB-FPGA boards

We can obtain several benefits from the use of this technique. The most important is that it is a new way to control computers on embedded boards. Other advantages include combining the FPGA resources with an external USB interface. Also, it includes having an open architecture for microcontrollers which we can use in different projects.

Basic Architecture

The basic architecture of the board depends on the USB host controller. It also depends on various peripherals that the host controller can control via the USB interface.

The main idea behind this application is to use the FPGA resources to control different kinds of peripherals. We can do this by using an open architecture that supports USB protocol. Another important aspect is using this circuit in applications such as robotics control and embedded control software.

FPGA architecture basics are different from other common solutions. They include external interfaces (for example, an external memory device). It means that it is possible to connect a USB key to store data during the running of FPGA applications.

Some of the system elements that we need to consider in this design are the following:

The main elements of this board are:

Some essential function of this board is to use the FPGA resources to control different peripherals, test functions, and communicate with other systems. Three important components we need to consider while doing this project:

1. FPGA design resource,

2. USB interface resources,

3. External memory device resources.

Another important aspect of this board is that we can produce it using the same design files used in making other applications based on USB-FPGA.

This design is different from several other USB-FPGA designs because it includes more features. In addition, it means that we can use it in projects requiring a new interface, such as an industrial control solution or a robotic platform.

Design Files

We can use many design files for this application. One of them relates to the USB-FPGA design. The other relates to several different applications we can produce with FPGA resources.

We use different designs because there was a need to create new projects that did not require specific hardware.

The USB controller depends on the following files:

USBF_Declares.vhd:

This package declares the USB controller’s constants, arrays, and signal types. We use it for declarations and definitions of different constants to make the other files. We declare all of the USB descriptor arrays in this file.

USBF_Descriptors.vhd:

This package contains the schematic for the USB controller. In addition, it contains files that support the different functions used in making this design and a variety of USB protocol constants and arrays.

VHDL source:

This is the USBF_Descriptors package that includes an altered VHDL file to use FPGA resources. We use them for different interconnecting circuits, memory, and microcontrollers.

USB_INTF.vhd:

This package uses subroutines for some FPGA resources used to control different circuits, USB peripherals, and test functions. Therefore, we alter it to use the FPGA resources that we can use in this solution.

USB_PCI.vhd:

They altered this package to use a USB peripheral based on PCI standards. As a result, it can produce an interface to control all different kinds of peripherals.

USB_Demo.vhd:

We use this file for controlling one of the USB ports on this board. One can alter the files to use a different peripheral (for example, an external memory device instead of a PCI peripheral).

Bugs and Caveats

After making several changes to the USB-FPGA design files used for this application, they made hardware changes to improve the performance. It was possible to use a different external memory device connected to the FPGA. The main reason behind this change was that it is possible to improve the performance of the FPGA design. It is also possible to implement additional functions if there is a need for them.

Some of the main advantages of this design obtained while implementing the changes compared to the initial design are that they can make them easier and cheaper concerning other standard solutions that we can use. Some other advantages relate to USB peripherals, which we can alter using a different device. In addition, it is also possible to use different circuits and peripherals.

Implementing high-Speed USB functionality

USB has earned the popularity it now enjoys due to its ability to be a very fast data transfer rate. They are compatible with the IEEE 1394 standard and can go up to 480MBps

The USB controller used in this project depends on a high-speed USB 2.0 controller. It allows for interfacing with a variety of devices available on the market.

In many cases, the throughput offered by USB is not enough. There is an option to use a USB 1.1 controller, which can achieve speeds of up to 12MBps. However, it also requires a slow communication interface between the host controller and the device

Intel and Microsoft released the first edition of the USB 2.0 specification in 2000. They designed it to provide increased bandwidth for low-speed, full-speed, and high-speed USB devices. One does this while maintaining backward compatibility with USB 1.1 devices

1. USB-based distributed data acquisition system

For applications such as remote data logging or development and testing of wireless communication systems, we require a device that can transmit data from one computer to another over a network. We consider USB to be the easiest way to do this

In this solution, we can see that it is possible to use the FPGA resources. The high-speed USB controllers create a highly effective system that we can use for all kinds of applications. This also includes testing functions and other applications produced using FPGA resources.

2. A typical USB system

USB has several different versions. Each version has different controllers and interfaces, but we can broadly classify them into three major types.

Host-based USB controllers are ICs used for the main host controller used by a host computer to communicate with different peripheral devices.

The online PCB design for this application depends on a PC104-style package. It allows for easier mounting of all the different circuits, components, and peripherals on the board.

3. USB Transceiver + USB Protocol Stack IP + FPGA

A dedicated USB peripheral allows for communication between different networked devices. This is one of the main functions that we achieve when using a USB interface

The manufacturer altered the FPGA resources in this application to support a high-speed USB 2.0 protocol stack. As a result, it was possible to implement all the different features expected from such a solution.

4. Comparing FPGA and ASIC solutions

Using an FPGA can provide many advantages over using an ASIC to implement certain functionality. This is mainly related to the fact that it is possible to alter the functionality of a design. It provides a much better solution that we can use for many different applications.

5. FPGA + Bridge IC (SIE + PHY)

Utilizing the FPGA resources, it is possible to alter the design of a solution that uses a bridge IC.

The Altera DE2 board and the Arty S7-50 board used in this project are efficient, and we can use them to control different devices and circuits. In addition, these boards can support several different peripherals and circuits that we can use to implement various applications.

6. USB Controller + FPGA

Implementing a USB controller on the FPGA is advantageous. We can use it to alter the implementation, and we can use it to provide better performance. In addition, it is also possible to alter the functionality of an existing USB controller by using an FPGA which provides extra flexibility.

Benefits of USB-FPGA board

1. High-performance communication for control and data acquisition

The FPGA can increase performance, mainly because it integrates it with a USB controller. This is also an improvement over other existing solutions based on an ASSP. In addition, the FPGA design in this project is also a simple design that makes use of a minimal amount of resources.

2. USB 2 host controller support

The design of this application depends on a single board solution which includes an Altera DE2 FPGA and a Broadcom BCM2835 ARM processor. This device can support several different peripherals and devices connected to the host controller to provide the required functionality. The design also includes an embedded command processor.

3. Integration of FPGA resources with USB peripheral

Manufacturers use the Altera DE2 development board here. The DE2 Development kit provides a flexible development environment, and it utilizes Altera’s proven Cyclone II FPGA. It has several features that make the implementation of a project much easier. This FPGA also uses several different peripherals available for use by the FPGA.

The Arty S7-50 development board used in this project was essential in achieving the desired functionality. It is a versatile development board that provides a complete development environment. The design of this device also utilizes Altera’s proven FPGA, which depends on the XC7Z010 core.

In addition, the design includes an embedded processor, which we can utilize for several functions.

4. Easy to use out of the box solutions

The design provides FPGA-based USB solutions which are simple to use. We can easily integrate these solutions with several devices and platforms that use USB. It is possible to develop bespoke applications specifically designed for use with these devices.

5. Easy to use after development

The Arty S7-50 board used in this project has several different features that make it easier for the designer to implement a solution. This board can provide FPGA-based solutions that we can easily integrate with several different platforms that make USB use. It is also possible to alter the design, and it is also possible to provide customized applications

6. Modular hardware architecture

We can consider the hardware used in this design a modular-based design. This is due to the reason that it can integrate the required functionality using several available boards. The modified Arty S7-50 board used in this project can be an excellent example of a modular-based design. It is easy to integrate and provides intelligent interfaces.

7. On-board SDRAM and/or SRAM

The Altera DE2 development board kit is an excellent example of an FPGA-based USB design that uses onboard memory. This board has two DDR2 SODIMM sockets that easily upgrade the memory or implement different features. We can use these sockets to provide memory for the device and additional functionality.

8. Interface to external equipment to control and acquire data via the FPGA

We can use this design to integrate with several equipment and devices that make USB use. It is possible to modify the functionality of this equipment, and it is also possible to change the design, which is a good way of achieving much better performance if required.

9. Interface to a host computer for storing and visualizing the data and for controlling the application

We can consider the interface used in this design a JTAG interface essential in providing the required debugging and analysis features. The goal of this interface is to provide a method for debugging. It also allows for easy access to the contents of the FPGA via a host computer.

10. Interface for monitoring the power available from the USB port

The Arty S7-50 development board has an onboard oscillator used to detect the power available from a USB port.

Examples of USB-FPGA board

Some of the specification you will find with these boards include:

• Manufactured In Japan
• Power-on Reset
• Complies with RoHS
• Tested all Input/Ouput
• Credit-Card-Size (86 by 54mm)
• Six layers of high-quality immersion gold PCB
• 10-pin socket JTAG Connector for download
• User LED x2
• Power and Done Status LED
• DIP x1 and Push x1 user Switch
• 50 ppm Oscillator (50MHz) – External clock inputs are available
• SPI-Flash Memory (Micron, 128Mbit)
• SDRAM (Alliance Memory, 256Mbit)
• USB2.0 bridge IC (FT2232H, FTDI) – ESD protection
• Configuration Device
• 100 INPUT/OUTPUT  PAD 100 mil (2.54 mm) grid
• Power: 5.0 V single power supply operation – Separated VCCIO input
  • On-board regulators (3.3 V, 2.5 V, 1.2 V)

Intel (Altera)

[EDA-013] Intel Cyclone 10 LP USB-FPGA board, FTDI USB 3.0 FT601

• 10CL0120YF780C8G: 100 Maximum user Input/output pins (Board), 4 PLL, 525 Maximum user Input/output pins (Device), 288 18 by 18 multipliers, 423 Memory: M9K (kb), and 119088 Logic Elements
• 10CL080YF780C8G: 100 Maximum user INPUT/OUTPUT  pins (Board), 4 PLL, 423 Maximum user INPUT/OUTPUT  pins (Device), 244 18 by 18 multipliers, 305 Memory: M9K (kb), and 81264 Logic Elements

[EDA-011] Intel Cyclone 10 LP F484 USB-FPGA board

• 10CL120YF484C8G: 100 Maximum user Input/output pins (Board), 4 PLL, 277 Maximum user Input/output pins (Device), 288 18×18 Multipliers, 3888 M9K Blocks (kb), and 119088 Logic Elements
• 10CL080YF484C8G: 100 Maximum user Input/output pins (Board), 4 PLL, 289 Maximum user Input/output pins (Device), 244 18×18 Multipliers, 2745 M9K Blocks (kb), and 81264 Logic Elements
• 10CL055YF484C8G: 100 Maximum user INPUT/OUTPUT  pins (Board), 4 PLL, 321 Maximum user INPUT/OUTPUT  pins (Device), 156 18×18 Multipliers, 2340 M9K Blocks (kb), and 55856 Logic Elements
• 10CL040YF484C8G: 100 Maximum user INPUT/OUTPUT  pins (Board), 4 PLL, 325 Maximum user INPUT/OUTPUT  pins (Device), 126 18×18 Multipliers, 1134 M9K Blocks (kb), and 39600 Logic Elements
• 10CL016YF484C8G: 100 Maximum user INPUT/OUTPUT  pins (Board), 4 PLL, 340 Maximum user INPUT/OUTPUT  pins (Device), 56 18×18 Multipliers, 504 M9K Blocks (kb), and 15408 Logic Elements

[EDA-009] Altera Cyclone V USB-FPGA board, FTDI USB 3.0 FT600

• Altera 5CEBA4F23C8N: 100 Maximum user INPUT/OUTPUT  pins (Board), 224 Maximum user INPUT/OUTPUT  pins (Device), 16 Global Clock Systems/Networks, 4 PLLs, 132 18 by 18 multipliers, 3,383 Kbits Embedded memory, and 49 K Logic Elements

[EDA-008]Altera Cyclone V USB-FPGA board

• The Altera 5CEBA4F23C8N: 100 Maximum user INPUT/OUTPUT  pins (Board), 224 Maximum user INPUT/OUTPUT  pins (Device), 16 Global Clock Systems/Networks, 4 PLLs, 132 18 by 18 multipliers, 3,383 Kbits Embedded memory, and 49 K Logic Elements

[EDA-302]Altera Cyclone V USB-FPGA board

• The Altera 5CEBA4U15C8N: 56 Maximum user input/output  pins (Board), 224 Maximum user input/output  pins (Device), 4 PLLs, 16 Global Clock Systems/Networks, 132 18 by 18 multipliers, 3,383 Total Memory (kb), 303 Memory: MLAB (kb), 3,080 Memory: M10K (kb), 18,480 ALM, and 49 K Logic Elements

[EDA-301]Altera Cyclone IV USB-FPGA board

• The Altera EP4CE15F17C8N: 20 Global Clock Systems/Networks, 56 Maximum user INPUT/OUTPUT pins (Board), 4 PLLs, 56 Embedded 18 by 18 multipliers, 165 Maximum user input/output  pins (Device), 15,408 Logic Elements, and 504 Kbits Embedded memory.

Xilinx

[EDX-302] Xilinx Artix-7 USB-FPGA board

• XC7A100T-1FTG256C: 4,860 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 170 Maximum user INPUT/OUTPUT  pins (Device), 1,188 Maximum Distributed RAM (kb), 101,440 Logic Cells, and 15,850 Slices
• XC7A75T-1FTG256C: 3,780 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 170 Maximum user INPUT/OUTPUT  pins (Device), 892 Maximum Distributed RAM (kb), 75,520 Logic Cells, and 11,800 Slices
• XC7A50T-1FTG256C: 2,700 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 170 Maximum user INPUT/OUTPUT  pins (Device), 600 Maximum Distributed RAM (kb), 52,160 Logic Cells, and 8,150 Slices
• XC7A35T-1FTG256C: 1,800 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 170 Maximum user INPUT/OUTPUT  pins (Device), 400 Maximum Distributed RAM (kb), 33,280 Logic Cells, and 5,200 Slices
• XC7A15T-1FTG256C: 900 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 170 Maximum user INPUT/OUTPUT  pins (Device), 200 Maximum Distributed RAM (kb), 16,640 Logic Cells, and 2,600 Slices

[EDX-303] Xilinx Spartan-7 USB-FPGA board

• XC7S100T-1FGGA484C: 4,320 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 338 Maximum user INPUT/OUTPUT  pins (Device), 1,100 Maximum Distributed RAM (kb), 102,400 Logic Cells, and 16,000 Slices
• XC7S75T-1FGGA484C: 3,240 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 338 Maximum user INPUT/OUTPUT  pins (Device), 832 Maximum Distributed RAM (kb), 76,800 Logic Cells, and 12,000 Slices
• XC7S50T-1FGGA48C: 2,700 Total Block RAM (kb), 56 Maximum user INPUT/OUTPUT  pins (Board), 250 Maximum user INPUT/OUTPUT  pins (Device), 600 Maximum Distributed RAM (kb), 52,160 Logic Cells, and 8,150 Slices

[EDX-009] Xilinx Kintex-7 USB-FPGA board, FTDI USB 3.0 FT600

• XC7K160T-1FBG484C: 100 Maximum user INPUT/OUTPUT  pins (Board), 400 Maximum user INPUT/OUTPUT  pins (Device), 8 CMT (MMCMx1+PLLx1), 600 DSP Slice, 11,700 Max Block RAM (kb), 2,188 Max Distributed RAM (kb), 25,350 Slice, and 162,240 Logic Cells
• XC7K70T-1FBG484C: 100 Maximum user INPUT/OUTPUT  pins (Board), 300 Maximum user INPUT/OUTPUT  pins (Device), 6 CMT (MMCMx1+PLLx1), 240 DSP Slice, 4,860 Max Block RAM (kb), 838 Max Distributed RAM (kb), 10,250 Slice, and 65,600 Logic Cells

[EDX-008]Xilinx Kintex-7 USB-FPGA board

• XC7K160T-1FBG484C: 8 CMT (MMCMx1+PLLx1), 600 DSP Slice, 11,700 Max Block RAM Bits, 100 Maximum user INPUT/OUTPUT  pins (Board), 400 Maximum user INPUT/OUTPUT  pins (Device), 2,188 Maximum Distributed RAM (Kb), 25,350 Slice, and 162,240 Logic Cells
• XC7K70T-1FBG484C: 6 CMT (MMCMx1+PLLx1), 240 DSP Slice, 4,860 Max Block RAM Bits, 100 Maximum user INPUT/OUTPUT  pins (Board), 300 Maximum user INPUT/OUTPUT  pins (Device), 838 Maximum Distributed RAM (Kb), 10,250 Slice, and 65,600 Logic Cells

[EDX-301]Xilinx Spartan-6 USB-FPGA board

• XC6SLX16-2CSG225C: 576 K Total Block RAM bits, 56 Maximum user INPUT/OUTPUT  pins (Board), 232 Maximum user INPUT/OUTPUT  pins (Device), 136 K Maximum Distributed RAM bits, 14,579 Logic Cells, and 2,278 Slices

Conclusion

In conclusion, we can say that USB-FPGA designs can allow new designers to use a new type of hardware. Of course, this technique depends on the FPGA resources, and it enables different kinds of projects by using software elements.

USB-FPGA board has a lot of benefits as it enables experts such as RayMing PCB and Assembly to be creative when they design a new product. They can use many resources simultaneously to design something new, and they do not need to wait for spare parts that are not available.

Serial communication protocols play a significant role in technology. These protocols are vital frameworks of an embedded system. They control the transmission of data over the bus. There are several types of serial communication protocols. Each of these protocols has its unique functions.

When creating a development board, there are protocols for relating with active components.  In this article, we will be comparing SPI vs I2C vs UART. These hardware interfaces are commonly used in microcontroller development.

What is SPI?

The SPI means Serial Peripheral Interface. It is a protocol that features four wire-based full-duplex communication. The SPI is one of the most common serial protocols well-suited for faster data rates. It uses four wires which are:

• MISO (Master Out Slave)
• SS/CS (Chip Select)
• SCK (Serial Clock Line)
• MOSI (Master In Slave Out)

The SPI interface makes use of the master-to-slave format to regulate several slave devices with a master. Unlike UART that is asynchronous, SPI is synchronous. SPI utilizes a built-in clock from the master. This helps to ensure the slave and master devices are operating on the same frequency.

The serial peripheral interface is specifically designed for the connection of microcontrollers. This interface functions at full-duplex and operates at faster data transmission rates.  SPI is commonly used in SD cards and display modules.

SPI has continued to take on several forms over the years. Speed is the greatest evolution in SPI.  This protocol is now used in applications featuring speeds greater than 100MHz. SPI can send data in various formats like Quad, Dual, and Single I/O SPI. Data transmissions can be faster if more I/O is being used.

How SPI works

SPI communicates in two different ways.  Firstly, it selects every device with a CS line. Each device needs a separate CS line. The second method involves daisy chaining. Here, every device is connected to another via its data out to the data in line. The number of SPI devices you can connect has no limit.

In the SPI, there is master and slave communication. The master always starts the communication. During the communication, data shifts out from the master and then shifts into the slave. SPI supports multi-slave communication.

SPI works in a different way. It makes use of separate lines for data. This protocol features a higher bus range speed. The SPI is a synchronous serial data transfer between the peripheral device and the CPU. This protocol is ideal when you need a fast and reliable interface.

When working with this protocol you need to have the appropriate set of tools. The inclusion of logic analyzers and oscilloscopes is helpful in the development process. An oscilloscope is a great tool to use when designing the SPI bus.

Pros and Cons of SPI

Pros

• Supports full-duplex
• Utilizes a master’s clock. So, it doesn’t require precision oscillators in slaves
• Faster data transmission rate
• Features simple software implementation
• Has no stop and start bits
• Features no complex slave addressing system

Cons

• There will be complex wiring when more than one slave is in communication
• Utilizes four wires
• Doesn’t acknowledge data receiving
• Doesn’t check errors
• It gives room for a single master

What is I2C?

I2C is one of the serial communication protocols. It means inter-integrated –circuit. This protocol is ideal for modules and sensors. 12C is a bidirectional synchronous serial bus.  It needs two wires for data transmission between devices linked to the bus.

I2C protocol is ideal for applications that require various parts. 12C can have several masters and slaves. You will find I2C in consumer electronics and industrial equipment. 12C can maintain a vivid communication pathway while linking up about 128 devices to the mainboard.

This protocol features two pins. These pins are the Serial Clock Line (SCL) pin and the Serial Data Line (SDL) pin. The SDL transfers and receives data. Meanwhile, the SCL functions as a clock. I2C is a protocol that offers support to slow devices. Here, the master can transmit and receive data from the slave. The master controls the clock bus. However, in some cases, slaves can suppress the clock signal.

I2C protocol connects low-speed, short-distance peripherals on circuit boards. This protocol is commonly used in reading hardware sensors and reading memory.

How does I2C work?

In the I2C protocol, the master transmits a start bit from its SDA pin. After this, the seven-bit address chooses the slave. After it receives the address and start bit, the slave transmits an acknowledge bit to the master. The slave listens to the SDA and SCL for any incoming transmissions.

The master will know if the connection makes it to the correct slave once it gets the transmissions. Then, the master chooses which memory it wants to access from the slave. It achieves this by sending eight bits that specify which register to use.

After the address has been received, the slave prepares the select register. This is done before it sends another ‘acknowledge bit’ to the master. The master transmits the data bit to the slave after choosing the specific slave. After sending the data, the slave sends a final acknowledge bit to the master.

I2C connects devices like microcontrollers with peripheral devices in an embedded system. The peripheral devices serve as the slave devices. The microcontroller serves as the master device. All devices must feature a distinct address to detect it on the bus. This address enables the master devices to exchange communication between the two wires.

The relationship between the slave and master devices isn’t constant. The sending and receiving of data depend on the direction of data transmission at the time. The master must address the slave before it transmits data. It must also address the slave if it wants to get data from the slave.

The host receives the information the slave has sent. Then, the receiver ends the receiving process. The host generates the timing clock. It also terminates data transfer. Also, it is important to link up the power supply via a pull-up resistor.

Pros and Cons of I2C

Pros

• Features a low signal/pin count even with several devices on the bus.
• Supports several masters.
• Supports multi slave and multi-master communication.
• Uses two wires to create communication among several devices.
• It can adapt to the demands of different slave devices.

Cons

• It becomes complicated when there are more master and slave devices
• It has a slower speed
• The interface is half-duplex

What is a UART?

A UART refers to Universal Asynchronous Receiver Transmitter. It is a form of device-to-device digital communication. A UART is a microchip that controls the interface of a computer to its attached serial devices.  It is a protocol used for full-duplex serial communication. The UART is a chip designed to carry out asynchronous communication.

This hardware peripheral converts the outgoing and incoming data into the serial binary stream. UART functions when an application doesn’t require high-speed data transmission. This communication device features a single receiver/transmitter. It needs a single wire for data transmission and another wire for receiving data.

With the help of an RS232-TTL converter, you can interface a URT with a personal computer. This is because a UART and an Rs232 don’t need a clock for receiving and transmitting data. The UART frame features a 1or 2 stop bits and 1 start bit for serial data transfer.

The UART features two core components; the receiver and transmitter. The receiver has a control logic, receiver shift register, and a receive hold register. The transmitter features the control logic, transmit hold register, and transmit shift.

The mode of transmission in a UART is in the form of a packet. A packet features a data frame, stop bits, start bit, and a parity bit. The UART enables the receiver to communicate with the auxiliary device.  This protocol can deal with synchronization management problems between external serial devices and computers.

How does the UART work?

A UART can function between devices in three different ways. These include the simplex, half-duplex, and full-duplex. In simplex, the transmission of data is in one direction. The half-duplex transmits data in either direction. The full-duplex transmits data in both directions simultaneously.

There is data flow from TX of transmitting UART to RX of receiving UART. The TX is the transmit data while the RX is the receiving data. A transmitting UART will get data from a data bus sent by another component. After the UART receives the information from the data bus, it will create the data packet. It needs to include a stop bit, parity bit, and a start bit to create the packet.

The data packet then transmits at the transmit data pin. Here, the receiving UART will interpret the data packet as its receiving data pin. Data transmission continues until data in the transmitting UART finishes.

For data transmission to occur, the receiver and the transmitter must agree with some configurations. These are:

• Start bit
• Baud speed
• Parity bit
• Stop bit
• Data length

UART requires no clocks. It includes stop and start bits being transferred to indicate the beginning and end of a message. With this, the receiving UART will know when bits should start and stop reading. The receiving UART identifies a start bit and reads the bits at the BAUD rate.  This rate is the data transmission speed and is always set to 115,200.

Both the receiving and transmitting UARTs must operate at almost the same baud rate. If the BAUD rate’s difference is above 10%, the bits’ timing may go off. This may render the data useless. You must be certain that UARTs can transfer and receive data from the same packet.

Pros and Cons of Using UART

Pros

• It doesn’t need any clock
• UART is very easy to operate
• Features parity bit that enables error checking
• Uses two wires

Cons

• The data frame size is limited to 9 bits
• Features low data transmission speeds
• UART can’t use several master systems and slaves

SPI vs I2C vs UART – What are the Differences?

UART, SPI, and 12C are serial communication protocols. However, these serial protocols are different in terms of how they operate. Here, we will be comparing the difference between these three protocols.

Pin designations

For a UART, TxD and RxD are the pin designations. The TxD refers to transmit data while the RxD is the receive data. The pin designations for SPI include MISO, SS, SCLK, and MOSI. The MISO refers to Master Input and Slave Output.  SS refers to slave select and SCLK refers to a serial clock. MOSI refers to master output and a slave output.  The pin designations for I2C are serial data (SDA) and serial clock (SCL).

Type of communication

UART is asynchronous communication. It is a form of device-to-device digital communication. SPI and I2C are synchronous.

Clock

UART doesn’t use a common clock signal. Here, both devices utilize their independent clocks. In an SPI, there is only one common clock signal between the slave and master devices. In I2C protocol, there is a common clock signal between multiple slaves and multiple masters.

Software

UART features a one-to-one connection between devices. It doesn’t need addressing. The SPI protocol uses slave select lines to address any slave linked with the master. For I2C, there are multiple masters and multiple slaves. Also, all masters can communicate with slaves. I2C can allow about 27 slave devices to connect to its interface.

Communication Protocol

In terms of protocol, the UART uses a stop bit and a start bit for 8 bits of data. I2C uses stop and start bits. For 8 bits of data I2C uses ACK. This indicates if data has been received.

Number of wires

UART features 1 wire while SPI features 4 wires. On the other hand, I2C features 2 wires.

Conclusion

SPI vs I2C vs UART has been discussed in this article. Each of these communication protocols has its unique features. As a user, it is important you choose a protocol that meets your project’s requirements. For instance, the SPI is an ideal choice if you want the fastest protocol. Meanwhile, if you need to connect several devices, the I2C is the best option.

Circuit boards play an essential role in the electronics industry. This is because they are widely used to play various roles in devices such as computers, televisions, and power systems. Printed circuit boards consist of conductive tracks that interconnect components on the board. They include potentiometers, resistors, capacitors, and switches with various voltage or current levels. They are also typically used for electrical safety testing or verification.

According to JIS C5017, the Japanese industrial standard for measuring the mechanical properties of printed circuit boards, a flexible printed circuit (FPC) is a PCB with a cylindrical or rectangular shape that can change its dimensions depending on the requirements of its application. The standard classifies FPCs into two categories: rigid-type and flexible-type. Rigid-type FPCs help connect parts mechanically but cannot bend. The flexible-type FPC is a double-sided PCB that can withstand bending forces. Additionally, we mainly use it in electrical interconnection applications.

FPCs have become popular among engineers due to their easily modified and customized without any solder joints. The flexibility of the FPC allows for different retrofit solutions. It significantly reduces the cost of printing new boards for a specific application. For example, adding functionality onto the face of an existing board is easier than creating a whole new board from scratch.

Composition of an FPC PCB material

The composition of an FPC material depends on its intended application and end-use. The flexibility of the FPC relies on the material’s ability to resist cracking, warping, and mechanical damage while maintaining high conductivity. As a result, manufacturers tend to make FPC flexible printed circuits from fiberglass or FR-4 materials. It consists of a mixture of epoxy resins and glass fibers. FR-4 is a rigid board that combines both thermal and electrical properties.

1. Insulating film

It is a layer of high-density polyethylene, which is made by extruding resin through a nozzle and applying it over the substrate. The HDPE film eliminates capacitive coupling between the substrate. It also eliminates other circuits to electrically shield interconnections on top of the board. The HDPE layer also serves as a vapor barrier to prevent moisture from entering the circuit during curing.

2. Electrostatic adhesion layer

After applying the HDPE film, an adhesion layer may attach components. These components may include potentiometers and LEDs to the circuit board to improve performance or decrease cost. The adhesion layer is acrylic or polyimide and allows LEDs to bond directly to the FPC, saving materials and assembly time.

3. Conductor

We then add a conductive layer over the top of the adhesion layer. This layer could be a polyimide or epoxy resin or a printed circuit board itself. To avoid warping, we can apply the conductor to a solution that is 100 °C.

4. Enhanced board

Lastly, we add the second layer of adhesion over the conductor to further decrease flexural or cracking problems. We usually make this layer using cellulose or acrylic.

FPC circuit board fabrication

To fabricate an FPC PCB, the components are first pre-assembled onto the board and then cut to size. The FPC material is then placed inside a mold to bend without breaking. Typically, we heat the FPC material to 120 °C for approximately 1 hour. Do this to achieve the necessary stiffness, which allows the material to resist flexors and bend easily. Components are then added to the mold and subjected to pressurization, which causes them to become embedded into the FPC.

Next, we apply a layer of conducting ink over the top of the components. It helps create a smooth surface that prevents electrical resistance and improves performance.

5. Coverlay

A coverlay is a top plate made from either polyimide or acrylic. The coverlay protects the underside of the FPC material. It also serves as insulation to prevent moisture from entering the FPC material. The coverlay also has high-temperature resistance, allowing us to use it in ovens and heaters.

Why do you need to use FPC PCB

We use FPCs in applications when we require flexibility and conductivity. However, we do not use it when we need mechanical strength. Since FPCs are thin and lightweight, we use them in portable devices such as cell phones, digital cameras, and walkie-talkies. We can use them in larger devices such as peripheral and power supplies.

RayMing PCB and Assembly developed FPCs to create light products that one can design quickly without adding much weight.

1. Reduce weight and space

Since FPCs do not have terminals for electrical connectors, we can use them in devices that need to be light but need to connect the output of many components. For example, a portable GPS device can use an FPC to connect a small battery to the main unit. The main unit has an internal rechargeable battery. However, the GPS receiver also needs a power source and several other functions such as a display and buttons. The FPC provides all these components, connecting them.

2. Easy customization

FPCs are flexible, and we can cut them to the desired size. Since they are not soldered, they can be easily removed from the circuit board and modified for new uses. You can make a whole new electronic product by adding an FPC with additional components onto a board already used for another purpose. For example, we can add an FPC to connect an external battery to an existing product. They include a car radio, increasing its functionality without completely replacing it.

3. Meet dynamic flexing requirements

We use FPCs primarily on portable devices with their flexibility and low weight. They can conform to flexible products like a cell phone or cut them to the desired size for a new circuit board. These properties make them an ideal choice for use in consumer electronic products.

4. Flexing for easier installation and service

We use FPCs in solar panels for homes and buildings, satellites, power generators, and electric vehicles. One can install solar panels easily in places where they cannot build a roof, or the landscape makes it difficult. The flexibility of these FPCs means they can conform to many different environments while still providing an electrical pathway between the various components. We also use FPCs in electric vehicles. This is because they have a lightweight structure while maintaining the required strength to ensure they will not break when driven.

5. Impedance control

Manufacturers make FPCs of high-quality materials and have high electrical conductivity. So, we also use them in consumer electronic products that require impedance control. The main advantage of using FPCs instead of soldered connections is that we can easily control the impedance, which is necessary for mobile devices like cell phones.

6. Expandability

We need to expand some electronic devices such as solar panels or electric vehicles later. This is due to technological advances or improving user needs. These products can use an FPC to connect to various other components that we can add later as we require new functions.

7. Increase reliability and repeatability

When we use FPCs in solar panels, we weigh the FPCs and mechanically test them to remain steady once installed. This process ensures that the product will be reliable and operate smoothly in many different environments.

8. Thermal management

Products that we can design use FPCs with good thermal management. Since we cannot solder an FPC to the main board, we can move and replace it with another one to change its thermal properties. This process ensures that the product will always perform well.

9. Improve aesthetics

We can design FPCs to be very thin to reduce the size of the final product and make it look very nice. By printing components on a thin film instead of inside an FPC, one can achieve this. Manufacturers print the components on top of the FPC. It still appears connected to it while retaining its function and appearance.

10. Eliminate connectors

FPCs can eliminate the need for connectors because they can be easily removed and reconnected to other boards. Since there are no connectors and terminals, you do not need to disassemble the product every time you access a cable. You can then reconnect the FPC later, reducing production costs and ensuring that the product looks clean.

11. Reduce assembly cost

FPCs can reduce the assembly cost in many cases. For example, semiconductor companies need to add new components to their production lines. We can use the FPC with other components to create a circuit board. This increases the product’s functionality while decreasing production costs.

12. Increase scalability

FPCs can connect many components onto a central board to create a larger device. Since they are flexible and have low weight, we can assemble these boards into a large product that provides high-performance features.

13. Provide uniform electrical characteristics for high-speed circuitry

Since companies manufacture FPCs using the same high-quality materials and techniques as optical fiber, they provide reliable electrical characteristics for high-speed circuitry. As a result, these circuits can operate at very high speeds without becoming unstable.

14. Improve signal integrity

We can design FPCs to improve signal integrity by reducing noise and reflection. They can also enhance transmission performance and resistance to electromagnetic interference (EMI).

Flexible Circuit Options

The text above demonstrates that FPCs are ideal for various applications. Also, we can replace traditional circuit boards. The polyester (PET) and polyimide (PEEK) materials used in FPCs are conductive. So, they can connect to other circuits and components. They also provide mechanical protection for more robust products. The 1oz thick, Type-V-PET substrate used in the FPC is flexible and can carry large amounts of current. It also withstands high-temperature variations at the same time. This makes it ideal for high-power applications such as solar panels.

Layer 1

We form the “graphic overlay” at this stage. One first cleans the surface, prints the screen, and then cures it to ensure a high-quality printing process with repeatable properties. Layer 1 is where most of the modifications take place. We print the silkscreen or other overlay patterns. We do this usually in a CMYK format, using high-quality inkjet printers to ensure the sharpest possible image.

Layer 2

The lamination stage involves adding the electrical traces. This layer is an electrically conductive adhesive, laminated with the first layer to form the final FPC product. The adhesive must provide a smooth surface to achieve electrical and mechanical stability. We can achieve this via vacuum or pressure lamination, depending on how rigid or flexible the final product needs.

Layer 3

This is the essential layer, as it provides a strong mechanical bond between the first and second layers. One of the most popular adhesive options is a thin ceramic-based adhesive that provides excellent mechanical properties. We can apply this using either hand or automated systems to ensure consistent production quality at each location.

Layer 4

The final layer determines the physical look and feel of the FPCs. The thickness of this layer can vary depending on various factors. They include material type, application requirements, and production location.

We use Flexible Printed Circuits (FPCs) in many different applications such as solar panels, electric cars, and aircraft. Also, we use them in new applications such as aerial drones and wearable electronics. So, FPCs must provide reliable electrical characteristics for high-speed circuitry. The makers of FPCs use more than 20 different chip types and a wide range of specialized components to create the final product.

Difference between PET and FPC

PET is a polymer that we commonly use in FPCs. PET has a low thermal expansion, and it is also transparent, which means we can use it for solar panels or as display panels. On the other hand, FPCs are flexible for high-performance display screens or indoor uses.

Flexible Printed Circuit Board (FPC) is a flexible circuit board with low cost and significant saving of transportation space. When we apply the PCB with many components, their size becomes large. Because of the flexible key feature, the manufacture and construction of the FPC become easy.

Flexible Printed Circuit Card (FPC) combines integrated circuit (IC) and thin-film printed circuit traces. We use them to make a flexible circuit board. A flexible printed circuit card is an electronic device used to house an integrated circuit (IC).

Flexible Printed Circuits (FPC) are thin plastic sheets that we can use in applications. Some examples include solar panels, electric cars, aircraft, and new applications such as aerial drones. We make FPCs from electrically conductive, flexible plastic. One etches and prints the top layer of the plastic with various circuits and components. This helps to create circuitry that is thin enough to be flexible while also being durable.

Flexible Printed Circuit Cards (FPCs) are helpful in many different applications. They include solar panels, electric cars, and aircraft. We also use them in new applications such as aerial drones and wearable electronics. So, FPCs must provide reliable electrical characteristics for high-speed circuitry.

Trace Width Benefits

One of the enormous benefits of FPC technology is maintaining high line widths, which leads to increased performance. This performance improvement is significant for wireless applications. There is a critical difference between the time it takes for radio signals to travel from one point on the board to another and the time it takes for the signal to become disrupted by noise and interference. Higher line width allows for greater signal integrity by reducing these delays while increasing data rate and transmission range.

Another benefit of FPC technology is low dielectric constants (low εr). Compared to other materials, such as FR-4, PET allows for smaller trace widths and increased performance. Using a low εr in FPC traces also reduces line width variation, which results in improved signal integrity.

Electrical Characteristics

FPCs offer several electrical benefits that are largely due to the use of PET. As previously mentioned, PET is a low dielectric material, and, as a result, FPCs using PET can achieve lower line width variation. Reducing line width variation leads to improved noise immunity and signal integrity.

FPCs also allow for easy routing, which results in improved manufacturing yields. Low temperature co-fired ceramics (LTCC) and silicone is also helpful in the FPC process. It provides circuitry with enhanced thermal performance.

The most common FPC fabrication method is transfer printing. This is because it involves transferring electronic ink onto a surface. Then the etching away portions of the surface to create circuitry. Transfer printing allows for very high-speed processing capabilities. We might need circuits that support wireless communication (e.g., WiFi).

Manufacturing Processes

FPC manufacturing is a complex process that involves the use of many different materials and processes. We can make FPCs by transferring ink onto a flexible substrate. This creates circuits and removes substrate portions to expose the circuitry. We then transfer the ink using an ultra-sensitive printer that applies 500-800 g/cm² of pressure.

The ink used in FPC manufacturing includes a mixture of photoinitiators and photoresists. This allows for high-speed propagation. We can print the desired areas of the circuit first. Then we deposit a thin layer on top of the printed area as an etching mask. The exposed areas are then etched away using oxygen plasma to produce the desired circuitry.

The final step of the FPC manufacturing process involves cutting the circuit into appropriate shapes. The circuit must be thin enough to flex with any movement and thick enough to maintain durability and functionality. The thickness of FPCs typically ranges between 0.031 mm and 0.065 mm. However, it can also be as thin as 0.01 mm or even thinner for special applications (e.g., wearable electronics).

Applications Flexible Printed Circuit Board

FPCs have numerous applications in multiple different fields. We use FPCs in solar power cells, cell phones, vehicles, and aircraft. Many of these applications require flexible sheets that are thin and durable. So, they can survive bending, folding, or rolling.

1. Hybrid Electronics

These are a type of electronics with both organic and inorganic components. Hybrid electronics are helpful clothing or building materials with embedded electronic devices.

2. Wearable Electronics

Wearable electronics include everything from fitness trackers to glasses and other products we wear on the body. We have been using FPCs for wearable electronics. This is because of their extremely thin, flexible, and transparent properties. It makes them perfect for integrating clothing and other clothing items.

3. Wireless Communication

We have been using FPCs in many different types of wireless communication. They are good since they offer very high speed and low-power capabilities. They are essential on portable devices such as cell phones, laptops, tablets, smartphones, and more. Many of these products require flexible sheets that can bend without damaging the circuitry. Flexible FPCs enable these products to be ultra-thin and durable. They also offer a range of benefits, such as easy routing and simplified designs.

4. Connectors

We use FPCs in all connectors, including low, high and ultra-high temperature versions. FPC connectors are also essential high-speed cables. They include fiber optic cables and miniature radio frequency coaxial cables (e.g., CAT6).

5. Connector & Housings

FPCs are essential in the connector and housing industry because of their versatility and ease of use. Many companies use FPCs to connect many products, including cell phones and other portable devices. Others also use FPCs to house components such as LEDs and capacitors.

6. Printed Circuit Board

FPCs are essential in printed circuit boards (PCBs). They also work best in sheets of circuitry printed onto a flexible substrate usually made with PET or laminated silicon dioxide. FPCs are ideal for PCBs because they can withstand high temperatures. They can also easily integrate into the board and provide excellent flexibility.

7. Portable Devices

FPCs are applicable in the portable device market because of their thin and durable properties. One of the essential properties of FPCs for this market is that we can fold, roll or bend without damaging them.

8. Solar Power

FPCs are perfect for solar power because of their flexibility, thinness, and environmentally friendly properties. We use them in electronics that convert light into energy. They include solar cells, photoelectrochemical cells, and more. These cells are flexible, thin, and durable and provide high efficiency for solar power.

How much does FPC cost?

Most producers and sellers determine FPC pricing by the type of application, component, and quantity. For example, a small FPC order for a cell phone used as a business card we can price individually. On the other hand, if we use FPCs in solar cells or an aircraft control system, we could price a larger order that includes more components as one order. The FPC pricing is also affected by the type of product or component. For example, flexible FPC PCBs are essential in smaller orders than rigid FPCs. This is because of their lower setup costs and the smaller quantity of the order.

F-LGA and L-CUP are two common flexible printed circuit board types, which are perfect for various applications.

F-LGA is a type of connector commonly referred to as a micro-connector for its small size. This connector has a unique design suitable for applications. They require reliable, low-cost, and lightweight connections. F-LGA is a type of flex PCB used for high-frequency connections in mobile phones, pagers, portable telephones, video cameras, and more.

L-CUP is a connector with an LC interface designed for signal transfer between fiber optic cables used in network equipment such as routers, hubs, and switches. This connector features a high transmission rate with excellent repeatability. L-CUP is a type of flex PCB used in photovoltaic solar cells, medical devices, and aerospace equipment.

Conclusion

FPC is a flexible component used in a wide range of applications. Because of FPC’s versatility, we can use it in many different applications that need an embedded component with high durability and low cost. This flexibility and capability make FPC circuit an ideal component for many items, including solar cells and cell phones.

FPGA boards are relatively new hot items in the electronics circuit market. With FPGA boards, the hardware design engineer can field-test their designs quickly and cheaply. You can do this by running them on experimental hardware. Rather than waiting weeks or months for prototypes to arrive overseas, they can now do that on FPGA boards. They are incredibly versatile pieces of hardware that can do anything from buffering data to communicating with other nodes. All this does not need additional software development. They are cheap and small, making them perfect for the hobbyist scene.

The Xilinx Spartan-6 FPGAs come in several variations, including the LX9, LX10, and LX110 devices. One can equip the LX9 devices with larger memories than the LX100 and LX110 devices. They also have a different processor architecture than the other two devices.

History

FPGA boards have been around for a while, but they have only recently hit the mainstream. The FPGA prototyping board came to the market in the early 90s and became commercially available in 1995. Xilinx Inc. made the first commercial product. It is still one of the leading companies in the FPGA industry today. This product had an onboard memory base of 8MB SRAM, 10MB of flash memory for data logging. It also has two serial ports for communications with computers. It could communicate using SPI, JTAG, and dual-port RAM. The data rate varied from 55Mbit/s to 875Mbit/s. The board was also capable of operating at temperatures between 0 and 70 degrees Celsius.

The price of these boards varied widely depending on the features included. At the time, the Xilinx board cost about CAD 25,000 in 2001 dollars. Other companies produced cheaper alternatives at around CAD 5000 for a 4MB memory board with no flash memory or communications ports. The cost of the boards has decreased dramatically since then, with the cheapest boards costing less than CAD 60 today. The FPGA prototyping board is now a standard in electronic design testing and prototyping.

The Xilinx Spartan-6 FPGA Boards, a new line of FPGA boards from Xilinx, was officially launched in 2007. Their design is compatible with Xilinx’s latest Spartan-6 FPGAs, which are low power and smaller than the Spartan-3 series. With these new FPGAs, lower power requirements and smaller size came at the cost of decreased processing speed and complexity. The Spartan-6 FPGA boards include all the ports necessary to communicate with other computers or devices through USB or RS232.

Xilinx Spartan-6 FPGA Board features

1. Memory

The Xilinx Spartan-6 FPGA Boards have no onboard memory, but they have a small RAM and flash memory for data logging. We can access this data through the four serial ports and the two USB ports. It uses an SPI Flash memory device, which the boards can operate at speeds of up to 400MHz. The Flash memory device can store about 8MB of data, written four times a second. This allows the boards to have a maximum data throughput of 400Mbit/sec. The board does not have any RAM for the temporary storage of information. However, it has a few kilobytes of Flash memory to store data that you need to save long term.
2. I/O Ports

The Xilinx Spartan-6 FPGA boards include all the necessary ports for interfacing with computers or other devices. The board has two USB ports, two RS232 serial ports, and four GPIO (General Purpose Input/Output) pins for handling signals. We can use these to connect it directly to other devices utilizing this interface. The serial ports are capable of speeds of up to 6Mbps. The I/O ports can communicate with other devices, log data, or even send messages to the other computers connected via USB.

3. Resources

The Xilinx Spartan-6 FPGA Boards provide several useful resources for software engineers and hardware designers. The board’s design offers a minimum of 4MB of Co-Processor Cache memory. We can optimize the cache for data-intensive applications by directly connecting with the onboard SPI Flash memory. The net effect is a significantly increased efficiency when dealing with large amounts of data. The boards also include several dedicated I/O pins. It can communicate with other devices without the need for additional software development.

4. Design Resources

The Xilinx Spartan-6 FPGA Boards contain all the essential design resources that are available with other boards. They include a 3x1mm socket for the Spartan-6 FPGA, an SPI Flash memory device, and at least 2MB RAM. The board is therefore capable of performing any development. Their design makes them easy to use by both hardware designers and software engineers.

5. Cost

The Xilinx Spartan-6 FPGA Boards are extremely cost-effective. They cost less than USD 60 in 2008 and less than USD 45 today. This enormous savings over other boards can reach upwards of CAD 20,000 for the cheapest boards. The low price of the Xilinx Spartan-6 FPGA Boards greatly increases their value. It makes them ideal for either hobbyists or production users.

6. Datasheets

The Spartan-6 FPGA Boards structure follows the various datasheets created by Xilinx. These datasheets detail the board’s specifications. They include the exact size of the FPGA and its various peripherals. The manufacturer publishes the specifications in pdf format on the manufacturer’s website and complete information on how to get started with development.

7. Community

The Xilinx Spartan-6 FPGA Boards have a vibrant support community. They often post questions and discussions to the Xilinx forum and answer new users’ questions with detail and patience. They also run Q&A sessions where users can ask complicated questions and receive an instant reply. Because of their newness, the board has a lot of room for growth in this area.

8. Production Capabilities

One can produce the Xilinx Spartan-6 FPGA Boards in volume. They manufacture the board by applying the standard FPGA manufacturing process. It involves several carefully controlled steps that ensure a quality result. One can also produce the board using a configuration that doesn’t require the board to support USB or RS232 interfaces. It is useful in applications where those features aren’t necessary. This would make it much less expensive and smaller as well.

9. Reliability

The Xilinx Spartan-6 FPGA Boards have a low failure rate for individual units. There have been less than five failures of all the boards sold in just the last two years. Their reliability is excellent. The design is sound, and the manufacturing process includes several components that reduce damage due to physical damage or interference.

10. Networking Capabilities

The Xilinx Spartan-6 FPGA Boards are capable of operating in both standalone modes and through an Ethernet network. They include several network interfaces chips. It allows them to communicate directly with other computers and devices. This is useful for development and debugging purposes.

Benefits of the Spartan 6 FPGA Boards

1. Cost-effective

The Spartan-6 FPGA Boards are extremely cost-effective. While they are still more expensive than many other FPGA boards, the Xilinx Spartan-6 FPGA Boards can offer significant savings over boards. They can reach upwards of CAD 20,000 for the cheapest boards. The low price of the Xilinx Spartan-6 FPGA Boards greatly increases their value. It makes them ideal for either hobbyists or production users.

2. Spartan 6 FPGA ICs

The Spartan-6 FPGA is a very high-quality piece of hardware with many advanced features. The FPGAs are high speed, allowing them to operate at speeds of up to 400MHz. They have a large memory capacity, making them ideal for use in large-scale designs. In addition to their internal memory, they directly access external memory through components. A good example is the SPI Flash memory chip. The Spartan-6 FPGA ICs have a high density of logic cells, providing a high processing power. The Xilinx Spartan-6 FPGA boards can operate as standalone devices or as part of a network.

3. Configuration

The Spartan-6 FPGA ICs are very easy to configure using the Xilinx WebPACK software V4.0 and higher. Its configuration is entirely automated, taking only seconds to complete from beginning to end. We can configure the Spartan-6 FPGAs through a simple web interface. This allows both hardware designers and software engineers to make changes easily and quickly.

4. Resources

The Xilinx Spartan-6 FPGA Boards include several useful resources for software engineers and hardware designers. The board can provide a minimum of 4MB of Co-Processor Cache memory. The cache is perfect for data-intensive applications by using a direct connection with the onboard SPI Flash memory.

5. Design Ease

The design of the Spartan-6 FPGA boards is efficient and flexible. The board has several convenient features, like the JTAG header, which allows it to debug. It also includes an accurate temperature sensor. It makes better decisions about what voltage to use when powering the device. The Spartan-6 FPGA Boards have a high density of user I/O pins, allowing them to interface with various devices and peripherals.

6. Datasheets

Manufacturers make the Spartan-6 FPGA boards following the various datasheets created by Xilinx. These datasheets detail the board’s specifications. They include the exact size of the FPGA and its multiple peripherals. It enables designers such as RayMing PCB and Assembly to use advanced data structures. For instance, dynamic arrays and hash tables, to increase performance, improve task throughput and compression.

7. Availability

The Spartan-6 FPGA Boards are readily available from the manufacturer. A company offers the board as a pre-assembled design, ready for immediate production use. Each unit includes a full documentation package and all the components needed to develop. An example is a Spartan-6 LX150 FPGA and associated peripherals.

8. Community

The Xilinx Spartan-6 FPGA Boards have a vibrant support community. They posts questions and discussions to the Xilinx forum and answer new users’ questions with detail and patience. They also run Q&A sessions where users can ask complicated questions and receive an instant reply. Because of their newness, the board has a lot of room for growth in this area.

9. Reliability

The Xilinx Spartan-6 FPGA Boards have a low failure rate for individual units. There have been less than five failures of all the boards sold in just the last two years. Their reliability is excellent. The design is sound, and the manufacturing process includes several components that reduce damage due to physical damage or interference.

10. Networking Capabilities

The Xilinx Spartan-6 FPGA Boards are capable of operating in both standalone modes and through an Ethernet network. They include several network interfaces chips. It allows them to communicate directly with other computers and devices. This is useful for development and debugging purposes.

The Spartan-6 FPGA is a very high-quality piece of hardware with many advanced features.

Limitations of Spartan 6 FPGA Board

1. Documentation

The Spartan-6 FPGA boards are not very well documented in terms of resources, datasheets, or information on using the Xilinx WebPACK software. The manufacturer does provide a small amount of documentation with the board. However, it is usually enough to get someone started with development. It will leave users without prior knowledge of the hardware is a bit of a lurch when they are trying to make basic changes or updates to their project’s configuration using WebPACK.

2. 3.3V Only Power Supply

The power supply of the Spartan-6 FPGA boards is only designed to draw 3.3V from a computer’s USB port or a wall adapter that outputs 3.3V. This means that it cannot ship with a 5V power supply without causing damage to the computer and board itself. The 5V power supplies that it comes with are usually enough for simple demos and basic experiments. Still, they can be challenging to work with when developing larger circuits or more complicated designs.

3. Size

We cannot use the Spartan-6 FPGA boards for huge designs or systems that require many logic cells or other resources. The boards run the Spartan-6 FPGA ICs manufactured by Xilinx. Because of their size, they cannot use memory components with similar specifications.

4. Missing Resources

The Spartan-6 FPGA Boards do not have useful peripherals like clock oscillators and phase-locked loops (PLL). They have a few valuable peripherals. They include a clock oscillator and a PLL, but they could have been more conveniently implemented. For example, the only way to adjust the frequency of the clock oscillator is by using the FPGA pins. This makes it much more challenging to make changes when compared with an external circuit board.

5. Limited Input Devices

The Spartan-6 FPGA boards only come with a limited number of input devices for use with their FPGAs or I/O pins. As the FPGAs are not designed to work with external resources, they will not work with devices that require more than 1 or 2 I/O pins. The board only has 8 I/O pins that we can use in conjunction with a digital interface, and 4 of these are for use by the FPGA interface. The remaining four pins would generally operate as a clock signal, but they also need to go through a buffer to be helpful.

6. Internal Resources

The Spartan-6 FPGA boards do not have a lot of internal resources. It only has 128 KB of internal RAM, which is not enough to run many high-resolution simulations or to use for very granular timing analysis. The FPGA chips come with 96 MB of onboard memory, so it is possible to squeeze in some resources if needed, but this will take up valuable space on the board.

7. Single-Ended I/O Pins

The Spartan-6 FPGA Boards do not come equipped with any differential I/O pins. It makes interfacing with other devices or Oscilloscopes quite difficult. They work with the Xilinx FPGA chip itself, so they only have single-ended I/O pins. For this reason, users should only use the devices with other chips on the same board.

8. Cost

The Spartan-6 FPGA boards are expensive, and their prices can climb quickly when users need to buy things like cables and development kits. The base price of the boards is usually reasonable. However, custom cables and other peripherals will add a substantial amount of money to the cost.

Applications of Spartan 6 FPGA Board

1. High-Speed Data Acquisition

We can connect the Spartan-6 FPGA boards to several analog components and use them for high-speed data acquisition. one can also connect them to various sensors and transducers. They use it as a control device for applications like motion control and robotics. The Xilinx devices are also capable of running applications with real-time constraints. It is helpful for this application.

2. Motion Control

The Xilinx FPGA boards are also designed to support motion control. It allows for simple applications like the rotation of motors, adjustment of stepper motors, or movement of servo motors. We can use them in conjunction with other High-Speed Motion Control devices. They create very compact control systems that we can manipulate using just a computer mouse. The FPGAs even contain their user interface for this purpose.

3. Digital Signal Processing

The Spartan-6 FPGA boards are also beneficial for digital signal processing. We can use them to perform complex tasks in a fraction of the time it takes a computer to do the same thing. The Spartan-6 FPGA is a high-quality device with many high-speed parallelisms, perfect for running this type of application.

4. High-Speed Computing

The Spartan-6 FPGA boards are also great for solving problems using high-speed computing techniques. For example, the boards can implement large, complex neural networks and DSPs that run at speeds that we can consider high-speed. The FPGAs also have a lot of additional hardware. For instance, drivers, power amplifiers, and other helpful hardware for these types of applications.

5. FPGA Neural Networks

The Spartan-6 FPGA boards are also ideal for neural networks. We can configure the modules to run at very high speeds and execute a wide range of tasks. We can use the boards to process video, audio, and analog data streams using a variety of neural network algorithms.

6. DSP

The Spartan-6 FPGA boards are also often used to implement several different digital signal processing algorithms. They work very well for audio processing applications and multimedia applications.

7. FPGA System-on-Chip (SoC)

We can also combine the Spartan-6 FPGA boards with other devices to make an FPGA System on Chip. This type of board is excellent for incorporating a wide range of peripherals. It includes connecting an Ethernet cable and running software. This allows the board to communicate with other devices on the network.

Spartan 6 FPGA Boards

[XP68-04] Xilinx PLCC68 Spartan-6 LX45 FPGA Module

XC6SLX45: 4 CMTs, 50 Maximum user I/O pins (Board), 218 Maximum user I/O pins (Device), 58 DSP Slices, 2,088 Total Block RAM Bits (Kbits), 401 Maximum Distributed RAM (Kbits), 43,661 Logic Cells, and 6,822 Slices

[XP68-03] Xilinx PLCC68 Spartan-6 LX45 FPGA Module

XC6SLX45: 4 CMTs, 50 Maximum user I/O pins (Board), 218 Maximum user I/O pins (Device), 32 DSP Slices, 2,088 Total Block RAM (Kbits), 401 Maximum Distributed RAM (Kbits), 43,661 Logic Cells, and 6,822 Slices

XCM-306] Xilinx Spartan-6 LX TQG144 FPGA board

XC6SLX9: 576 K Total Block RAM Bits, 56 Maximum user I/O pins (Board), 200 Maximum user I/O pins (Device), 90 K Maximum Distributed RAM Bits, 9,152 Logic Cells, and 1430 Slices

XC6SLX4: 216 K Total Block RAM Bits, 56 Maximum user I/O pins (Board), 132 Maximum user I/O pins (Device), 75 K Maximum Distributed RAM Bits, 3,849 Logic Cells, and 600 Slices

[XCM-019Y] Xilinx Spartan-6 FGG484 FPGA board (5 V Tolerant)

XC6SLX75: 132 DSP Slices, 3,096 Total Block RAM Bits, 100 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 692 Maximum Distributed RAM (Kbits), 74,637 Logic Cells, and 11,662 Slices

XC6SLX45: 58 DSP Slices, 2,088 Total Block RAM Bits, 100 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 401 Maximum Distributed RAM (Kbits), 43,661 Logic Cells, and 6,822 Slices

[EDX-301] Xilinx Spartan-6 USB-FPGA board

XC6SLX16-2CSG225C: 576 K Total Block RAM bits, 56 Maximum user I/O pins (Board), 232 Maximum user I/O pins (Device), 136 K Maximum Distributed RAM bits, 14,579 Logic Cells, and 2,278 Slices

[XCM-111] Xilinx Spartan-6 LXT FGG484 FPGA board

XC6SLX150T: 4,824 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 540 Maximum user I/O pins (Device), 180 DSP Slices, 1,355 Maximum Distributed RAM (Kbits), 147,443 Logic Cells, and 23,038 Slices

XC6SLX100T: 4,824 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 498 Maximum user I/O pins (Device), 180 DSP Slices, 976 Maximum Distributed RAM (Kbits), 101,261 Logic Cells, and 15,822 Slices

XC6SLX75T: 3,096 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 348 Maximum user I/O pins (Device), 132 DSP Slices, 692 Maximum Distributed RAM (Kbits), 74,637 Logic Cells, and 11,662 Slices

XC6SLX45T: 2,088 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 296 Maximum user I/O pins (Device), 58 DSP Slices, 401 Maximum Distributed RAM (Kbits), 43,661 Logic Cells, and 6,822 Slices

[XP68-01] Xilinx PLCC68 Spartan-6 LX16 FPGA Module

XC6SLX16: 2 CMTs, 50 Maximum user I/O pins (Board), 232 Maximum user I/O pins (Device), 32 DSP Slices, 576 Total Block RAM Bits, 136 Maximum Distributed RAM Bits, 14,579 Logic Cells, and 2,278 Slices

[XCM-206Z] Xilinx Spartan-6 FGG676 FPGA board

XC6SLX150: 180 DSP Slices, 4,824 Total Block RAM Bits, 296 Maximum user I/O pins (Board), 576 Maximum user I/O pins (Device), 1,355 Maximum Distributed RAM (Kbits), 147,443 Logic Cells, and 23,038 Slices

XC6SLX100: 180 DSP Slices, 4,824 Total Block RAM Bits, 296 Maximum user I/O pins (Board), 480 Maximum user I/O pins (Device), 976 Maximum Distributed RAM (Kbits), 101,261 Logic Cells, and 15,822 Slices

XC6SLX75: 132 DSP Slices, 3,096 Total Block RAM Bits, 296 Maximum user I/O pins (Board), 408 Maximum user I/O pins (Device), 692 Maximum Distributed RAM (Kbits), 74,637 Logic Cells, and 11,662 Slices

[XCM-019] Xilinx Spartan-6 FGG484 FPGA board (5 V I/O)

XC6SLX75: 132 DSP Slices, 3,096 Total Block RAM Bits, 100 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 692 Maximum Distributed RAM (Kbits), 74,637 Logic Cells, and 11,662 Slices

XC6SLX45: 58 DSP Slices, 2,088 Total Block RAM Bits, 100 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 401 Maximum Distributed RAM (Kbits), 43,661 Logic Cells, and 6,822 Slices

[XCM-206] Xilinx Spartan-6 FGG676 FPGA board

XC6SLX150: 180 DSP Slices, 4,824 Total Block RAM Bits, 296 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 1,355 Maximum Distributed RAM (Kbits), 147,443 Logic Cells, and 23,038 Slices

XC6SLX100: 180 DSP Slices, 4,824 Total Block RAM Bits, 296 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 976 Maximum Distributed RAM (Kbits), 101,261 Logic Cells, and 15,822 Slices

Xilinx Spartan-6 FGG484 FPGA board (XCM-110Z, XCM-110, XCM-018, XCM-018Z)

XC6SLX150: 4,824 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 338 Maximum user I/O pins (Device), 180 DSP Slices, 1,355 Maximum Distributed RAM (Kbits), 147,443 Logic Cells, and 23,038 Slices

XC6SLX100: 4,824 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 326 Maximum user I/O pins (Device), 180 DSP Slices, 976 Maximum Distributed RAM (Kbits), 101,261 Logic Cells, and 15,822 Slices

XC6SLX75: 3,096 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 280 Maximum user I/O pins (Device), 132 DSP Slices, 692 Maximum Distributed RAM (Kbits), 74,637 Logic Cells, and 11,662 Slices

XC6SLX45: 2,088 Total Block RAM Bits, 128 Maximum user I/O pins (Board), 316 Maximum user I/O pins (Device), 58 DSP Slices, 401 Maximum Distributed RAM (Kbits), 43,661 Logic Cells, and 6,822 Slices

Conclusion

By considering all the aspects of this board, there is no doubt that the Spartan 6 FPGA Board is the ideal and best for prototyping and rapid design. It is inexpensive, versatile, and easy to configure, so it is the best choice.

Introduction

RS485 and RS232 are widely used serial interface standards for communications in embedded systems, industrial automation and other applications requiring simple point-to-point or multi-drop connectivity.

While both RS485 and RS232 transmit data serially over twisted pair cabling, there are important distinctions between the two interfaces in regards to capabilities, performance and use cases.

This article provides a technical overview and comparison of RS485 vs RS232 in terms of electrical characteristics, timing, cabling, maximum distance, data rates, number of nodes supported, interference immunity, routing topologies and more. Real world examples illustrate optimal application scenarios for each standard.

RS485 Overview

RS485, also known as TIA-485 or EIA-485, is a serial communications standard defined by the TIA/EIA in 1983. It specifies the electrical characteristics and timing requirements for robust transmission of digital data over twisted-pair cabling.

Some key attributes of RS485:

• Balanced differential signaling helps reject noise and interference
• Supports multipoint networks via daisy chaining up to 32 or more nodes
• Operates at data rates up to 10 Mbps over distances up to 4000 feet
• Widely used for industrial sensor networks, building automation, transportation and other applications requiring moderate data speeds and noise tolerance over twisted pair cable

RS485 uses differential balanced transmission and receipt of voltages to enable noise immunity and reliable communication in noisy environments. It can be implemented using simple transceiver chips that convert the single-ended logic levels found on most digital devices to differential signals on the transmission medium.

Now let’s look at some of the technical details behind RS485 and how it supports multi-drop networking.

RS485 Electrical Interface

RS485 signals are carried over a twisted pair of wires to achieve data transmission and receipt. One wire carries the differential bus signal labeled A (+), while the other wire carries the inverted bus signal labeled B (-):

By transmitting signals differentially over the two wires, noise and other common-mode interference gets cancelled out at the receiver. This enhances noise immunity significantly compared to single-ended interfaces.

The driver sends logic 0 by driving A low and B high. Logic 1 is indicated by driving A high and B low. Receivers determine the logic value based on comparing the differential voltage A – V

RS485 transceiver chips handle the conversion between single-ended logic levels and the differential signaling. They also manage the bus transmissions.

Multidrop Support

A major advantage of RS485 is the ability to connect multiple nodes (up to 32) on the same twisted pair through multi-drop bus connections:

The transmitters use tri-state outputs to enable multiple driver connections to the shared bus pair. Only one driver is active during a transmission, while all others are in a high impedance (Hi-Z) state.

This allows all nodes to share access to the same transmission medium. Slave nodes filter out messages not addressed to them based on higher protocol layers.

Differential Signal Immunity

RS485 provides robust interference rejection by leveraging differential signaling where the receiver determines logic value based on the voltage difference between the two wires rather than their absolute voltages.

This renders the interface much less susceptible to common mode noise events like ESD strikes, ground shifts and electromagnetic interference. Both wires are affected approximately equally, so the differential voltage remains steady.

Overall RS485 enables reliable serial communication in challenging electrical environments. It is far more robust than single-ended interfaces.

RS232 Overview

RS232, also referred to as EIA232, is an older serial interface standard introduced in 1960. It specifies connections between DTE (Data Terminal Equipment) and DCE (Data Communication Equipment) using a single-ended transmission scheme.

Some key characteristics of RS232:

• Single-ended signaling rather than differential
• Point-to-point communication between one transmitter and one receiver
• Typical applications include computer serial ports, test equipment and industrial controllers
• Data rates less than 20 Kbps up to distances of 15-50 feet
• Voltage levels ranging from -15V to +15V

While RS232 has been mostly superseded by USB for computer peripherals, it remains popular for simple low speed serial connections over shorter distances. However, noise immunity and maximum distance are both significantly less than differential signaling standards like RS485.

Now let’s take a closer look at the electrical interface used in RS232.

RS232 Electrical Interface

Unlike RS485 which uses differential pairs, RS232 is a single-ended interface with different voltage levels used to signify logic high versus logic low bits.

The diagram below illustrates RS232 voltage levels specified at the driver:

A logic 0 is represented by a voltage between +3V to +15V, while a logic 1 corresponds to a voltage between -3V to -15V. Receivers determine logic value based on these voltage thresholds.

This single-ended signaling provides much less noise immunity compared to differential schemes. Any noise or ground shifts can corrupt the absolute voltage levels leading to communication errors.

Point-to-Point Topology

Unlike RS485 which enables multi-drop networks, RS232 is designed for simple point-to-point communication between two devices:<img src=”https://drive.google.com/uc?export=view&id=1R7vwcSy38l6GzJv-6xdoZnp_LUOW2jpQ” alt=”RS232 point-to-point” width=”350″>

There is one dedicated transmitter and receiver on each end. No concept of bus sharing or collision detection is required. This makes RS232 unsuitable for multi-node topologies.

Limited Distance and Speed

The single-ended design and lack of advanced termination and equalization techniques also severely limit the maximum distance and speed achievable with RS232 compared to differential alternatives:

• Maximum distance limited to 50 feet at lower speeds
• Maximum speed limited to 20 Kbps at short distances
• Typical reliable rates only 2 Kbps up to 15 feet

Thus RS232 is only appropriate for relatively low throughput applications over shorter cable runs. More demanding applications require RS422, RS485 or other interfaces.

RS485 vs RS232 Comparison

Now that we’ve covered the key characteristics of both RS485 and RS232, let’s summarize some of the key differences between them:

As the comparison shows, RS485 provides substantial advantages for high noise environments and applications needing to span longer distances or support multiple node connections.

The only advantage of RS232 is minimal component count for very simple point-to-point links. For all other applications, RS485 is generally preferable.

Real World Application Examples

To better understand the optimal use cases for each standard, let’s look at some real-world examples of RS485 vs RS232 interfaces in practice:

RS485 Example Applications

Industrial Sensors: Connecting multiple temperature, pressure or flow sensors over twisted pair in a factory through daisy-chained RS485 links. Allows spanning large facilities over thousands of feet.

Building Automation: Interconnecting multiple HVAC controllers and devices using RS485 in a large commercial building for sending control and telemetry data across the facility.

Robotics: Connecting controller area network (CAN) or other serial buses between multiple servos, actuators and sensors in a robotics system using RS485’s multi-drop capability.

SCADA Systems: Implementing connections between field devices like RTUs and master controllers in utilities and other SCADA applications usingRS485 for long range communication.

POS Systems: Networking multiple point-of-sale terminals together using RS485’s noise rejection in a busy retail environment with magnetic stripe readers generating interference.

RS232 Example Applications

Computer Peripherals: Simple serial mouse, modem or printer connections to a PC using legacy RS232 ports. Low speed and distances involved match RS232 capability.

Lab Equipment: Instrumentation controllers and devices interconnected over short RS232 links rather than more complex fieldbuses. Suits low density of nodes.

** attenuated RS232 sending radio telemetry

Either RS485 or and

CNC Machines: Some CNC systems use RS232 for basic serial communication between drives, controllers and tactile feedback devices over short distances in electromagnetically noisy environments.

As these examples illustrate, optimal applications of RS485 vs RS232 align closely with their technical characteristics and trade-offs. Understanding these use cases helps apply the right standard during system design.

Conclusion

In summary, RS485 and RS232 represent two serial interface standards optimized for different applications:

• RS485 provides robust noise immunity and multi-drop connectivity ideal for industrial data links spanning long distances
• RS232 offers simple point-to-point communication over shorter ranges in less noisy environments

Engineers should consider parameters like data throughput needs, cable runs, number of nodes, and interference sources when selecting between RS485 vs RS232 during the design process.

For the majority of industrial, building and automation use cases where multiple node connections are needed, RS485 is the superior choice. RS232 remains suitable for basic legacy systems with minimal length and data rate requirements.

By matching interface capabilities closely with application requirements, optimal system reliability and cost can be achieved. Both standards continue to fill important niches for serial data transfer in embedded systems and automation.

RS485 vs RS232 FAQ

Here are some frequently asked questions regarding comparing RS485 and RS232 serial interfaces:

Q: Can RS485 devices communicate with RS232 devices?

A: Yes, with a protocol and electrical level converter that can translate between the different voltages and data formats. Native interoperation is not possible.

Q: What kind of cabling is used with RS485 and RS232?

A: Both typically use shielded twisted pair cabling, though RS485 is also robust over unshielded twisted pair. Coaxial cable can be used for RS232.

Q: Is RS485 full duplex or half duplex?

A: RS485 is half duplex, so data can only flow in one direction at a given time. RS232 supports full duplex communication.

Q: What is slew rate and does it impact RS485 vs RS232?

A: Slew rate limits how fast voltage levels can change. RS485 handles faster slew rates which helps enable higher data rates.

Q: How many RS485 nodes can connect to each other?

A: Up to 32 unit loads can be supported depending on power budget and data rate needs. More devices require repeaters.

Data transfer is getting faster and faster. It was once a feat to download a large file, but now, you can easily move gigabytes of data in seconds. GIGABYTES.

It was also once a feat to transfer data over long distances, but now with the FT600/FT601 series of 4G LTE modems, that is no longer a problem. These two devices are one-of-a-kind and versatile in their ability to transfer data on the go and still be affordable for all home users. They are truly revolutionary for the 21st century!

The FT600 and FT601 are both a product of QUALCOMM, Inc. They offer several distinct features that set them apart from other mobile modems. For example, moving data over long distances and at fast speeds. Let’s talk about just how revolutionary these products are.

The FT600 and FT601 are the first modems to provide 4G LTE on a plane in the sky. Traditional data transfer had a hard time finding a way to move over long distances, but with FT600/FT601, all you have to do is turn it on, and you’re ready to go!

The FT600 utilizes UMTS, WCDMA, CDMA2000 1XRTT, EV-DO Rev.

Data Transfer Semantics

This series has many more features. They include Business Card Transfer, Contact Sheet, and Landscape Writing. These new features allow users to make data transfer easier and safer. It also enables users to print contacts on the same paper as their contact information. This would make it easier for other people to find their contact information.

The FT60X series has a wide vocabulary because it can work with various fonts, sizes, and styles.

We can customize most styles of fonts to suit the user’s needs. The FT60X series supports a wide variety of font styles and size options.

For instance, users can increase the size of their data and maximize their transfer speed. The FT60X series can also print different fonts when they are printing data. For example, you can choose to print your name in italic, which is easier to read at a glance and looks better on printed materials than regular text.

Its file manager is easy to use, too.

FT600/FT601 Features

Compared to its predecessor, a notable improvement of the machine is that you don’t have to remove the paper from the cartridge before it prints. Previously, you would have to take out the cartridge for the machine to print. This feature makes it easier for people with multiple pages on their machines or those trying to print labels and stuff.

Size

The ft600 is about the size of your average cell phone. The ft601 is about twice as small as that of a cell phone. So small, it is only about 1/4 inch thick and will fit in your pocket comfortably.

Display

The ft600 and ft601 display reads differently depending on the function. The FT600 displays the signal strength, while the FT601 displays the mode of operation or power.

Design

The ft600 and FT601 are both a product of QUALCOMM, Inc. They offer several distinct features that set them apart from other mobile modems. For example, moving data over long distances and at fast speeds.

The ft600 utilizes UMTS, WCDMA, CDMA2000 1XRTT, EV-DO Rev.1.

The ft601 utilizes WCDMA, CDMA2000 1XRTT, EV-DO Rev.1

UMTS:

UMTS is the primary mobile broadband data network in Japan and other countries such as India and China. WCDMA is the first mobile broadband data network to provide megabit rate (Mbps) data transfer speeds on a major global scale.

CDMA2000 1xRTT:

This is a network used in Europe, the United States, Canada, and Puerto Rico. CDMA2000 1xRTT allows high-speed data transfer rates up to 28.8Mbps. It provides enhanced voice and video services with more capacity for mobile internet than earlier networks. EVDO Rev.1:

EV-DO Rev.1 is the first mobile broadband data network to provide speeds of 7.2Mbps using a single radio access technology. Broadband Forum has endorsed it and is the preferred mobile broadband technology in Japan, South Korea, and China.

WIFI:

You can wirelessly transfer your data to your PC or laptop using wifi!

GPS:

Allows you to use google maps and view your location on google maps on your computer.

Speeds

Speed depends on carrier and location, so that is Fast Enough for anyone from anywhere! A great note about speed is the transfer rate, and you want it to be fast and reliable, this modem can do that! In other words, there is no “normal” speed for these modems as everybody has a different environment and network to deal with. The FT600 and the FT601 can reach speeds of up to 5.76 Mbps download, up to 384 kbit/s uploads in the downlink, and 384 kbit/s in the uplink. The networks can handle even more data than that. However, they have a limit on spec depending on the upload speed.

Present with parallel FIFO interface that is either 16/32bit wide:

The ft600 and the FT601 are present with a parallel FIFO interface that is either a 16 or 32 bit wide, which means that large files will transfer faster. The large parallel FIFO interface helps increase the throughput of long data transfers. Here, we need to transfer multiple small files simultaneously.

TPE (User Interface)

The ft600 and the FT601 utilize a GUI-based user interface that makes it easy for users to control their modems. This software provides access to all modem functions. The GUI-based interface enables the FT600 and the FT601 we need to use as a modem without any configuration. The ft600 supports a configurable site, preferred access mode, and data transfer speed.

The ft601 does not have a GUI-based user interface, and they lock it to carrier settings.

Data Rate

The ft600 and the FT601 can limit data transfer speeds. Your carrier’s network determines this, meaning you cannot go over 7.2Mbps in download or 384 kbit/s uploads. The ft600 and the FT601 only handle the minimum data transfer rate specified by the carrier you purchase from.

As of now, there are no plans to release any new mainline firmware for the ft600and the ft601.

Up to 8 configurable endpoints:

The ft600 and the FT601 can handle up to 8 configurable endpoints. It means that you can set up your device with multiple connections.

You can also use an over-the-air configuration to configure your modem with any parameters you want. This will allow users to customize their modem.

Users can access 4G LTE worldwide, as long as a carrier supports 4G LTE in the area where they reside.

The ft600/601 is also network-dependent and needs activation. It requires an account with the carrier or other service provider.

Users of the modem will need to purchase a USB cable. The ft600 and the FT601 will connect through a standard-A USB cable.

Built-in 16kB FIFO data buffer RAM

The ft600 and the FT601 have a built-in 16kB FIFO data buffer RAM. This allows users to store data while they are transferring new files. This will enable users to partially complete file transfers without stopping and restarting the process.

The ft600 and the FT601 operate using USB 1.1, which is not USB 2 compatible. Most USB 2 devices will work with the ft600 and the FT601. However, older USB 1 devices and some types of external hard drives will not function properly.

Capability of Supporting multi-voltage I/O: the 1.8V, the 2.5V, and the 3.3V

The ft600 and the FT601 both support multi-voltage I/O, and this means that your computer can operate on the 1.8V, the 2.5V, or 3.3V power sources. This is great if you have a device that requires different power voltages to work properly. For example, a battery-operated device or an external hard drive needs a higher voltage than the computer provides.

The ft600 and the FT601 both support 1kbit/s full-duplex speeds.

Configurable GPIO support

The ft600 and the FT601 both support configurable GPIO, which means that you can use your modem to control external devices. The GPIO port is an input/output port similar to the ports on a computer. Also, the user can configure this port to control almost anything battery-operated.

Configurable power mode

The ft600 and the FT601 have configurable power modes; you can control how your device powers up when it’s turned on. If your modem isn’t powering on when you turn on your computer, you can set it to begin powering up as soon as you plug in the USB cord.

The ft600 and the FT601 have many similarities, such as:

USB 1.1 interface and thus not USB 2 compatible; transfer rates have less capability due to the carrier networks. Both modems support up to 8 configurable endpoints; both modems utilize 1kbit/s full-duplex speeds.

The ft600 is capable of handling up to 5.

Provides USB Battery Charger Detection

The ft600 and the FT601 both provide USB Battery Charger Detection. This allows users to charge their devices while connected to either modem.

The ft600 and the FT601 both charge via the USB interface, meaning that you need a USB cable when using either modem.

The difference between the ft600 and the ft601

The ft600 and the FT601 are identical in hardware, and they have a FIFO buffer of 16kB RAM, a fast USB 1.1 interface, and multi-voltage I/O (1.8V to 3.3V). The ft600 has a GUI-based user interface, supports eight configurable endpoints, and an energy-saving mode that suspends current activity once the modem is inactive for a long period (configurable timeout). Neither the ft600 nor the FT601 supports a boot loader.

The ft600 and the FT601 both utilize USB 1.1. It means that USB 2 devices will not work with either modem.

The modem firmware controls the I/O functions, meaning that a user’s device does not directly control these functions.

Both modems support an energy-saving mode. However, when in energy-saving mode, both modems automatically disable their power outputs if you connect them to a computer where you power off the activity.

The ft600 can handle up to 5 while limiting the ft601 to 4.

Both modems do not support boot loading, meaning that the modem will not retain settings when a power cycle occurs.

The FT600 and the FT601 share similar features such as:

When a modem is active, there are several different power modes that the modem can be in. This allows the user to save energy when they are not using it.

The ft600 and the FT601 each have an energy-saving mode, allowing users to suspend power output until needed.

This is useful if a user needs to conserve power with their modem.

Some manufacturers like RayMing PCB and Assembly have a TCP/IP-based data port that allows the modem to work as a router and bridge. This is useful if you want to route data through multiple modems and use a device that already has an IP address but does not need to use the modem’s IP address (i.e., accessing the internet from a laptop).

Some manufactures offer a GUI-based user interface. This is necessary if you want to configure your modem in any other way than through your computer’s operating system.

The ft600 and the FT601 both support an optional GUI-based user interface. This user interface allows users to access their devices as long as they have a connection to the internet. It is helpful for users who want quick access to their devices and do not wish to search online for configuration options or information.

We can configure the ft600 and the FT601 to connect to a computer with a connected modem. You must follow instructions specific to your operating system.

This is useful for connecting your modem to a different computer or utilizing the same internet connection.

This may allow the modem to use its MAC address as an identifier. However, this depends on the individual configuration of each device.

Applications

1. Writing/word processing

We can also use this series to make short writing and word processing durations. This series can process various fonts, including Arial, Tahoma, Times New Roman, and other common fonts. It can also handle spaces between words and paragraphs correctly, making the writing experience easier than ever before.

This series isn’t very popular in this era of technology because newer models can hold a larger amount of memory and take up less space than these machines.

2. High Bandwidth Data Transfer

This series can transfer a wide range of data, including high-definition images. It has features that allow users to transfer data quickly and easily.

This series is not very popular because newer models can hold more data than these machines can handle.

3. Building Control and Security

This series helps build control and security to transfer information between sensors. The machine will print signs and security passes, making it easier for the user to get a stamp or signature on those documents.

4. Data Logging

We use this series in the shipping industry to log data on the documents one is sending. It can record the weights and readings of any documents, making it easy for people to keep track of their shipments.

This series isn’t very popular because newer models can hold more data than these machines can handle.

5. Environmental Control

We use this series in the oil and gas industry to print out environmental documents. It can record the quality of air and emissions for all shipments.

This series isn’t very popular because newer models can hold more data than these machines can handle.

6. Medical and Laboratory

We use this series in the medical industry to transfer information between documents. It can take accurate readings of any samples and has many features that allow safer data transfers. This includes features like a safety device that prevents exposure to radiation if you contaminate the sample.

7. Home Automation

We use this series in the home automation industry to transfer information between light switches and thermostats. We can connect the machine to other devices like a refrigerator and air condition.

This machine isn’t very popular because these machines aren’t as widely spread in homes as these models are.

8. I/O Expansion

We use this series to expand the machine’s capabilities without buying new cartridges. It can also be helpful to connect the printer to other USB devices.

This series isn’t very popular, partly because newer models can handle more data than these machines can handle.

9. Industrial Control / Monitoring

We use this series in the industrial control and monitoring industry to transfer information between documents. Machines like these help monitor factories’ environments and prevent catastrophes by providing an early warning. This machine isn’t very popular, mainly because newer models can handle more data than these machines can handle.

10. IoT / Sensor interfacing

Companies use this series to transfer information from sensors. We can also connect the FT60X to a temperature sensor or a light sensor. It can also connect other devices, like pressure gauges or water level monitors.

11. High-Resolution Video Transfer

We use this device in the film industry. It allows you to transfer high-definition videos through Bluetooth. It makes it easier for people to send videos over long distances without losing quality.

12. Retail

Major retail companies like Target, Best Buy, and Staples use this series. It allows them to transfer data from security tags with barcode readers. This machine is not very popular because some newer models can hold more data than these machines can handle.

FT600/FT601 series boards

Key Device Features include:

• Extended operating temperature range: -40°C to 85°C
• Integrated power-on-reset circuit
• Provides USB Battery Charger Detection (BC1.2.)
• Integrated 1V regulator
• Programmable ROM
• Supports Remote Wake-up capability
• Configurable GPIO support
• Supporting multi-voltage I/O: the 1.8V, the 2.5V, and the 3.3V (USB-106 supports only 3.3V)
• Built-in 16kB FIFO data buffer RAM
• Up to 8 configurable endpoints (pipes)
• Supports multi-channel FIFO interface
• Capability of supporting two parallel slave FIFO bus protocols, that have up to 200Mbps of data bursting rate
• Available with 16bit wide parallel FIFO interface
• Supporting USB3.0 SuperSpeed, USB 2.0 Full Speed and USB High Speed transfer

[EDA-013] Intel Cyclone 10 LP USB-FPGA board, FTDI USB 3.0 FT601

• 10CL0120YF780C8G: 100 Maximum user Input/Output pins(Board), 525 Maximum user Input/Output pins(Device), 4 PLLs, 288 18 by 18 multipliers, 432 Memory: M9K (kb), and 119088 Logic Elements/Parts
• 10CL080YF780C8G: 100 Maximum user Input/Output pins(Board), 423 Maximum user Input/Output pins(Device), 4 PLL, 244 18 by 18 multipliers, 305 Memory: M9K (kb), 81264 Logic Elements/Parts

[EDA-009] Altera Cyclone V USB-FPGA board, FTDI USB 3.0 FT600

• Altera 5CEBA4F23C8N: 100 Maximum user Input/Output pins(Board), 224 Maximum user Input/Output pins(Device), 16 Global Clock Systems/Networks, 4 PLLs, 132 18 by 18 multipliers, 3,383 Embedded memory (Kbits), and 49 K Logic Elements/Parts

[EDX-009] Xilinx Kintex-7 USB-FPGA board, FTDI USB 3.0 FT600

• XC7K160T-1FBG484C: 100 Maximum user Input/Output pins(Board), 400 Maximum user Input/Output pins(Device), 8 CMT (MMCMx1+PLLx1), 600 DSP Slice, 11,700 Max Block RAM (kb), 2,188 Max Distributed RAM (kb), 25,350 Slice, and 162,240 Logic Cell
• XC7K70T-1FBG484C: 100 Maximum user Input/Output pins(Board), 300 Maximum user Input/Output pins(Device), 6 CMT (MMCMx1+PLLx1), 240 DSP Slice, 4,860 Max Block RAM (kb), 838 Max Distributed RAM (kb), 10,250 Slice, and 65,600 Logic Cell

[USB-107] FT601 Evaluation Board and [USB-106] FT600 Evaluation Board

Specifications (USB-107/106)

• Made In Japan
• Non-use of 6 Restricted substances of RoHS directive
• Four-layer PCB with Immersion gold
• DIL 80-pin header for user I/F
• USB3.0 Cable (1.0m)
• Power-on reset IC
• On-board 3.3V regulator
• Operate from 5.0V or 3.3V power supply
• 40-pin user interface
• USB3.0 B Connector

Specifications for (FT600/601)

• Extended operating temperature range: -40°C to 85°C
• Integrated power-on-reset circuit
• Provides USB Battery Charger Detection
• Supports Remote Wake-up capability
• Configurable GPIO support
• Support for multi-voltage Input/Output: the 1.8V, the 2.5V, and the 3.3V
• Built-in 16kB FIFO data buffer RAM
• Up to 8 configurable endpoints (pipes)
• Supports multi-channel FIFO interface
• Supporting 2 parallel slave FIFO bus protocols, that have to 400Mbps max of data bursting rate
• Obtainable with a parallel FIFO interface that has a width of either 16bit/32bit
• Supporting the USB3.0 SuperSpeed (5Gbps), 12Mbps USB 2.0 Full Speed, and 480Mbps USB High Speed transfer

Conclusion

The ft600 and the FT601 are almost identical, the difference being the GUI and the energy-saving mode. They add GUI for user convenience but can be a hassle if your computer requires you to use a different port than your modem. I would recommend an ft600 if you want up to 8 endpoints. However, if you want to power off your computer without powering your modem, I would go with the FT601.

The ft600 and the FT601 are excellent choices for anybody looking for a cheap, portable modem. With either modem, you can access the internet anywhere, as long as you have service.

The ft600 and the FT601 will provide a lifetime of maintenance-free, on-the-go internet access. They are reliable and rugged even in harsh environments. You will get a fast connection and connect to multiple devices with both modems.

If you are planning to make an electronic device, it is essential to know how thick the PCB will be. This includes knowing how much time and money you will save when using thin flex PCBs.

To choose the perfect thickness, there are a few things that you will need. They include a measurement tool, an understanding of what thickness is suitable for your product, and the number of components on your PCB design. It is also wise to ask the following questions:

1. What is the product going to use it for?

This is an essential question that dictates the material of your PCB. If you plan to use it for hiking, you need a very sturdy material that you can use outdoors under any weather conditions. On the other hand, thin material is sufficient if you use it for a diy flex PCB.

When selecting a PCB application, PCB board thickness is an important consideration. Flex Circuit thickness determines how many layers of circuitry can reside on a single board. It also determines how tough the material is to withstand environmental stresses such as high temperature and vibration. Electronic devices will often use multiple PCBs. So, managing the thickness is a design consideration, especially if the device is large and requires many boards. That is why you should know the standard thicknesses for PCB material. Also, it is why you should know how to calculate the correct-sized board for your specific application.

What is Flexible PCB?

Flexible circuit boards are a great way to create flexible electronics, and we can use them in more ways than making them up of rigid PCBs. We can bend them into various shapes and form them into layers, which helps us use them in many different environments. Flexible PCBs are best suited for the kinds of applications that will always be under their power. A good example is a highly battery-powered sensor.

We can determine the flex PCB thickness by the desired size and type of circuit board. A very common choice for a PCB manufacturer is a 1.6mm-thick flexible PCB, which we also refer to it as an EEB (Extruded Etched Board) or single-sided PCB. These boards are shorter than the 1.8mm thick boards often used in other applications. Although thinner, they are also more expensive because of the thicker material. It makes them much longer and more challenging to manufacture.

Understand the bendability/flexibility of your flex PCB

The flex PCB you have chosen will significantly determine how you will use your product. One can determine the required flexibility based on the amount of movement your application will need to make and the restrictions.

Allowing your board to flex too much can lead to it bending or denting under pressure, which can cause problems over time. This is especially if it is in an environment with many fluctuations. To calculate the amount of bending you will need to allow, start by using this formula:

The formula is “bending deflection” times the “board thickness,” divided by the “radius of gyration.” This gives you a rough estimate of how much each part can bend before breaking. Here is an example of how to use it:

For 1/10-inch-thick boards, the maximum bending deflection would be 1/10 x 1/10 = .1 inches. If a board is .125 inches thick, you would have to multiply .1 x .125 to get a deflection of .0015625. The maximum amount the material can bend in any direction before it breaks.
Flexible Circuit Boards are a Different Species

Traditional rigid PCBs are for non-flexible applications. They comprise a special material that’s both stiff and strong, and one can create them in many different thicknesses.

Experts usually give the thickness of the material in units of ounces per square foot (oz/ft²), with the most common thickness being 1 oz/ft² or 32 oz/ft². (We should note that a few more recent rigid PCB models have an inscription of the numbers that translate to different thicknesses in decimal weight units. For example, 0.06 oz/ft² is 6 ounces per foot squared, but you really can’t use these units directly in our calculations.)

PCB Thickness Versus Layer Count

When choosing a PCB thickness for your application, we must consider how many layers of circuitry you are going to have on the board. It’s important to note that the thickness of each layer is material-dependent and based on how one will use the PCB will. While the thickness of each layer is a design consideration, it’s essential to understand that having thicker layers will typically allow for more applications on a board. Thus, we can pack more devices on a single PCB.

Ultimately, one calls out the thickness of each layer on a PCB in a particular standard called “ounce per square foot.” The most common number you’ll see is 1 oz/ft², and this will allow for nine metal layers on the board. (True, you can get more metal layers by using thinner material. However, that makes the board stiff, like a piece of plywood or MDF (medium-density fiberboard).

The standard thickness of two-layer PCB:

PCB boards come in various thicknesses. A standard two-layer board has a minimum thickness of 14 mils and a maximum of 32 mils. Each layer of the PCB has a minimum thickness and must maintain the total thickness established for the entire circuit board.

14 mil is the ideal substrate for most projects. We commonly refer to this as short-run PCB, and it is available from most electronic design houses in various sizes.

This thickness is well suited for many applications, such as audio circuits and PCBs that one will mount in an electric guitar.

A minimum of 10 mils of PCB will prevent warping problems when soldering boards in a tight space.

If you plan to use UV-curing, ten mils are your best bet, and you should order at least one extra layer of PCB. This will increase the overall thickness to 16-18 mil, allowing you to place UV circuits on opposite sides of your board.

14 mil is ideal for a small run of boards intended as prototypes or engineering samples. You may wish to explore using thinner substrates such as one oz-in these cases. You can purchase this in smaller quantities than 14 mils and provide a good balance between strength and cost. If a small quantity of boards is what you need, we recommend looking at our small quantity PCB buying guide.

The standard thickness of four-layer PCB:

When you need four-layer boards, you can choose a flex circuit thickness of 32 mils for your design. These come in various sizes and may be single or double-sided. The thickness of the board is dependent on how many layers you need to accomplish your design goals.

Maximum board thicknesses:

Thirty-two mils are the maximum thickness of a four-layer board. Keep in mind that this will typically have three solid layers plus one ground plane that you can etch away or mill off the assembled boards.

Thirty-two mils are a relatively thick substrate, but they can be appropriate for many applications. For example, we use printed circuit boards with four layers and 32 mils in various circuits. Some examples include audio amplifiers and electronics designed to withstand high temperatures.

For more information on using a board this thick, check out our guide to designing UV circuits.

Factors Affecting the Standard PCB Thickness

When choosing the right thickness for your specific project, consider several points. The thickness of the material and the substrate are two significant factors that will impact your final design decision.

Copper PCB thickness

For most electronics, an 8oz copper PCB is sufficient. The thickness of the copper board affects board appearance, cost, size, and flexibility of the PCB’s connections. Copper is the primary application of PCBs, so the copper thickness is essential.

A thicker copper PCB may be necessary for electronic devices that require extremely flexible connections. Thick copper PCBs usually do not restrict the electrical current, as thinner boards typically do. However, heavier boards can be expensive and take up too much space in a device.

Example: A 14 mil board with 8 oz copper is standard for most electronics.

Trace PCB thickness

Trace board thickness will influence the overall size of your device. Thicker traces will add the PCB area required for shielding and components. For devices that require very few traces, a thinner trace thickness may be an option. Experts recommend using at least a five-mil trace for most designs. Example: A 10 mil trace is typical for general-purpose PCBs.

Generally, one can require a larger diameter to use thicker copper, like a thicker copper wire. A device’s power ratings and critical components may limit the device’s size. If your electronic device requires very high current or critical components, you’ll want to choose a thick copper PCB. Look at your application and use this metric to inform your purchasing decisions.

Design factors

The thickness of the PCB that you choose should depend on the needs of your design. If you have a large project, you may wish to consider a thicker PCB or substrate so that your board is strong enough to stand up to damage. But if you have a small circuit project, you might prefer a thinner board that one can manufacture more quickly and cost-effectively.

Quality factors

When buying materials for your circuit board, there are several quality factors that you should consider. For example, is there any impurity in the material? Is it bio-degradable? Does it contain any harmful substances that could be harmful to our environment or the health of people who use your product?

Some examples of PCB materials include:

PCB Type Thickness (mil) Minimum Order Quantity Surface Treatment 1 Oz. 4 oz. Solder-free No 2 Oz. 6 oz. Solder-free No 4 Oz. 10 oz. Solder-free No 4oz (thin) 14 mil High temperature, high wear resistance Copper foil, silver overlay printed circuit board with black coatings

One of the most important factors to consider when purchasing PCB material is to choose the right substrate for your design. If you mount your circuit in an electrical device, such as an electronic guitar, you should use a thicker substrate at 1 or 2 oz.

Manufacturing factors

When you are ready to create the physical circuit board, you will need to order the appropriate PCB material. One can do this through several methods. They include sending your design out to a manufacturer or purchasing materials from a local store. 

A company specializing in circuit manufacturing will have professional engineers and technicians to assist you with your design. They generally help from creating the schematic diagram to creating specifications for your circuit board. When selecting your material, you should use those specifications as guidelines for ordering the right PCB thickness for your design. RayMing PCB and Assembly is one of the leading flex PCB China producers that satisfy all manufacturing factors.

Choosing the Correct Thickness for Flex PCB Prototype

The size of your prototype determines the thickness of the PCB and any design considerations that you have for your electronics. When experimenting with a prototype, remember that flexibility is excellent for creating prototypes. However, flexibility also costs money. If you need to experiment with different flex board PCB thicknesses to see which one performs best for your specific application, you can use a board thickness calculator like this one to help figure out what size board you’ll need.

Board weight

The thickness of flex printed circuit materials influences the overall weight of the board. A thinner material may be cheaper, but it’s also lighter, affecting some assemblies. Thicker material will be heavier, but it’s going to be stiffer. This may affect the electrical characteristics of the board at times (especially as the board gets hot).

Heat sink

We use heat sinks to dissipate heat away from electronic circuit boards while functioning. One can make heat sinks from any material. However, they must have a high heat transfer coefficient. Additionally, they have low thermal resistance to ensure heat transfer. This method transfers heat away from the circuit location.

We use a heat sink to dissipate heat, but it must have low thermal resistance and heat transfer coefficient. A thicker PCB will be able to dissipate more heat and thus be able to handle higher temperatures.

Cost

The final flex PCB price of a board will depend on the cost of the materials used in making it. The more layers you want on your PCB, the thicker each layer will need to be, which will drive up the price per square foot.

Power

A PCB that’s too thick will require more power to keep the circuit running and may need to get power from a different source. For example, having a board with six conductors will require two or more traces. This means that the power supply can work harder to generate the required current for all the circuit’s components.

Reliability

Choosing a thinner material can create a more flexible board and withstand bending and pounding during use. However, that adds weight and thus adds cost to the board.

Making Floating Board with Flexible Substrate

A flexible substrate makes up a flexible PCB and allows the board to bend without fracturing or breaking. Before a few years ago, making a flexible PCB was not an option because of the amount of strain one needs to put on the boards during bending. Layers that were too thin could have cracked from even a slight bend or swing.

Footprint size

If your design uses microcontrollers or chips with a tiny footprint, you might have difficulty making it fit on a thick PCB. If you’re working with smaller components, you might need to increase the thickness of your PCB to accommodate the larger parts on it.

Electrical performance

It is also important to note that a PCB that’s too thick may affect the electrical performance of the board. This can happen if the traces on the board are too close together. It can also happen if there is not enough room between traces to ensure that they don’t affect each other with capacitance or inductance. A thin board will be more likely to allow good connectivity between traces and components. However, it will not support as many parts as a thicker one.

Flexibility

The most flexible PCBs are less than 1 oz/ft². The thicker the board is, the less flexible it will be, but the more it will support and allow for a wider range of functions and devices to go on it. The standard thickness for flat flex PCB material is between 0.3-0.45 oz/ft². Also, while they may not be as flexible as ultra-thin PCB material, they can still withstand bending without fracturing or breaking.

Benefits of flex PCB

The major benefit of a flex PCB is that one can bend and use it in applications where rigid PCBs are not useful. Many applications that require a board to be movable, flexible, and even curved can use a flex PCB while rigid boards cannot. Because of their flexibility, we can use a flex board PCB in many different applications and industries. On the other hand, we can use rigid boards generally limited to the electronics industry. Flex PCBs are beneficial for these industries because they allow for tight spaces and movements that rigid boards cannot.

Flexible Circuits

This is a material and circuit design technique to make circuits that can bend or curve when needed or needed. Flex circuits comprise a flexible substrate and conductive or semiconductive material or array. Typically, flex circuit boards will have a substrate that can bend easily. However, it is still strong enough to support other components like resistors or capacitors. By changing the thickness of the flexible substrate and using different layers for different circuit designs, we can make various flex circuits. In addition, manufacturers make flex printed circuits more durable from heavier materials and strong enough. This enables them to support other components like those mentioned above.

Reduced Space and Weight

A significant benefit of using a flex printed circuit board is that they can be thinner while making up the same space as rigid PCBs. This can be a helpful feature when you need to pack more circuits into tighter spaces, and low-cost, rigid PCBs are impossible. Another benefit of using a flexible circuit board is that it can truly move with the fingers on the hand rather than twist and turn components and wires to make it move as rigid boards do.

Increased usability

This is a significant benefit of flex PCBs because it allows for the creation of user-friendly PCBs. It creates PCBs that have more space available for soldering and easy access to all the components on the board. This can lead to fewer errors in soldering and less frustration for the user. It can also save time by allowing for easier movement and better solder connections.

Higher Density

Flex PCBs are generally easier to work with than rigid PCBs. one can also lay them down closer together without diminishing quality or performance. This higher density allows for one to put more components on a board. In addition, as mentioned previously, the thinner nature of flex PCBs allows for the use of more components in one design.

Durable Flex printed circuit board

The flexibility and durability of the flexible substrate make it very useful in situations where a rigid PCB would be prone to break. For example, storing these boards in a backpack or purse can cause damage to rigid PCBs that cannot withstand pressure as flex boards do. Also, flex circuits can survive harsh weather conditions where rigid PCBs easily become potholes and break from the elements.

Bending Applications

We use flex circuits for many different applications. This is because of their ability to bend and move easily without damaging or fracturing. It is essential in mobile applications where one would damage components by bending rigid boards but still need to move with the user.

Monitors

We use flex circuits to make displays that can bend easily and move with the body to make them very thin while still supporting multiple layers of electronic components. This is great for smartphones, tablet computers, tablets, and televisions.

Smartphone and Tablet Computers

We use flex circuits in smartphones, tablets, and other mobile devices. It allows for easy bending and moving of components without breaking. This is very useful for people who use their phones or tablets as navigational tools. If a user needs to change the settings on their phone, they can bend it around a cup or other object. It helps avoid using screws or clips that would damage their device.

Ultrasound

We can use flex circuits as an alternative to rigid PCBs in ultrasonic equipment. The thin nature of flex circuits allows for more sensitive transmitters and receivers.

Ultrasonic Transmitters

As mentioned previously, ultrasonic transmitters are very thin but can still handle the high-frequency vibrations needed for ultrasonic equipment. Flex circuit boards allow for the creation of transmitters that we can easily place where they need to go while still being thin and flexible.

Ultrasonic Receivers

We use flex circuits to make the transmitters more sensitive. Due to this high sensitivity, we can stack flex circuits together to create extremely small ultrasonic receivers. They can help detect even the smallest vibrations.

Car Electronics

We use flex circuit boards in cars to adjustable mirrors and other easily movable components. This is perfect for drivers who need to mount their phones or other devices while driving.

Conclusion

Flex PCBs are an often-overlooked option in the world of electronics. The thickness of a PCB is crucial. This is because it determines how many layers of circuitry we can pack onto the material and how long-lasting the board will be. Because of this, you must stay on top of the thicknesses of your board and know what thickness to use for your needs. You may also want to consider using flexible circuit boards in some cases, such as environmental sensors that are always under power and will rarely ever see any direct sunlight or harsh elements.

You can hardly do without some form of tech in this highly technological world. Take, for instance, your smartphone; it rules most aspects of life, considering the myriad of vital apps you can access through it. Moreover, devices like smartphones, computer keyboards, etc., rely on flexible circuit boards for proper function.

To satisfy the high demand for flexible printed circuits, flexible printed circuit board manufacturers must play their role effectively. Predictably, the high number of flex circuit board manufacturers globally can make it difficult for you to choose the right partner for your flex PCB manufacturing needs.

But since it is of the essence to get the right partner for your flex PCB manufacturing needs, you must understand how to go about it. Additionally, it helps to know the top 10 flexible printed circuit board manufacturers globally. So please read on to get it right when you are looking for your next flex circuit manufacturer.

How to Pick a Suitable Flex PCB Manufacturer

Flex circuits, despite some history, have become popular in recent times. Flex PCBs have a complicated manufacturing process compared to conventional rigid circuit boards. It arises because of their intricate nature. You, therefore, need to get the ideal manufacturer possessing the right manufacturing equipment, highly skilled staff, the correct processes (including quality assurance and testing), an acceptable industry pedigree, etc., to get it right. The high number of manufacturers also complicates your selection process further. But as always, you can always navigate this minefield if you consider the following.

Considerations

Do they Possess the Correct Flex PCB Fabrication Equipment?

If you want to identify the correct manufacturing partner for your flex PCB, check whether they have the latest equipment and technologies. Such a capacity helps in producing high-quality flexible PCBs for your needs. Most reliable flex PCB makers endeavor to maintain quality and enhance efficiency. As a result, such companies invest in their production facilities. Check for drilling tools, place board testers, surface finishing tools, imaging equipment, etc.

Standards and Certifications

The ideal flex circuit manufacturer will comply with ISO, UL, and IPC regulations. Therefore, it becomes prudent to check for compliance with the relevant certification and standards for potential manufacturing partners. An example of accreditation to look out for includes the UL 94V-O for fire-resistance conformance.

Do they Possess a Flex PCB Technician?

Flexible PCBs require advanced processes when it comes to their manufacturing. Further, plenty of steps get into the manufacturing process, and not every manufacturer qualifies in producing high-quality flex PCB.

Most reputable manufacturers have skilled technicians who can handle your flex PCB manufacturing needs. Therefore, if a potential manufacturer lacks such a group of skilled technicians, you had a better look elsewhere.

Quality of the Flex Circuit Company

Quality is significant when it comes to flex PCBs. Therefore, check and ascertain that your potential flex PCB partner produces high-quality flex circuits of the desired standards. The flex PCB products should have long-term durability, high-speed communication lines, high-density design, high conductivity, etc. Further, you can always resort to E-tests to ensure the quality of the flex PCB boards.

The Price of their Flex PCB

Design standards and quality often determine the production cost of flex PCBs. Additionally, some factors like base material or solder mask material can vary. Such factors can heavily weigh on your final product’s price or cost. Therefore, you must find a decent balance between cost and quality before placing your order. Therefore, do not pay or contract a manufacturer before considering this.

What is their Capability to Develop your Flex PCB (In-Line with your Desired Shape)

Flex PCBs have the uncanny ability to fit most applications. It, therefore, implies that it comes in diverse sizes and shapes. When it comes to your flex circuit manufacturing needs, your ideal partner must demonstrate the capacity to produce your desired form. For example, if you want a flexible PCB for military applications, you will need a flex circuit markedly different from a medical application. Most standup manufacturers will have the capacity to manufacture various forms and sizes of flex PCB for your use.

Flex PCB Testing

One vital step in the manufacturing process entails testing. For your Flex printed circuit, the company needs to have robust and updated techniques to ensure the integrity and functionality of the board upon deployment. A lack of elaborate testing can lead to mass failures of Flex PCBs. In testing the Flex printed circuit boards, the manufacturer identifies faults and corrects them early.

Capability to Supply Diverse Component Types

You can always get different flexible PCB designs from manufacturers. However, this primarily depends on your needs. It can entail multi-layer flex PCBs, double-sided flex PCBs, and single-sided flex circuits. But for a top-tier manufacturer, the type of flex PCB should never become an issue. The manufacturer needs to demonstrate the capacity to fabricate all the types based on your needs.

Proof of a Solid Model for Successful Production

Most reputable companies ensure the development and testing of a prototype before the mass production of a flex PCB. The cost of identifying an error later in post-production can prove grave and costly. As an engineer or designer, it can work best for you if you get a prototype from the company before production. In this manner, you can suggest and have them incorporate ideas.

Top 10 Flexible Circuit Board Manufacturers

If you want a top-quality flexible PCB, you may want to consider hiring a top-tier flex PCB manufacturer. But armed with the knowledge of the aspects to consider in picking a quality PCB manufacturer, it is time to narrow down and zero in on the ideal option. However, to save you from all the hustle, we have sampled the best ten FPC manufacturers all over the world.

#1. Unimicron

It is a famous and industry-setting flex PCB manufacturer. Unimicron also gets inferred to be a World-leading PCB Company. The company prides itself in guaranteeing you its commitment to delivering quality flex PCBs. You also get to enjoy the manufacturer’s extra focus on quickening the manufacturing process.

The manufacturer has its headquarters in Taiwan and a demonstrated history of 31 years since 1990. It possesses a global pedigree and provides world-class facilities, machinery, and workforce to serve its international clientele diligently. The company not only fabricates flexible PCBs but offers integrated circuit carriers, rigid-flex PCBs, HDI or high-density interconnections, testing, and burn-in services.

Features

• Multi-certified
• Multilocational with manufacturing sites in China, Taiwan, Japan, and Germany
• 30 years plus years of industry experience
• Deals with all PCB types, IC carriers (FCCSP, CSP, Memory Module, FCBGA), ELIC, high-density interconnector circuit board, etc.
• Efficient and quick turnover fabrication of flex PCBs regardless of the flexible PCB thickness

Service and Product Applications of the Manufacturer

• PCs or personal computers
• LCD (liquid crystal display) monitors
• Notebook computers
• Peripheral products
• PDAs or personal digital assistants
• Facsimile machines
• Scanners
• Smartphones or mobile phones, etc.

#2. RayMing PCB and Assembly

RayMing PCB & Assembly is an excellent option you can choose when it comes to your flexible printed circuit. The RayMing PCB and Assembly company, unlike other manufacturers, provide full turnkey services ranging from prototyping to assembly and packaging. Additionally, if you want a customization of your flex PCB, you can always rely on the company.

Features

• Multiple certifications on quality and other considerations, including UL and IPC certifications
• Multiple production sites around the world, with its headquarters in China
• Provide fabrication and assembly for both partial and full turnkey flexible printed circuits. The layer number of flex PCB includes 1-12 layers with diverse material choices and board thickness.
• Performs other PCB fabrication and assembly types, including rigid-flex PCBs and hardboard PCBs
• Collaborative approach in the manufacturing and assembly process of your flexible PCB board
• Over 15 years of industry experience when it comes to flex, rigid-flex, hardboard PCB fabrication, and assembly processes
• Highly skilled workforce, latest equipment, and modern technologies of manufacturing and assembly

Service and Product Application of the Manufacturer

• Assembly of Flex and other PCB types like rigid and rigid-flex printed circuit boards
• Full and partial turnkey flex PCB fabrication while also encompassing assembly for your printed circuit board design. Partial turnkey flex production entails providing the boards and some components for your flex PCB design. But beyond this point, the company carries out all the other activities to ensure a functional and efficient flex PCB product. On the other side, full turnkey will involve the company undertaking all the activities from procurement, design, testing, and quality monitoring of PCB production.
• IC programming
• SMT stencil
• Multilayer printed circuit board design
• Prototyping or low volume printed circuit board design
• PCB testing
• Heavy copper printed circuit board manufacturing
• Short-run assembly
• One-off circuit board design

 #3. DSBJ

DSBJ comes as a unique flex PCB manufacturer that understands the meaning of diversification into different sectors like AI. It is an important quality that acts as its main selling point. DSBJ has a long industry experience spanning over 40 years since 1980, when it started as a small stamping and sheet metal factory. It then morphed into Suzhou Dong Shan Ban Jin company eight years later. As they say, everything from this point onwards is history.

The company has continued evolving over the last few years through consistent innovations and concepts in designing, manufacturing, and prototype PCBs. The realization of this can also get credited to meaningful collaborations and the acquisition of some franchises and companies. In addition, it helped expand DSBJ’s manufacturing services in diverse areas of the globe. For instance, the acquisition of Multek in 2018 expanded the scope of manufacturing in terms of global geographical locations.

Features

• Over 40 years of industry experience in PCB and other electronic product and service provision
• Has production factories in over 15 countries
• Deals in diverse electronic product manufacturing, including flex and rigid board fabrication and assembly, though specialization features telecommunication equipment, metal precision, interconnect solutions, and LED technologies.
• Flexible approach and receptivity to current ideas and innovation remain relevant now and in the future.
• Sensitive to corporate social responsibility and thus involved in environmental and safety responsibility. It has also invested in academic collaboration as part of its innovation and social corporate responsibility programs.
• Multi-certified in the production of diverse types of printed circuit boards (including flex PCBs)

Service and Product Applications of the Manufacturer

• A diverse range of PCB types includes Flex printed circuit boards, rigid printed circuit boards, and rigid-flex circuit boards.
• Air gap construction
• Stiffeners
• Cover lays
• Low-cost FPC systems
• Intermediate component density through the traditional plated through-hole and micro-via interconnect.
• An extensive range of full PCB or printed circuit board assembly services includes final box build and FPCA/PCBA circuit board services.

#4. Tripod Technology

The Taiwan-based company comes as a reputable flex PCB manufacturer specializing in designing, fabrication, and assembly of rigid printed circuit boards. It is equipped with world-class manufacturing processes that ensure high-quality PCBs.

Tripod Technology deals in other electronic back-end equipment products despite primarily indulging in PCB development and manufacture. It includes a topping machine, test handler, target hole drilling, etc. It prides itself on sustainable environmental protection, especially in the production process. You will find its business model unique as it is developed around R&D (research and development). Such a strategy propels it above competitors in global PCB manufacturing, which is a notch higher.

Features

• Over 15 years of industry experience, primarily in the semiconductor sector
• The company has multiple certifications, including ISO 9001:2015, IECQ QC 080000:2012, IATF 1649:2016, TL9000-H R6.2/R5.7, etc. In addition, the company also conforms to ISO 45001, ISO 27001:2013, and ISO 14000.
• The company offers multiple services, including the fabrication and assembly of rigid-flex PCBs.
• Global manufacturing with multiple fabrication stations in China, thus guaranteeing better overall prices for flex PCB products.
• The company also models its business on environmental sustainability.

Service and Product Application of the Manufacturer

• TFT-LCD is also a thin film transistor liquid crystal display that provides quality imagery. It comes as large, small, NB, tablet, and DT.
• Memory products by usage include DDR, Flash PCB, and SSD-client
• HDD, mostly used in computer or PC hard disks. It comes in 2.5 and 3.5 options
• Buried inductor
• Multilayer board
• Semi-flexible boards
• Mixed pressure, etc.

#6. Zhen Ding Tech

The company has a remarkable reputation for manufacturing incredible and quality flex printed circuits. Zhen Ding Tech believes in investing in more materials to better facilitate Flex and other PCB design types. In addition, it combines the IoT (Internet of Things), Internet of Vehicles, AI, and 5G technology to offer several customized solutions.

You get to enjoy simplifying their printed circuit board fabrication or manufacturing process into vital aspects. The first step entails the design phase before further research through the R&D department. After this, the Flex or other PCB type gets manufactured before delivery for your use.

Features

• The company puts a premium on the innovation and efficiency of diverse PCBs.
• Combines different technologies in delivering quality flex PCBs, HDI (high-density interconnection), and ICS or integrated circuit substrates
• Manufactures and supplies multiple PCB products
• Provides PCB manufacturing services for diverse application areas
• It uses advanced technology to thin, manufacture, and automate the fabrication of PCB products for diverse applications.
• Located in Taiwan with an industry experience of over 15 years
• Different manufacturing sites with expert staff, latest technology, and modern equipment.
• The company models its business around rationalization, efficiency, unmanned and computerized production.
• Multiple quality certifications to guarantee the quality of products and processes

Service and Product Application of the Manufacturer

• Fabrication and assembly of Flex, rigid-flex, and rigid printed circuit boards
• Various application areas include automobiles/vehicles, NetCom, wearable devices, and cell phones. It also applies to consumer electronics and computer information.
• Excellent customer care service for all your inquiries besides manufacturing, packaging, and delivery of PCB products

#7. Kinwong

The company has a distinct collaborative approach to developing or manufacturing flex circuit boards for you. Kinwong comes as one of those manufacturers that will not rest until your PCB needs to get met. Further, it prides itself on excellent craft with attention to your design to provide a true-to-type or improved version of your expectations.

Kinwong has five production sites in China with over 11 factories. It is certified and provides quality PCB products and services.

Features 

• Design, fabricate and assemble conventional and modern printed circuit board types. It also deals in the research and development of PCBs.
• Adheres to industry quality assurance measures and certifications to ensure high reproducibility and quality
• Committed to making your design requirements of lighter, thinner, and smatter flex PCBs a reality
• Targets and serves diverse application areas, including the medical and industrial sector, consumer electronics, telecommunications, etc.
• Multiple factories are equipped with expert technicians, modern machines, and innovative technologies to serve your Flex and other PCB-type needs.
• Over 28 years of industry experience with over 14000 staff world-over
• Concentrates on client or customer demands in terms of innovation besides encouraging product upgrade

Service and Product Application of the Manufacturer

• Research and development, fabrication, and delivery of PCB products and top-tier electronic materials
• Products include Flex printed circuits, conventional PCBs, rigid-flex PCBs, HDI PCB, copper inlay, RF PCB, etc.

#8. Shennan Circuits

If you have not encountered the bizarre, this company will shock you slightly. It is not your standard PCB order and manufacturing company, but one that specializes in designing and evolving new PCB design trends to fruition. Shennan Circuits got incepted in 1984 and have over 37 years of experience in the field. It is global, with production sites in China and North America. It also has R&D sites located in Europe as an integral aspect of its commitment to manufacturing.

Features

• Over three decades of industry experience designing, innovating, and manufacturing diverse types of PCBs.
• Multiple manufacturing and R&D locations in China and North America besides Europe, respectively
• Focuses on innovation, research, and development, besides manufacturing of Flex and other PCB types
• Diverse approaches in providing world-class electronic circuit solutions and technology include a 3-in-1 PCB design process encompassing design, substrate packaging, and assembly. The approach can also involve a full PCB value chain, including scheme design, micro-assembly, PCB testing, manufacturing, etc.

Service and Product Application of the Manufacturer

• Design, innovation, and manufacturing of diverse PCB types
• PCB testing

#9. Suntak PCB

If you have a large flex PCB order, then Suntak PCB can prove the ideal solutions partner for you. The company has a demonstrated history and pedigree of manufacturing PCBs since 1995. Coupled with a skilled staff of over 4500 and a 3 million sq. m factory space, you will hardly get disappointed. What is more? The company commits to providing high-caliber PCBs to its clients or customers.

Features

• Large factory space measuring 3 million sq. m
• A skilled staff of over 4500 to cater to your Flex and other PCB type needs
• Mostly targets electronic manufacturers and information sectors, though caters for other sectors as well.

Service and Product Application of the Manufacturer

• Application areas include industrial control, communications, medical, and automotive electronics.
• Services offered include prototyping, high-volume production, and assembly of diverse PCBs.

#10. China Fast Print

The company is an industry leader when it comes to PCB technology innovation. The belief entails using the correct technology whenever the desire encompasses getting more opportunities in the industry. Because of this, the manufacturer prides on this mantra for the two decades it has existed. Further, customer satisfaction ranks highly, thus their commitment to ensuring quality PCB service delivery.

Features

• Research and development, manufacturing, and collaboration prove critical for the company’s business model.
• Targets and supplies diverse industries, including telecommunications, automotive electronics, rail transit, medical electronics, semiconductors, industrial control, and computers, besides other peripherals

Why do we have a lot of Flexible PCB China Manufacturers?

China has emerged as a global powerhouse when it comes to PCB manufacturing. Additionally, the labor is highly skilled and cheap compared to North American and European companies. As a result, the quality of PCBs by Chinese manufacturers proves high and with lower costs which rank them highly.

Final Thoughts

If you want a quality flexible PCB, finding the correct flexible printed circuit board manufacturer becomes of the essence. It thus becomes prudent to understand the aspects discussed to pick the best-suited manufacturer for your flex PCB needs. But starting your discrimination with the highlighted flex PCB manufacturers will make it easier for you, would it not? Best of luck.