Introduction

The Xilinx XC7Z045-2FFG900i is a mid-range FPGA (Field Programmable Gate Array) belonging to the Artix-7 generation. With its combination of logic capacity, features and cost-effectiveness, the XC7Z045 FPGA is well suited for applications in communications, industrial, automotive, aerospace and consumer market segments. This article provides an overview of the XC7Z045 architecture, characteristics, design tools and target applications.

FPGA Overview

FPGAs are semiconductor devices containing programmable logic components and interconnects that can be configured to implement custom hardware functions. Key characteristics include:

• Configurable logic blocks (CLBs) to implement digital logic
• Flexible interconnects for wiring logic blocks
• High-speed I/O for interfacing to electronics
• SRAM-based configuration loaded from external memory
• In-field reprogrammability enabling design revisions

Unlike ASICs, the functionality of FPGAs can be changed as needed by reconfiguring their internal fabric. This makes them suitable for prototyping and flexible designs.

XC7Z045-2FFG900i FPGA Overview

The Xilinx XC7Z045-2FFG900i device has the following key features:

• Part of the mid-range Artix-7 family
• Manufactured using a 28 nm process technology
• Package: 900-pin FineLine BGA (FFG900)
• 43,660 logic cells, each with a 6-input LUT
• 14,400 Kb of fast block RAM
• 240 DSP slices with 25 x 18 multipliers
• Six clock management tiles (CMTs)
• Eight mixed-mode clock managers (MMCMs)
• High speed I/O supports 6.6 Gbps
• Multi-voltage operation from 1.0V to 1.8V

With these specs, the XC7Z045 provides an optimal balance of capacity, performance, power efficiency and cost for medium complexity designs.

Internal Architecture

The XC7Z045 FPGA is organized as follows:

Simplified overview of Xilinx 7 series FPGA architecture (Image source: Xilinx)

Configurable Logic Blocks

The core FPGA fabric consists of an array of Configurable Logic Blocks (CLBs). Each CLB contains:

• 8 LUTs for implementing logic functions of up to 6 inputs
• 16 flip-flops for registering logic
• Arithmetic carry logic

Block RAM

Distributed 36Kb RAM blocks provide memory storage directly within the FPGA fabric. Total 14,400 Kb RAM in the XC7Z045.

DSP Slices

Dedicated DSP slices allow arithmetic operations like multiply-accumulate to be implemented without occupying general logic resources.

Clock Management

Six CMTs and eight MMCMs provide clock management features like frequency synthesis, deskew, and jitter filtering.

I/O Blocks

The periphery I/O blocks contain serializers/deserializers and digitally controlled impedance that support high-speed interfacing up to 6.6 Gbps.

Development Tools and Kits

Xilinx provides the following software tools and hardware platforms for developing the XC7Z045 FPGA:

Design Software

• Vivado Design Suite – For synthesis, placement, routing, analysis and optimization
• SDK – Software development kit for embedded processor designs
• System Generator – DSP design tool with MATLAB/Simulink integration
• High Level Synthesis – Converts C/C++/SystemC to RTL code

Evaluation Kits

• KC705 board – Features XC7K325T FPGA and peripherals for general purpose development
• VC707 board – Virtex-7 FPGA board also usable for Artix-7 designs
• MicroZed – Zynq SoC board with Artix-7 grade FPGA fabric

Leveraging these xilinx tools and boards accelerates time-to-market with the XC7Z045 FPGA.

Example Applications

Some example application areas where the XC7Z045 FPGA offers a good fit:

Wireless Communications – Software defined radios, baseband processing, FIR filters.

Automotive – ADAS systems, vision processing, vehicle networks.

Industrial – Motor drives, PLCs, HMIs, I/O expansion.

Image Processing – Video surveillance, medical imaging, machine vision.

IoT and Edge Computing – Algorithm acceleration for edge analytics.

Aerospace and Defense – Mission computers, navigation, guidance systems.

Test and Measurement – High-speed data acquisition, ATE interfaces.

The logic capacity, DSP blocks and serial I/O make the XC7Z045 suitable for these medium complexity applications.

Comparison with Other FPGAs

The XC7Z045 sits between the low-cost Artix-7 FPGAs and higher performance Kintex-7 family in Xilinx’s 7 series lineup. Key comparisons:

FPGA	Key Characteristics
Xilinx Artix-7	Lower logic density and performance than XC7Z045
Xilinx Kintex-7	Larger FPGA with higher bandwidth transceivers
Intel Arria 10	Comparable mid-range FPGA density and features
Lattice ECP5	Lower cost FPGA, smaller logic capacity

Conclusion

The Xilinx XC7Z045-2FFG900i FPGA offers an optimized combination of density, power efficiency and cost suitable for mid-volume and mid-complexity applications. The Artix-7 architecture balances features like block RAM, DSP slices, and 6.6Gbps I/O in a configuration well suited for workloads including wireless, image processing, automation, automotive and aerospace applications. With the available Xilinx development tools and boards, the XC7Z045 enables accelerated deployment of custom FPGA-based designs.

FAQs

What are the key differences between the Artix-7 and Kintex-7 FPGA families?

The higher-tier Kintex-7 family provides greater logic density, higher performance transceivers, and more hardened IP cores compared to mid-range Artix-7 FPGAs.

What printed circuit board packages are available for the XC7Z045 FPGA?

The XC7Z045 is manufactured in BGA, CSG, FFG and FBGA packages with pin counts ranging from 324 to 900 pins. Both Pb-free and non-Pb-free balls are supported.

What is the typical power consumption of the XC7Z045 FPGA?

Typical power consumption depends on utilization but ranges from 1 to 5 watts. The 28nm process enables low static power of the Artix-7 family.

What embedded peripherals are featured in the XC7Z045 device?

Hard blocks in the XC7Z045 include DSP slices, block RAMs, MMCMs, PLLs, transceivers, integrated Endpoint PCIe blocks and double data rate memory interfaces.

What printed circuit board design is recommended when using the XC7Z045 FPGA?

PCB guidelines include proper decoupling, controlled impedance traces for I/O, minimizing noise, sufficient ground plane capacity and thermal management of the BGA package.

Xilinx XC7Z045-2FFG900i In Stock

The Xilinx XC7Z045-2FFG900i is an IC available in -1, -2LI, -2, -1LQ, and -3 grades of speed. The highest possible performance is achieved through -3 grade. The -2LI grade IC is operating on programmable logic of V_CCINT/V_CCBRAM equal to 0.95V. This IC is separated for lower maximum static power. However, the specification of speed for -2LI devices is the same as that for -2 grade IC. Both devices are utilized for lower power. The AC and DC characteristics of the device have been specified through expanded temperature ranges, industrial, and commercial extended ranges. Apart from the range of temperature for its operation, all of the AC and DC parameters are the same for all speed grades of the device. But, specific speed grade devices are available for industrial temperature ranges, extended and commercial applications. All of the temperatures at the junction point and supply voltage specifications are illustrating the worst-case conditions.

DC Characteristics of Xilinx XC7Z045-2FFG900i

If any stress is applied beyond the absolute maximum ratings may result in permanent damage to the device. The exposure of the device to the absolute maximum rating for a longer period of time will result in the inefficient performance of the device and result in irreversible damage. Therefore, the device must be operated under given conditions for getting better efficiency.

Conditions of Operation

The entire voltage range of Xilinx XC7Z045-2FFG900i is relative to a ground position. Both PS and PL are also common to GND. The core of the processor is operating at 1GHz. The DDR interface is operating at 1333 megabits per second. Whereas the minimum V_CCPINT is at 0.97V and the maximum V_CCPINT is at 1.03V. It must be noted that V_CCBRAM and V_CCINT should have a connection to the same point of power supply. The data of configuration is retained even in cases if the V_CCO has dropped to 0V. The device is catering VCCO of 3.3V, 2.5V, 1.8V, 1.5V, 1.35V, and 1.2V at ±5%. The current ratings for PL and PS must not exceed beyond 200mA. For the use of encryption of bitstream, V_CCBATT is required. In case if there is not battery utilization, then it should be connected to V_CCAUX or GND. For the device, to operate in lower power consuming state, its VMGTAVCC must be 1.0V ±3% throughout the entire range of CPLL frequency.  

Quiescent Current

The typical values of Xilinx XC7Z045-2FFG900i are given at a certain nominal voltage at a junction temperature of 85^oC along with single-ended resources of SELECTIO. Distinct values for devices that are blank configured having no output load currents, there is no need for active pull-up resistors at the input. Furthermore, all of the input/output pins are in floating and 3-state. Xilinx power estimator tools are utilized for the estimation of static consumption of power for all conditions that are not specified.

PS Power Sequencing

For PS, the sequence which is recommended for powering ON Xilinx XC7Z045-2FFG900i is V_CCPINT followed by V_CCPAUX and then V_CCPPLL. After that V_CCO of PS power is supplied for achieving minimal current drawing and ensuring the input/output at 3 states when POWERON. The input at PS_POR_B is necessitated for insertion to GND while powering ON sequence is proceeded till V_CCPINT, V_{CC_MIO0}, V_CCPAUX reaches to the minimal level of operation for ensuring eFUSE of PS integrity. The power-off sequence that is recommended for Xilinx XC7Z045-2FFG900i is in reverse to that required for powering ON the device. Now, in case if both supplied i.e., V_CCPLL and V_CCPAUX are having exactly the same voltage levels that are recommended, then both of these could be given power through the same supply and will be able to ramp simultaneously. Xilinx is recommending powering ON both V_CCPLL and V_CCPAUX with the same power supply keeping an option of ferrite bead filter. Any of the conditions mentioned must be fulfilled at powering OFF stage before the V_CCPINT is reaching to 0.80V such as the input of PS_POR_B inserts to GND, input to PS_CLK reference clock is disabled, and V_CCPAUX is lesser than 0.70V. These conditions are must to be maintained for ensuring the integrity of eFUSE till VCCPINT has reached the value of 0.40V. The voltage difference in between V_CCPAUX and V_{CC_MIO1} should not exceed beyond 2.625V for every cycle of powering the device ON and OFF for maintenance of its reliability.

PL Power Sequencing

For Xilinx XC7Z045-2FFG900i the powering ON sequence for PL is to start from V_CCINT followed by V_CCBRAM then V_CCAUX, V_{CCAUX_IO}, ending at V_CCO for achieving minimal current drawing to make sure that its inputs/outputs are in 3-state powered ON. Whereas, it is recommended powering OFF sequence is exactly opposite to power ON. When V_CCBRAM and V_CCINT are having the same level of voltages then both may be provided with the same power supply at the same time. When V_CCO, V_CCAUX, and V_{CCAUX_IO} are having the same level of voltages that are recommended then these can be ramped and given the same supply simultaneously. The difference of voltage in between V_CCAUX and V_CCO should not exceed beyond 2.625V for every powering ON and OFF cycle for maintenance of reliability of Xilinx XC7Z045-2FFG900i. For achieving minimal drawl of current during power ON sequence for transceivers GTX then V_CCINT should be initialized first, followed by V_MGTAVCC, then V_CCINT, and V_MGTAVTT. In case, if these sequences are not maintained then a higher current may be drawn during the cycle of power ON and OFF.

AC Switching Characteristics

The AC switching characteristics of Xilinx XC7Z045-2FFG900i are specified according to the speed grade of the device. The switching characteristics may be divided into categories such as production, preliminary, and advance. The advanced specifications are grounded on the simulations only and are available whenever the device specification for design is frozen. The speed grades of the device designations are assumed stable, but still certain underreporting is reported.

Testing of AC Switching Characteristics

The internal parameters of timing for Xilinx XC7Z045-2FFG900i have been derived through the measurement of internal patterns after testing. The AC switching characteristics are representing the worst possible case for junction temperature and supply voltages. Specifically, precise and worst-case data utilization of values is reported through an analyzer of static timing that back annotate the netlist of simulation.