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Your Guide to Getting the STM32F427VIT6 32-Bit Microcontroller

STM32F427VIT6 is a 32-bit single-core Microcontroller (MCU). It is designed for the low-power applications.  This MCU is also used with a variety of applications or devices, such as home audio appliances, motor drive and application control devices and alarm systems.

In this article, we cover the STM32F427VIT6 extensively, talking about the function of its 32-bit core processor and every other thing in-between.

STM32F427VIT6 is a User-Centric MCU

Microcontrollers are those semiconductor devices used for enabling user-based configuration of the logic elements. It is therefore, not a surprise that the STM32F427VIT6 inherits the same characteristic, as it is a fully user-programmable MCU.

That is why you can optimize it for a wide range of applications, ranging from alarm systems, printers, medical equipment, scanners and HVAC systems.

Another aspect of STM32F427VIT6’s user-programmability is the compatibility with the STM32F2xx devices – which is the family of Microcontrollers (MCUs) from where it came from.

We also want to point out that STM32F427VIT6’s functionality is largely buoyed by the 32-bit single-core Microcontroller (MCU) architecture.

According to the manufacturer, this core is derived from the wider Arm Cortex-M4 CPU, which comes with a combination of Floating Point Unit (FPU), and an Adaptive Real-Time Accelerator (ART).

From the above, one can say that the STM32F427VIT6, besides being fully user-programmable, it also designed to facilitate the MCU’s functions.

The 32-Bit Architecture


One would think that the 32-Bit single-core on the STM32F427VIT6 is the only point where a 32-bit would be used on this MCU.

Interestingly, this type of bit is also used in a number of other places. For example, there is a 32-bit RISC processor attached to the Arm Cortex, from where STM32F427VIT6 is able to deliver the highest levels of performances expected of a Microcontroller (MCU) powered by this type of processor.

There is also a 32-bit data word that serves as the “derivative point” for the Cyclic Redundancy Check (CRC).

For emphasis, the CRC is a protective feature on STM32F427VIT6, which is designed to verify the transmission and storage of data on this Microcontroller (MCU).

The calculation unit needed by the CRC to do that is to be derived from both a fixed generator polynomial and the 32-bit data word.

The Multi-AHB Bus Matrix

The 32-bit architecture is also deployed for use with the Multi-AHB Bus Matrix. The function or role here is to be the “interconnector” that combines all the major peripherals (masters), such as the USB HS, CPU, DMA2D, DMAs, LCD-TFT, and Ethernet.

The interconnection made here is designed to help both the aforementioned master (peripherals) and the slave (peripherals) to be connected. Examples of the slaves connected to the masters are:

  • APB
  • Flash Memory
  • AHB
  • RAM
  • FMC

The interconnection made via the Multi-AHB Bus Matrix allows for the aforementioned peripherals (both the masters and the slaves) to be optimized for the highest levels of speedy functions.

Robust Application Security

It wouldn’t be worth it if the Microcontroller (MCU) doesn’t “speed things up.” For that reason, STM32F427VIT6 has been optimized to offer the highest performance levels, such as the protection of the target applications.

A combination of the Memory Protection Unit (MPU) and the full set of DSP instructions are required to further enhance the target applications’ security.

STM32F427VIT6 is Designed for the Latest Embedded Applications

Newer technologies and operating modules are rolled out as the days go by. When it comes to MCUs, the configuration processes and techniques have to be top-notch to assure of the devices’ capabilities.

The basis of the STM32F427VIT6 on the Arm Cortex-M4 core processor with the Floating Point Unit (FPU) is a major step to that end. The combined function of the processor and the FPU allows for the real-time application and or implementation of all that the STM32F427VIT6 MCU has to offer.

Besides, this dual architecture is also responsible for STM32F427VIT6’s capability to provide a low-cost MCU development platform, cut down on design iterations through the advanced response to interrupts and offer an improved computational performance.

STM32F427VIT6 also boasts of one of the lowest-cost Microcontroller (MCU) architectures because of the dramatic reduction of the pins and the overall reduction of excessive power/current usage.

Program Memory

Different memory types are used to program a Microcontroller (MCU). The choice has to do with the target applications, the extent of the applications and the data reading mode.

STM32F427VIT6 packs a punch of those with the integration of the Flash program memory type. Flash is a type of non-volatile memory used in most semiconductor devices. The Flash memory offers data reprogramming and erasing.

On the STM32F427VIT6, it offers much more than that – it can also be embedded to the device. The embeddable nature of the Flash program memory allows for the storage of both programs and data/wireless information.

Interestingly, the Flash memory, despite the non-volatility, also offers fast data processing, up to 2 Megabytes per second (Mbps).

STM32F427VIT6 Uses DMA for Memory Management

The Flash program memory allows for fast data transfer, but much more can be done to that end. STM32F427VIT6 uses the DMA Controller (DMA) to achieve a more stable and facilitated data transfer process.

The core attributes of the DMA’s functions to the STM32F427VIT6 include:

  • Dual configuration by software and the hardware connected to the DMA Controller to handle the DMA requests.
  • The support of two general-purpose dual-ports DMA on the STM32F427VIT6. The DMA1 and the DMA2 helps the MCU to manage different memory functions by leveraging the 8 streams attached to each of the DMAs. It is therefore, through this connection that STM32F427VIT6 can handle the memory-to-peripheral, memory-to-memory and peripheral-to-memory data-induced transfers, almost at the same time.

Conclusion: STM32F427VIT6 Achieves a Balanced Performance Via the ART Architecture

STM32F427VIT6’s Adaptive Real-Time Accelerator (ART) is a concise architecture for scaling this Microcontroller (MCU)’s functions.

It functions or works by optimizing its memory accelerator to align with STM32F427VIT6’s Art Cortex Floating Point Unit (FPU)’s processors.

The optimization made here sees to the dual function of the two to achieve an increased program execution speed, from the 128-bit Flash memory.