Part Number: STM32F429IIT6

Manufacturer: STMicroelectronics

Description: IC MCU 32BIT 2MB FLASH 176LQFP

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of STM32F429IIT6

Datasheet  STM32F429IIT6 datasheet
Category Integrated Circuits (ICs)
Family Embedded – Microcontrollers
Manufacturer STMicroelectronics
Series STM32 F4
Packaging Tray
Part Status Active
Core Processor ARM? Cortex?-M4
Core Size 32-Bit
Speed 180MHz
Peripherals Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
Number of I/O 140
Program Memory Size 2MB (2M x 8)
Program Memory Type FLASH
RAM Size 256K x 8
Voltage – Supply (Vcc/Vdd) 1.8 V ~ 3.6 V
Data Converters A/D 24x12b, D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Package / Case 176-LQFP
Supplier Device Package 176-LQFP (24×24)

STM32F429IIT6 Description

The high-performance Arm® Cortex®-M4 32-bit RISC processor running at up to 180 MHz is the foundation for the STM32F427xx and STM32F429xx devices. All Arm® single-precision data processing instructions and data types are supported by the Floating-point unit (FPU) single precision in the Cortex-M4 core. It also has a memory protection unit (MPU) to keep your apps safe and complete digital signal processor (DSP) instructions.

High-speed embedded memories (up to 2 MByte of Flash memory, up to 256 KBytes of SRAM, and up to 4 KBytes of backup SRAM) are included in the STM32F427xx and STM32F429xx devices, in addition to a plethora of improved I/Os and peripherals connected through two APB buses, 2 AHB buses, and a 32-bit multi-AHB bus matrix.

STM32F429IIT6 Features

  • Core Adaptive real-time accelerator (ART AcceleratorTM) and Arm® 32-bit Cortex®-M4 CPU with FPU. offering up to 180 MHz of processing power, a Multi-Processing Unit (MPU) with 225 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions with a zero-wait state for data retrieval from Flash memory.
  • Displays using a parallel port with 8080 and 6800 baud rates on an LCD
  • Fully configurable LCD/TFT display resolution controller (total width up to 4096 pixels, total height up to 2048 lines, and pixel clock up to 83 MHz)
  • Improve your graphic content production with the help of Chrom-ART AcceleratorTM (DMA2D)
  • Digital-to-analog converters with a bit depth of 2 by 12
  • The 16-stream DMA controller includes FIFOs and burst support, making it suitable for general-purpose DMA.
  • You can use any combination of the available 17 timers, including up to 12 16-bit timers, 2 32-bit timers, and 180 MHz clock speed.

Full compatibility throughout the family

Both the STM32F427xx and the STM32F429xx belong to the STM32F4 family of microcontrollers. They are pin-to-pin compatible with the STM32F2xx devices and software and feature compatible, allowing the user to try out various configurations of memory and hardware and performances (FPU, higher frequency) during the development cycle. To a large extent, the STM32F427xx and STM32F429xx devices are backward-compatible with the entire STM32F10xx family.

All of the available pins can communicate with one another. Nevertheless, the STM32F427xx and STM32F429xx cannot be used as direct replacements for the STM32F10xx devices, as their power pins are wired differently due to a difference in the power strategy used by the two families. However, only a few pins are changed when moving from the STM32F10xx to the STM32F42x family; thus, the change is still manageable.

Functional Overview

● Arm® Cortex®-M4 with FPU and embedded Flash and SRAM

Among the most recent iterations of Arm CPUs, the Arm® Cortex®-M4 with FPU processor stands out. Its purpose was to provide an inexpensive platform that could be used for MCU implementation; it has low power consumption and a small number of pins but nevertheless provides excellent computational performance and sophisticated interrupt response.

The 32-bit RISC processor at the heart of the Arm® Cortex®-M4 with FPU core boasts outstanding code efficiency, allowing it to achieve the high performance expected from an Arm core in the same memory size as 8- and 16-bit devices. The CPU can execute complicated algorithms and perform sophisticated signal processing thanks to DSP instructions. Using metalanguage development tools, its single-precision floating-point unit (FPU) accelerates program development while preventing saturation.

● Adaptive real-time memory accelerator (ART Accelerator™)

Memory accelerator ART AcceleratorTM is designed to work with the fast floating-point units of STM32’s Arm® Cortex®-M4 processors. With this, the CPU doesn’t have to idle while waiting for the Flash memory at higher frequencies, mitigating the disadvantage of using a memory technology like Arm® Cortex®-M4 with FPU over Flash.

Accelerator features include an instruction prefetch queue and branch cache, which together boost program execution speed from 128-bit Flash memory and allow the processor to operate at its maximum 225 DMIPS capability at this frequency. According to the CoreMark benchmark, the performance gained from using the ART Accelerator is similar to running a program directly from Flash memory at a CPU clock of up to 180 MHz, with no waiting.

● Memory protection unit

The Memory Protection Unit (MPU) controls how the CPU interacts with memory to ensure that no one process can harm the data or resources of another. A maximum of eight secure regions, subdivided into eight smaller regions, comprise this memory space. The sizes of the protected regions range from 32 bytes to the whole 4 GB of accessible memory.

The MPU shines brightest in situations where mission-critical or certified code must be shielded from the ineptitude of other processes. Most of the time, real-time operating systems are responsible for their administration (real-time operating system). The RTOS can identify and react to programs that attempt to access memory locations that the MPU disables. The kernel in a real-time operating system can adjust the amount of memory dedicated to the central processing unit (CPU) on the fly. In programs where it is not necessary, the MPU can be disabled.

● Embedded Flash memory

The devices have up to 2 MB of flash memory for storing data and applications.

● CRC (cyclic redundancy check) calculation unit

A CRC code can be generated from a 32-bit data word and a fixed-generating polynomial using the CRC (cyclic redundancy check) calculating unit. It is common practice to employ CRC-based algorithms for this purpose and other purposes, including checking the reliability of data storage or transfer. They provide a method of checking the integrity of Flash memory within the parameters of the EN/IEC 60335-1 standard. The CRC calculation unit aids in the computation of a software signature at runtime, compared with a reference signature generated at link time and saved in a specific memory address.

● Multi-AHB bus matrix

If many high-speed peripherals are in use at once, the 32-bit multi-AHB bus matrix will keep everything running smoothly and efficiently by connecting the masters (CPU, Ethernet, DMAs, LCD-TFT, USB HS, and DMA2D) to the slaves (Flash memory, RAM, FMC, AHB, and APB peripherals).

● DMA controller (DMA)

The gadgets have two dual-port DMAs (DMA1 and DMA2) that handle eight separate data streams. They are adept at handling data transfers between different memory locations and between the memory and the rest of the system’s peripherals. They’re made to provide you with the most throughput possible from your peripherals (AHB/APB) and feature burst transfer, specialized FIFOs, and FIFOs that can handle a lot of data simultaneously.

Due to the circular buffer management provided by the two DMA controllers, there is no need for any additional code to be run when the controller reaches the buffer’s end. The double buffering capability of the two DMA controllers allows for the seamless and code-free use of dual memory buffers. Each stream may send and receive hardware DMA requests independently and has software trigger support. The program handles the configuration, and there is no correlation between the source and destination transfer sizes.

● External interrupt/event controller (EXTI)

23 edge-detector lines make up the external interrupt/event controller and are used to trigger interrupt/event requests. Each line has its own options for configuring the trigger event (rising edge, falling edge, or both) and masking. There is a pending register that keeps track of the interrupt requests. For the EXTI to pick up an external line, the pulse width of the line must be smaller than the period of the internal APB2 clock. The sixteen external interrupt lines support connecting up to 168 general-purpose input/output (GPIO) pins.


STMicroelectronics’ STM32F429IIT6 microcontroller is a revolutionary advancement in electronic components. Its versatility and usefulness are enhanced by its ability to perform several functions in a single location. The STM32F429IIT6 has the processing capability, clock speed, and Ethernet port necessary for creating industrial automation systems or consumer electronics devices.

This microcontroller has 32-bit processing power thanks to its ARM Cortex M4 core design. It can handle any workload to its maximum clock speed of 180 MHz. The device’s 12/12/12 ADC and 12/12/12 DAC resolutions provide high-quality data capture and processing. This microcontroller can operate in temperatures from -40 to 85 degrees Celsius, making it suitable for use in various environments.

If you want to learn more about the STM32F429IIT6 or need to order this microcontroller, ICRFQ is your trusted source. As a leading electronic distributor in China, we have the expertise and knowledge to help you find the right components for your project. And with our commitment to offering the best goods at a reasonable price, you can be confident that you’re getting the best value for your money. Contact us today to learn how the STM32F429IIT6 can take your project to the next level.

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