Overview
The STM32F746BGT6 is a high-performance 32-bit microcontroller based on the ARM Cortex-M7 core launched by STMicroelectronics. It has a main frequency of up to 216MHz, supports the DSP instruction set, floating-point unit (FPU) and a rich peripheral interface. It is widely used in graphics display, audio processing, industrial control, IoT gateways, medical equipment and embedded human-machine interaction (HMI) and other fields that require extremely high computing power and peripheral integration.
This chip belongs to the STM32F7 series and balances processing performance, power consumption control, image and communication interfaces. It is an ideal core device for advanced embedded applications.
Core parameters
parameter | STM32F746BGT6 |
Kernel architecture | ARM Cortex-M7 |
Main frequency | Up to 216 MHz |
Flash program memory | 1 MB (with cache) |
SRAM | 320 KB (192 KB TCM RAM + 128 KB AXI RAM) |
Peripheral Bus | AXI interface (high-speed peripheral connection) |
Floating point support | Single-precision hardware FPU |
DSP instruction set support | support |
DMA controller | 16-channel DMA, supporting burst transfer |
GPIO quantity | Up to 114 I/Os, 5V tolerant |
Peripheral interface | USART ×6, SPI ×3, I²C ×3, CAN, USB OTG, SDIO |
Graphics acceleration | Supports TFT-LCD interface (Chrom-ART™ accelerator) |
ADC/DAC | 3 × 12-bit ADCs, 2 × 12-bit DACs |
Timer/Counter | 17 timers (advanced/general/basic) |
Package | LQFP-208 (“BG” represents the package code, “T6” industrial temperature) |
Operating temperature range | –40°C to +85°C (Industrial) |
Operating voltage range | 1.7V – 3.6V (core 1.2V, with internal regulation) |
Environmental standards | RoHS compliant, lead-free (with /G marking) |
Core Features
Ultra-high main frequency + DSP computing power
216MHz Cortex-M7 core, supports single-cycle MAC instructions, suitable for high-load applications such as real-time processing, digital filtering and motor control.
Support graphics acceleration and TFT display interface
The integration of the Chrom-ART™ graphics acceleration engine and LTDC controller simplifies the GUI development process and is suitable for HMI interfaces.
Rich communication and storage interfaces
Provides CAN, USB OTG (full speed/high speed), SDIO, SPI, I²C, USART, and FSMC to meet various peripheral docking needs.
Large RAM + Flash configuration
Up to 320KB of internal SRAM can meet the needs of image cache, data stack and operating system operation.
Low power design + multiple sleep modes
It integrates a flexible power management mechanism, supports Sleep, Stop, and Standby modes, and is suitable for battery-powered products.
Multi-channel ADC and DAC
It has high-precision analog sampling capabilities, can connect to a variety of sensors and output analog control signals.
Typical application scenarios
Industrial-grade human-machine interface (HMI) system
Terminal device with color TFT display, touch input, data acquisition and control functions.
Smart medical devices
It includes blood glucose meters, monitors, ultrasound probes, etc., taking into account calculation, interface and graphic display.
Embedded graphical interface device
Such as elevator control panels, coffee machine central controls, and smart home control screens.
IoT edge nodes and data gateways
Supports multi-protocol communication, data processing and remote OTA upgrades.
Digital audio/video systems
It can be used in high-performance applications such as audio DSP, equalizer, mixer, etc.
Performance Comparison
Function/Chip | STM32F746BGT6 | STM32F407VGT6 |
kernel | Cortex-M7 @216MHz | Cortex-M4 @168MHz |
RAM | 320KB | 192KB |
Graphics acceleration | Supports LTDC + Chrom-ART™ | Not supported |
Richness of peripheral interfaces | Stronger | medium |
Flash | 1MB | 1MB |
Performance (DMIPS) | 462 | 210 |
The STM32F746 offers nearly double the performance, enhanced graphics and memory support, and is suitable for complex human-computer interaction and compute-intensive applications.
Manufacturer Profile: STMicroelectronics
STMicroelectronics is one of the world’s leading semiconductor manufacturers, and its STM32 series is its most representative 32-bit MCU product line. The STM32F7 series targets high-end embedded applications, offering ultra-high performance, a rich peripheral set, and advanced architecture. It is widely used in a variety of fields, including industrial, medical, consumer electronics, and automotive.
Why choose the STM32F746BGT6?
● 216MHz Cortex-M7 core , meeting the needs of complex embedded
control1MB Flash + 320KB RAM , suitable for large programs and system
cache Graphics acceleration supports TFT display GUI , improving user experience
● Multiple communication interfaces (USB, CAN, SDIO, UART) for flexible
docking Compatible with STM32CubeMX / HAL / FreeRTOS , perfect development ecosystem
Industrial-grade stability , suitable for long-term reliable operation
Frequently Asked Questions (FAQ)
Q1: Does the STM32F746BGT6 support operating systems?
Yes. The STM32F746BGT6 is powered by an ARM Cortex-M7 core with a clock speed of up to 216 MHz. It offers ample performance and memory resources (1MB Flash, 320KB SRAM) to run a variety of mainstream real-time operating systems (RTOS), including FreeRTOS, uC/OS-III, ThreadX, and CMSIS-RTOS. It also supports a hardware floating-point unit (FPU) and MPU memory protection unit, which improves system responsiveness and multitasking security, making it suitable for applications such as industrial control, human-machine interfaces, and edge computing.
Q2: Can it be used for touch screens and graphics displays?
Yes, it’s a perfect fit. The STM32F746BGT6 features a built-in LTDC (LCD-TFT Display Controller) that can directly drive color TFT-LCD screens with resolutions up to XGA and supports image processing features such as double buffering and layer blending. Furthermore, the chip integrates a Chrom-ART Accelerator (DMA2D graphics accelerator), significantly improving image rendering and interface refresh efficiency. The official TouchGFX graphics library and toolchain enable low-resource, high-performance GUI development, and are widely used in graphical interface systems such as smart terminals, industrial panels, and medical instruments.
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