STMicroelectronics STM32G4 Microcontrollers

Mixed-signal MCUs feature multiple connectivity options including USB Type-C interface and PHY

STMicroelectronics’ STM32G4 series of microcontrollers provides a combination of high processor throughput, generous provision of analog peripherals, and a choice of connectivity options.


The STM32G4 MCUs are based on a 32-bit Arm® Cortex®-M4 core, which includes floating-point unit and digital signal processor instructions, running at a clock speed of 170MHz. The series also offers three kinds of hardware accelerators:

• ART Accelerator™ block for speeding processor-memory interactions

• CCM-SRAM memory routine booster

• Mathematical accelerators


The STM32G4 series also offers:

• Advanced analog peripherals, including comparators, operational amplifiers and DACs

• 12-bit ADC

• Dual-bank Flash memory with error-correcting code. The dual-bank configuration supports in-the-field firmware upgrades.

• Securable memory area

• High-resolution timer

• AES hardware encryption


Advanced connectivity options include a USB Type-C® interface and physical layer (PHY). The USB Type-C implementation supports the USB Power Delivery specification for controlling power supplied to peripheral devices.


The STM32G4 series consists of:

• The STM32G4x1 Access line – general-purpose MCUs with a basic set of analog peripherals

• The STM32G4x3 Performance line – general-purpose MCUs with a high number of analog peripherals

• The STM32G4x4 Hi-resolution line – includes a high-resolution timer and complex waveform builder plus event handler for digital power conversion. This line of MCUs is suitable for applications such as digital switch-mode power supplies, lighting, welding, solar power generation and wireless charging.

STMicroelectronics — STM32G4


  • High core performance:
    • Up to 213 DMIPS
    • 550 CoreMark® score
  • CAN-FD interface
  • Quad SPI Flash interface
  • USB 2.0 interface
  • USART, I2C, SPI and SAI serial interfaces
  • Temperature range options:
    • -40°C to 85°C
    • -40°C to 125°C


  • Control systems
  • Home appliances
  • E-bikes
  • Air-conditioning units
  • Industrial equipment
  • Motor control
  • Servers
  • Telecoms equipment
  • Electric vehicle charging stations
  • Instrumentation and measurement equipment

Evaluation Board

Board part number: NUCLEO-G431RB


This STM32 Nucleo board features an STM32G431 microcontroller in an LQFP64 package, a user LED, user and reset push-buttons, a 32.768kHz crystal oscillator, Arduino™ Uno V3 and ST morpho headers, and comprehensive free software libraries and examples via the STM32Cube MCU Package.

STMicroelectronics — NUCLEO-G431RB

USB Type-C® and USB-C® are registered trademarks of USB Implementers Forum.

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