Overview
The STM32G431C8U6 is a mainstream Arm Cortex-M4 microcontroller from STMicroelectronics. It is part of the STM32G431x series, which is based on the high-performance Arm Cortex-M4 32-bit RISC core. This MCU operates at a frequency of up to 170 MHz and features a single-precision floating-point unit (FPU), DSP instructions, and a memory protection unit (MPU) for enhanced security.
The device is equipped with 128 Kbytes of Flash memory and 32 Kbytes of SRAM, along with various protection mechanisms for embedded memory. It supports a wide range of operating conditions, including a voltage range of 1.71 V to 3.6 V and temperature ranges from -40 to +85 °C (or +105 °C junction) and -40 to +125 °C (or +130 °C junction).
The STM32G431C8U6 is designed for low-power applications, offering multiple power-saving modes such as sleep, stop, standby, and shutdown. It also includes independent power supplies for analog components and a VBAT input for backup of the RTC and registers.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) |
| Frequency | Up to 170 MHz with 213 DMIPS |
| Flash Memory | 128 Kbytes with ECC support, PCROP, securable memory area, 1 Kbyte OTP |
| SRAM | 32 Kbytes with hardware parity check on the first 16 Kbytes, 10 Kbytes CCM SRAM |
| Voltage Range | 1.71 V to 3.6 V |
| Temperature Range | -40 to +85 °C (or +105 °C junction), -40 to +125 °C (or +130 °C junction) |
| Package | UFQFPN 48 7x7x0.55 mm |
| ADCs | 2 x ADCs, up to 23 channels, resolution up to 16-bit |
| DACs | 4 x 12-bit DAC channels |
| Timers | 14 timers, including 1 x 32-bit timer and multiple 16-bit timers |
| Communication Interfaces | 4 x USART/UARTs, 1 x LPUART, 3 x SPIs, 1 x SAI, USB 2.0 full-speed interface |
| Other Features | True random number generator (RNG), CRC calculation unit, 96-bit unique ID, serial wire debug (SWD), JTAG, Embedded Trace Macrocell™ |
Key Features
- Arm 32-bit Cortex-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory
- Mathematical hardware accelerators: CORDIC for trigonometric functions acceleration, FMAC: filter mathematical accelerator
- 128 Kbytes of Flash memory with ECC support, proprietary code readout protection (PCROP), securable memory area, 1 Kbyte OTP
- 22 Kbytes of SRAM with hardware parity check implemented on the first 16 Kbytes, 10 Kbytes CCM SRAM
- Low-power modes: sleep, stop, standby, and shutdown
- VBAT supply for RTC and backup registers
- Up to 86 fast I/Os, all mappable on external interrupt vectors, several I/Os with 5 V tolerant capability
- 12-channel DMA controller
- 2 x ADCs with up to 23 channels, resolution up to 16-bit with hardware oversampling
- 4 x 12-bit DAC channels, including buffered and unbuffered channels
- 4 x ultra-fast rail-to-rail analog comparators, 3 x operational amplifiers in PGA mode
- Internal voltage reference buffer (VREFBUF) supporting three output voltages
- Calendar RTC with alarm, periodic wakeup from stop/standby
- Communication interfaces: FDCAN controller, I2C, USART/UARTs, LPUART, SPIs, SAI, USB 2.0 full-speed interface
- True random number generator (RNG), CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32G431C8U6 is versatile and can be used in a variety of applications, including:
- Industrial automation and control systems
- Personal electronics such as smart home devices and wearables
- Automotive systems, particularly those requiring advanced motor control and communication interfaces
- Medical devices that need precise analog and digital signal processing
- IoT devices requiring low power consumption and robust communication capabilities
Q & A
- What is the core architecture of the STM32G431C8U6?
The STM32G431C8U6 is based on the Arm 32-bit Cortex-M4 CPU with a single-precision floating-point unit (FPU) and Adaptive real-time accelerator (ART Accelerator).
- What is the maximum operating frequency of the STM32G431C8U6?
The maximum operating frequency is up to 170 MHz with 213 DMIPS.
- How much Flash and SRAM memory does the STM32G431C8U6 have?
The device has 128 Kbytes of Flash memory and 32 Kbytes of SRAM.
- What are the voltage and temperature operating ranges for the STM32G431C8U6?
The voltage range is 1.71 V to 3.6 V, and the temperature range is -40 to +85 °C (or +105 °C junction) and -40 to +125 °C (or +130 °C junction).
- What types of ADCs and DACs are available on the STM32G431C8U6?
The device features 2 x ADCs with up to 23 channels and resolution up to 16-bit, and 4 x 12-bit DAC channels.
- Does the STM32G431C8U6 support low-power modes?
Yes, it supports sleep, stop, standby, and shutdown low-power modes.
- What communication interfaces are available on the STM32G431C8U6?
The device includes FDCAN, I2C, USART/UARTs, LPUART, SPIs, SAI, and USB 2.0 full-speed interface.
- Does the STM32G431C8U6 have any mathematical hardware accelerators?
Yes, it includes CORDIC for trigonometric functions acceleration and FMAC for filter mathematical acceleration.
- What kind of development support does the STM32G431C8U6 offer?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- What is the package type of the STM32G431C8U6?
The package type is UFQFPN 48 7x7x0.55 mm.
- Are there any specific applications where the STM32G431C8U6 is particularly suited?
It is suited for industrial automation, personal electronics, automotive systems, medical devices, and IoT devices.
