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STMicroelectronics STM32G431KBU6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32G431KBU6 STM32G4 MCU, 170 MHz ARM Cortex-M4F

MPNSTM32G431KBU6
Active

STMicroelectronics STM32G4 series, STM32G431KBU6, 32-bit ARM Cortex-M4F MCU, 170 MHz, 128 KB Flash, 32K x 8 RAM, CANbus, I²C, SPI, UART/USART, 26 I/O, 1.71V~3.6V, -40°C~85°C, 32-UFQFN Exposed Pad.

$6.6500Ref. price · indicative, final on quote
STMicroelectronics STM32G431KBU6 datasheet (PDF)
Packaging32-UFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesSTM32G4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32G431KBU6 specifications
ParameterValue
SeriesSTM32G4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed170MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)26
Core processorARM® Cortex®-M4F
Case32-UFQFN Exposed Pad
Data convertersA/D 11x12b; D/A 4x12b
Program memory size128KB (128K x 8)

Product details

Analog integration — 11 ADC channels and 4 DAC outputs

On-chip data converters include eleven 12-bit ADC channels and four 12-bit DAC outputs. That density of analog front-end means a single STM32G431KBU6 can sense multiple current/voltage feedback points and generate analog setpoints or reference levels without external converter ICs, shrinking the mixed-signal BOM for a servo drive or a programmable power supply.

CANbus support is a single channel, enough for industrial fieldbus or automotive sub-net communication. The peripheral list also includes DMA, PWM timers, brown-out detect, and a watchdog — a complete set for a standalone controller node.

Package and supply range

The STM32G431KBU6 is a surface-mount part in a 32-UFQFN Exposed Pad package (5x5 mm body) with 26 I/O.

Frequently asked questions

Is STM32G431KBU6 obsolete or end-of-life?

No — STMicroelectronics lists the STM32G431KBU6 as Active.

How does STM32G431KBU6 compare to STM32L151CBU6A?

The STM32L151CBU6A runs a Cortex-M3 at 32 MHz with 37 I/O and USB, while the STM32G431KBU6 runs a Cortex-M4F at 170 MHz with 26 I/O and no USB. The G4 part offers over 5x the core clock speed and an FPU, making it the choice for compute-intensive control loops; the part draws less power and has more I/O for lower-speed, battery-sensitive designs.