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STMicroelectronics STM32G431CBT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32G431CBT6 STM32G4 MCU, 170MHz Cortex-M4F, 128KB Flash

MPNSTM32G431CBT6
Active

STMicroelectronics STM32G4 series, STM32G431CBT6, ARM Cortex-M4F, 32-Bit Single-Core, 170MHz, 128KB Flash, 32K x 8 RAM, 38 I/O, CANbus, I²C, SPI, UART/USART, 48-LQFP, -40°C to 85°C.

$5.75587Ref. price · indicative, final on quote
Packaging48-LQFP
RoHSROHS3 Compliant
SeriesSTM32G4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32G431CBT6 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)38
Core processorARM® Cortex®-M4F
Case48-LQFP
Data convertersA/D 17x12b; D/A 4x12b
Program memory size128KB (128K x 8)

Product details

Its core runs at 170 MHz with a single-precision floating-point unit, which means a single-cycle MAC on a 32-bit float — relevant when you are closing a current-control loop in a motor drive or a digital power converter and the math has to finish before the next PWM cycle.

Analog front-end integration: 17 ADC channels, 4 DAC outputs

This part packs 17 analog-to-digital converter channels at 12-bit resolution and four 12-bit digital-to-analog converters. For a sensor-fusion application — say, three phase currents plus a DC-link voltage plus a temperature input — you can wire all five signals to the ADC without an external multiplexer. The four DAC outputs let you generate analog setpoints or offset trim voltages directly from the core, saving an external DAC package and its SPI wiring.

Connectivity and peripheral set for industrial bus integration

Package and footprint — 48-LQFP with 7x7 mm body

Housed in a 48-LQFP package with a 7x7 mm body and 0.5 mm pitch, this part fits on a two-layer PCB without blind vias.

For a production BOM line, this means no urgent requalification horizon.

Frequently asked questions

How does STM32G431CBT6 compare to STM32L151CBU6A?

The STM32L151CBU6A runs a Cortex-M3 core at 32 MHz with 32 KB Flash, targeting ultra-low-power battery applications. The STM32G431CBT6 runs a Cortex-M4F with FPU at 170 MHz with 128 KB Flash, plus more analog channels (17 ADC vs 16, 4 DAC vs 2). They are not pin-compatible — the uses a UFQFPN-48 package — so a board redesign is required to switch between them. The G4 is the performance choice for real-time control; the is the low-power choice for energy-harvesting or coin-cell systems.