STM32G431x6 — Datasheet Summary, Specs & Alternatives

01 — Overview

This STMicroelectronics datasheet covers the STM32G431x6, x8, and B MCU family. It details a 32-bit Arm Cortex-M4 microcontroller with FPU running up to 170 MHz. Key features include 128 KB Flash memory, 32 KB SRAM, and mathematical accelerators like CORDIC and FMAC. The device operates on 1.71 V to 3.6 V supply voltage. It offers rich analog peripherals including multiple ADCs, DACs, and comparators, plus extensive communication interfaces like FDCAN, USB 2.0, and I2C. Low-power modes and secure memory protection are also highlighted for embedded applications.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	3.2 mA	3.35 mA	3.5 mA	fHCLK = fHSEup to 48 MHz included, bypass mode PLL ON above 48 MHz all peripherals disable; Range 2; 26 MHz
output current	—	—	20 mA
supply voltage range	2 V	3.3 V	3.6 V
input offset voltage drift	—	10 µV/°C	—
input offset voltage	—	5 mV	10 mV
gain bandwidth	7 MHz	13 MHz	—	100mV ≤ Output dynamic range ≤ VDDA- 100mV
cmrr	—	60 dB	—
operating temperature	-40 °C	—	85 °C	Maximum power dissipation
clock frequency	0 Hz	—	170 MHz
propagation delay	—	16.7 ns	31 ns	50pF load on output; VDDA≥ 2.7 V
slew rate	2.5 MV/s	6.5 MV/s	—	Normal mode
psrr	—	-80 dB	-28 dB	Normal mode DAC output buffer ONCL ≤ 50 pF, RL = 5 kΩ, DC
input voltage noise density	—	250 nV/√Hz	—	at 1 kHz, Output loaded with 4 kΩ
cpu speed	—	170 MHz	—
program memory size	—	32.8 kB	—
ram size	—	32.8 kB	—
io count	—	86	—
adc resolution	—	12 bit	—
core size	—	32 bit	—
data retention	30 year	—	—	1 kcycle(2)at TA = 85 °C
program erase cycles	10 kcycle	—	—	TA = -40 to +105 °C
settling time	—	1.7 µs	3 µs	Normal mode DAC output buffer ONCL ≤ 50 pF, RL ≥ 5 kΩ; ±0.5 LSB

03 — Alternatives

Closest matches to STM32G431x6

STM32G071C8 2.7× lower clock frequency, 2.7× lower cpu speed, 2.0× higher program memory size

STM32F405OET6 16.0× higher program memory size, 6.0× higher ram size, 5.7× lower clock frequency

CH32V203C6T6 18.6× lower quiescent current, 10.6× lower clock frequency, 3.3× lower input offset voltage

MSPM0G3505SDGS28 8.5× lower clock frequency, 5.8× lower input voltage noise density, 5.0× lower output current

CH32V003F4U6 18.6× lower quiescent current, 16.0× lower ram size, 3.4× lower cpu speed

PY32F002A 10.7× lower ram size, 10.6× lower clock frequency, 7.1× lower cpu speed

PY32F030F28U6 8.0× lower ram size, 3.5× lower clock frequency, 3.5× lower cpu speed

STM32F103C8T6 2.4× lower clock frequency, 2.4× lower cpu speed, 2.0× higher program memory size

04 — FAQ

Frequently asked questions

What is the ADC resolution of the STM32G431x6?

The ADC resolution is 12 bit.

What is the maximum clock frequency of the STM32G431x6?

The maximum clock frequency is 170 MHz.

What is the common-mode rejection ratio (CMRR) of the STM32G431x6?

The common-mode rejection ratio (CMRR) is 60 dB.

What is the core size of the STM32G431x6?

The core size is 32 bit.

What is the maximum CPU speed of the STM32G431x6?

The maximum CPU speed is 170 MHz.

What is the data retention time for the STM32G431x6 after 1 kcycle(2)at TA = 85 °C?

The data retention is 30 year.

What is the gain bandwidth of the STM32G431x6?

The gain bandwidth is 13 MHz when the output dynamic range is between 100mV and VDDA- 100mV.

What is the input offset voltage?

The input offset voltage is 5 mV.