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STM32G431KBT6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-32(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32G431KBT6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-32(7x7)
STM32G431KBT6 from STMicroelectronics, in a LQFP-32(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Supply voltage for digital logic and I/O ports, 1.71 to 3.6 V |
| 2 | PF0-OSC_IN | input | External oscillator input (5V tolerant, analog switch capable), alternative function: I2C2_SDA, SPI2_NSS/I2S2_WS, TIM1_CH3N |
| 3 | PF1-OSC_OUT | output | External oscillator output (5V tolerant, analog switch capable), alternative function: SPI2_SCK/I2S2_CK |
| 4 | PG10-NRST | bidirectional | System reset input with embedded weak pull-up resistor, alternative function: MCO (master clock output) |
| 5 | PA0 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM2_CH1, USART2_CTS, COMP1_OUT, additional functions: ADC12_IN1, COMP1_INM, RTC_TAMP2, WKUP1 |
| 6 | PA1 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM2_CH2, USART2_RTS_DE, TIM15_CH1N, additional functions: ADC12_IN2, COMP1_INP, OPAMP1_VINP |
| 7 | PA2 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM2_CH3, USART2_TX, COMP2_OUT, LPUART1_TX, additional functions: ADC1_IN3, COMP2_INM, OPAMP1_VOUT |
| 8 | PA3 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM2_CH4, USART2_RX, TIM15_CH2, LPUART1_RX, SAI1_MCLK_A, additional functions: ADC1_IN4, COMP2_INP |
| 9 | PA4 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM3_CH2, SPI1_NSS, USART2_CK, additional functions: ADC2_IN17, DAC1_OUT1, COMP1_INM |
| 10 | PA5 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM2_CH1, TIM2_ETR, SPI1_SCK, additional functions: ADC2_IN13, DAC1_OUT2, COMP2_INM, OPAMP2_VINM |
| 11 | PA6 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM16_CH1, TIM3_CH1, SPI1_MISO, COMP1_OUT, LPUART1_CTS, additional functions: ADC2_IN3, OPAMP2_VOUT |
| 12 | PA7 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM17_CH1, TIM3_CH2, SPI1_MOSI, COMP2_OUT, additional functions: ADC2_IN4, COMP2_INP, OPAMP1_VINP, OPAMP2_VINP |
| 13 | PB0 | bidirectional | General purpose I/O (3.6V tolerant, analog capable), alternative functions: TIM3_CH3, TIM1_CH2N, additional functions: ADC1_IN15, COMP4_INP, OPAMP2_VINP, OPAMP3_VINP |
| 14 | VSSA | power_in | Analog ground (must be connected to VSS, typically with filtering capacitor 10 nF + 1 µF) |
| 15 | VDDA/VREF+ | power_in | Analog supply voltage and voltage reference input, 1.62 to 3.6 V for ADC/COMP operation, requires 10 nF + 1 µF filtering capacitors |
| 16 | VSS | power_in | Ground connection for digital circuits, must be connected with VDD using 100 nF decoupling capacitor |
| 17 | VDD | power_in | Supply voltage for digital logic and I/O ports, 1.71 to 3.6 V |
| 18 | PA8 | bidirectional | General purpose I/O (5V tolerant Fm+ capable), alternative functions: MCO, I2C3_SCL, I2C2_SDA, TIM1_CH1, USART1_CK, SAI1_CK2, additional function: I2S2_MCK |
| 19 | PA9 | bidirectional | General purpose I/O (5V tolerant, USB PD Dead Battery capable), alternative functions: I2C3_SMBA, I2C2_SCL, TIM1_CH2, USART1_TX, TIM15_BKIN, additional functions: I2S3_MCK, UCPD1_DBCC1 |
| 20 | PA10 | bidirectional | General purpose I/O (5V tolerant, USB PD Dead Battery capable), alternative functions: TIM17_BKIN, USB_CRS_SYNC, I2C2_SMBA, SPI2_MISO, TIM1_CH3, USART1_RX, additional function: UCPD1_DBCC2 |
| 21 | PA11 | bidirectional | General purpose I/O (5V tolerant, USB capable), alternative functions: SPI2_MOSI/I2S2_SD, TIM1_CH1N, USART1_CTS, COMP1_OUT, FDCAN1_RX, additional function: USB_DM |
| 22 | PA12 | bidirectional | General purpose I/O (5V tolerant, USB capable), alternative functions: TIM16_CH1, TIM1_CH2N, USART1_RTS_DE, COMP2_OUT, FDCAN1_TX, additional function: USB_DP |
| 23 | PA13 | bidirectional | General purpose I/O (5V tolerant Fm+ capable), configured as SWDIO-JTMS after reset, alternative functions: TIM16_CH1N, I2C1_SCL, IR_OUT, USART3_CTS, SAI1_SD_B |
| 24 | PA14 | bidirectional | General purpose I/O (5V tolerant Fm+ capable), configured as SWCLK-JTCK after reset, alternative functions: LPTIM1_OUT, I2C1_SDA, TIM8_CH2, TIM1_BKIN, USART2_TX, SAI1_FS_B |
| 25 | PA15 | bidirectional | General purpose I/O (5V tolerant Fm+ capable), configured as JTDI after reset, alternative functions: TIM2_CH1, TIM8_CH1, I2C1_SCL, SPI1_NSS, USART2_RX, TIM1_BKIN, TIM2_ETR |
| 26 | PB3 | bidirectional | General purpose I/O (5V tolerant), configured as JTDO-TRACESWO after reset, alternative functions: TIM2_CH2, TIM4_ETR, USB_CRS_SYNC, TIM8_CH1N, SPI1_SCK, USART2_TX, TIM3_ETR, SAI1_SCK_B |
| 27 | PB4 | bidirectional | General purpose I/O (5V tolerant, USB PD CC2 capable), configured as JTRST after reset, alternative functions: TIM16_CH1, TIM3_CH1, TIM8_CH2N, SPI1_MISO, USART2_RX, TIM17_BKIN, additional function: UCPD1_CC2 |
| 28 | PB5 | bidirectional | General purpose I/O (5V tolerant Fm+ capable), alternative functions: TIM16_BKIN, TIM3_CH2, TIM8_CH3N, I2C1_SMBA, SPI1_MOSI, USART2_CK, I2C3_SDA, TIM17_CH1, LPTIM1_IN1, SAI1_SD_B |
| 29 | PB6 | bidirectional | General purpose I/O (5V tolerant, USB PD CC1 capable), alternative functions: TIM16_CH1N, TIM4_CH1, TIM8_CH1, USART1_TX, COMP4_OUT, LPTIM1_ETR, SAI1_FS_B, additional function: UCPD1_CC1 |
| 30 | PB7 | bidirectional | General purpose I/O (5V tolerant Fm+ capable), alternative functions: TIM17_CH1N, TIM4_CH2, I2C1_SDA, TIM8_BKIN, USART1_RX, COMP3_OUT, TIM3_CH4, LPTIM1_IN2, additional function: PVD_IN (power supply monitoring) |
| 31 | PB8-BOOT0 | bidirectional | Boot select pin (5V tolerant Fm+ capable), also general purpose I/O, alternative functions: TIM16_CH1, TIM4_CH3, SAI1_CK1, I2C1_SCL, USART3_RX, COMP1_OUT, FDCAN1_RX, TIM8_CH2, SAI1_MCLK_A |
| 32 | VSS | power_in | Ground connection for digital circuits, must be connected with VDD using 100 nF decoupling capacitor |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 32 |
CAD (KiCad official)
- Symbol:
STM32G431KBT6 - Footprint:
Package_QFP:LQFP-32_7x7mm_P0.8mm - 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32g431kbt6-etched.step/stm32g431kbt6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32g431kbt6.step/stm32g431kbt6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (200 pp, sha256
cabefb21b47dc4c1, retrieved 2026-09-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).