component
STM32G431KBU3
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "stm32g431kbu3",
"title": "STM32G431KBU3",
"brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"embedded processors & controllers",
"stm32g431kbu3",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "STM32G431KBU3",
"manufacturer": "STMicroelectronics",
"package": "UFQFPN-32(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923589898735616",
"parts": {
"symbol": "stm32g431kbu3.kicad_sym",
"footprint": "stm32g431kbu3.kicad_mod",
"model_3d": "stm32g431kbu3-etched.glb",
"model_3d_plain": "stm32g431kbu3.glb",
"model_3d_step": "stm32g431kbu3-etched.step",
"model_3d_step_plain": "stm32g431kbu3.step",
"lbr": "stm32g431kbu3.lbr"
},
"distributor_links": {
"lcsc": "C1341901",
"digikey": "STM32G431KBU3-ND",
"mouser": "511-STM32G431KBU3"
},
"distributor_check": {
"checked_at": "2026-10-01T17:59:58Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "STM32G431KBU3-ND",
"status": "found"
},
"mouser": {
"pn": "511-STM32G431KBU3",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VDD",
"type": "power_in",
"description": "Main power supply voltage input, 1.71 V to 3.6 V"
},
{
"number": "2",
"name": "PF0-OSC_IN",
"type": "bidirectional",
"description": "5V tolerant I/O pin with analog switch driven by VDDA, oscillator input for 4-48 MHz crystal or external clock source"
},
{
"number": "3",
"name": "PF1-OSC_OUT",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch driven by VDDA, oscillator output for 4-48 MHz crystal"
},
{
"number": "4",
"name": "PG10-NRST",
"type": "bidirectional",
"description": "System reset input pin with embedded weak pull-up resistor, 5V tolerant I/O"
},
{
"number": "5",
"name": "PA0",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC1/ADC2 input channel 1, COMP1_INM/COMP3_INP, RTC_TAMP2, WKUP1"
},
{
"number": "6",
"name": "PA1",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC1/ADC2 input channel 2, COMP1_INP/OPAMP1_VINP/OPAMP3_VINP"
},
{
"number": "7",
"name": "PA2",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC1 input channel 3, COMP2_INM/OPAMP1_VOUT, WKUP4/LSCO"
},
{
"number": "8",
"name": "PA3",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC1 input channel 4, COMP2_INP/OPAMP1_VINM/OPAMP1_VINP"
},
{
"number": "9",
"name": "PA4",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 17, DAC1_OUT1, COMP1_INM"
},
{
"number": "10",
"name": "PA5",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 13, DAC1_OUT2, COMP2_INM/OPAMP2_VINM"
},
{
"number": "11",
"name": "PA6",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 3, OPAMP2_VOUT"
},
{
"number": "12",
"name": "PA7",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 4, COMP2_INP/OPAMP1_VINP/OPAMP2_VINP"
},
{
"number": "13",
"name": "PB0",
"type": "bidirectional",
"description": "3.6V tolerant I/O pin with analog switch, ADC1 input channel 15, COMP4_INP/OPAMP2_VINP/OPAMP3_VINP"
},
{
"number": "14",
"name": "VSSA",
"type": "power_in",
"description": "Analog ground pin"
},
{
"number": "15",
"name": "VDDA",
"type": "power_in",
"description": "Analog power supply input, 1.62 V to 3.6 V, shares reference with VREFBUF_OUT"
},
{
"number": "16",
"name": "VSS",
"type": "power_in",
"description": "Ground pin"
},
{
"number": "17",
"name": "VDD",
"type": "power_in",
"description": "Main power supply voltage input, 1.71 V to 3.6 V"
},
{
"number": "18",
"name": "PA8",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, MCO/I2C3_SCL/I2C2_SDA/TIM1_CH1"
},
{
"number": "19",
"name": "PA9",
"type": "bidirectional",
"description": "5V tolerant I/O pin with dead battery function for USB Type-C PD, I2C3_SMBA/I2C2_SCL/TIM1_CH2"
},
{
"number": "20",
"name": "PA10",
"type": "bidirectional",
"description": "5V tolerant I/O pin with dead battery function for USB Type-C PD and analog switch, USB_CRS_SYNC/TIM1_CH3"
},
{
"number": "21",
"name": "PA11",
"type": "bidirectional",
"description": "5V tolerant I/O pin with USB function (USB_DM), SPI2_MOSI/TIM1_CH1N/COMP1_OUT/FDCAN1_RX"
},
{
"number": "22",
"name": "PA12",
"type": "bidirectional",
"description": "5V tolerant I/O pin with USB function (USB_DP), TIM16_CH1/I2SCKIN/TIM1_CH2N/COMP2_OUT/FDCAN1_TX"
},
{
"number": "23",
"name": "PA13",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, SWDIO-JTMS/TIM16_CH1N/I2C1_SCL"
},
{
"number": "24",
"name": "PA14",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, SWCLK-JTCK/LPTIM1_OUT/I2C1_SDA"
},
{
"number": "25",
"name": "PA15",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, JTDI/TIM2_CH1/I2C1_SCL/SPI1_NSS"
},
{
"number": "26",
"name": "PB3",
"type": "bidirectional",
"description": "5V tolerant I/O pin, JTDO-TRACESWO/TIM2_CH2/SPI1_SCK/USART2_TX"
},
{
"number": "27",
"name": "PB4",
"type": "bidirectional",
"description": "5V tolerant I/O pin with USB Type-C PD capability (UCPD1_CC2), JTRST/TIM16_CH1/SPI1_MISO"
},
{
"number": "28",
"name": "PB5",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, TIM16_BKIN/TIM3_CH2/SPI1_MOSI"
},
{
"number": "29",
"name": "PB6",
"type": "bidirectional",
"description": "5V tolerant I/O pin with USB Type-C PD capability (UCPD1_CC1), TIM16_CH1N/TIM4_CH1/USART1_TX"
},
{
"number": "30",
"name": "PB7",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, TIM17_CH1N/TIM4_CH2/I2C1_SDA/USART1_RX, PVD_IN"
},
{
"number": "31",
"name": "PB8-BOOT0",
"type": "bidirectional",
"description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, boot mode selection, TIM16_CH1/I2C1_SCL/USART3_RX"
},
{
"number": "32",
"name": "VSS",
"type": "power_in",
"description": "Ground pin"
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.2",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.2",
"primary_model": "claude-haiku-4-5-20251001",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin 15 shares VDDA and VREF+ on same pad - combined nomenclature used per Table 12"
],
"pages_sent": 76,
"cost_usd": 0.5788,
"at": "2026-10-01T17:59:41"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923589898735616",
"pages": 197,
"sha256": "caaa126a00ab9e06",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
}
},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "UFQFPN-32(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"stm32g431kbu3"
],
"discovery_pitch": "STM32G431KBU3 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"files": [
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"stm32g431kbu3.lbr",
"docs/hero.png",
"docs/stm32g431kbu3-datasheet.pdf",
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"visibility": {
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}