STM32G431K6U6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32g431k6u6",
  "title": "STM32G431K6U6",
  "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": [
    "component",
    "embedded processors & controllers",
    "stm32g431k6u6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32G431K6U6",
    "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/8588940324853469184",
    "parts": {
      "symbol": "stm32g431k6u6.kicad_sym",
      "footprint": "stm32g431k6u6.kicad_mod",
      "model_3d": "stm32g431k6u6-etched.glb",
      "model_3d_plain": "stm32g431k6u6.glb",
      "model_3d_step": "stm32g431k6u6-etched.step",
      "model_3d_step_plain": "stm32g431k6u6.step",
      "lbr": "stm32g431k6u6.lbr"
    },
    "distributor_links": {
      "lcsc": "C1236625",
      "digikey": "497-STM32G431K6U6-ND",
      "mouser": "511-STM32G431K6U6"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T18:27:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32G431K6U6-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32G431K6U6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply pin, main VDD for core and I/O logic, 1.71-3.6 V."
      },
      {
        "number": "2",
        "name": "PF0-OSC_IN",
        "type": "bidirectional",
        "description": "GPIO port F pin 0 serving as external oscillator crystal input; 5 V tolerant with analog switch function supplied by VDDA; supports I2C2_SDA, SPI2_NSS, TIM1_CH3N alternate functions and ADC1_IN10 analog input."
      },
      {
        "number": "3",
        "name": "PF1-OSC_OUT",
        "type": "bidirectional",
        "description": "GPIO port F pin 1 serving as external oscillator crystal output; 3.6 V tolerant with analog switch function; supports SPI2_SCK alternate function, ADC2_IN10 analog input, and COMP3_INM comparator input."
      },
      {
        "number": "4",
        "name": "PG10-NRST",
        "type": "bidirectional",
        "description": "System reset pin and GPIO port G pin 10 with embedded weak pull-up; 5 V tolerant; can serve as MCO output or general I/O, provides NRST reset function."
      },
      {
        "number": "5",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO port A pin 0 with analog functionality; 3.6 V tolerant with analog switch; supports TIM2_CH1, USART2_CTS, COMP1_OUT, TIM8 functions and ADC12_IN1 input; wakeup pin WKUP1."
      },
      {
        "number": "6",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO port A pin 1 with analog functionality; 3.6 V tolerant with analog switch; supports TIM2_CH2, USART2_RTS_DE, TIM15_CH1N, RTC_REFIN, and op-amp/comparator functions; ADC12_IN2 input."
      },
      {
        "number": "7",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO port A pin 2 with analog functionality; 3.6 V tolerant; supports TIM2_CH3, USART2_TX, COMP2_OUT, TIM15_CH1, LPUART1_TX, UCPD1_FRSTX; ADC1_IN3 input and op-amp output function."
      },
      {
        "number": "8",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO port A pin 3 with analog functionality; 3.6 V tolerant with analog switch; supports TIM2_CH4, SAI1_CK1, USART2_RX, TIM15_CH2, LPUART1_RX; ADC1_IN4 input and op-amp functions."
      },
      {
        "number": "9",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO port A pin 4 with analog output functionality (DAC1_OUT1); 3.6 V tolerant with analog switch; supports TIM3_CH2, SPI1_NSS, SPI3_NSS, USART2_CK, SAI1_FS_B and ADC2_IN17 analog input."
      },
      {
        "number": "10",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO port A pin 5 with analog functionality; 3.6 V tolerant with analog switch; supports TIM2_CH1, TIM2_ETR, SPI1_SCK, UCPD1_FRSTX; ADC2_IN13 input and DAC1_OUT2, op-amp functions."
      },
      {
        "number": "11",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO port A pin 6 with analog functionality; 3.6 V tolerant; supports TIM16_CH1, TIM3_CH1, TIM8_BKIN, SPI1_MISO, TIM1_BKIN, COMP1_OUT, LPUART1_CTS; ADC2_IN3 input and op-amp output."
      },
      {
        "number": "12",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO port A pin 7 with analog functionality; 3.6 V tolerant; supports TIM17_CH1, TIM3_CH2, TIM8_CH1N, SPI1_MOSI, TIM1_CH1N, COMP2_OUT, UCPD1_FRSTX; ADC2_IN4 input and op-amp functions."
      },
      {
        "number": "13",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO port B pin 0 with analog functionality (ADC1_IN15); 3.6 V tolerant with analog switch; supports TIM3_CH3, TIM8_CH2N, TIM1_CH2N, UCPD1_FRSTX and comparator/op-amp functions."
      },
      {
        "number": "14",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground supply pin for ADC and analog peripherals."
      },
      {
        "number": "15",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog supply pin (1.62-3.6 V for ADC/COMP/DAC, 2.0-3.6 V for op-amp, 2.4-3.6 V with VREFBUF); serves as VREFBUF_OUT for internal voltage reference buffer (2.048/2.5/2.9 V outputs)."
      },
      {
        "number": "16",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin, second VSS connection for I/O and digital circuits."
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply pin, second VDD for core and I/O logic, 1.71-3.6 V."
      },
      {
        "number": "18",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO port A pin 8; 5 V tolerant with Fm+ capability; supports MCO, I2C3_SCL, I2C2_SDA, I2S2_MCK, TIM1_CH1, USART1_CK, TIM4_ETR, SAI1 alternate functions."
      },
      {
        "number": "19",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO port A pin 9; 5 V tolerant with USB dead battery and UCPD dead battery (UCPD1_DBCC1) functions; supports I2C3, I2C2, I2S3, TIM1_CH2, USART1_TX, TIM15_BKIN, TIM2_CH3, SAI1_FS_A alternate functions."
      },
      {
        "number": "20",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO port A pin 10; 5 V tolerant with USB dead battery (UCPD1_DBCC2) and analog switch functions; supports TIM17_BKIN, USB_CRS_SYNC, I2C2, SPI2, TIM1_CH3, USART1_RX, TIM2_CH4, TIM8_BKIN, SAI1 alternate functions."
      },
      {
        "number": "21",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO port A pin 11 with USB functionality (USB_DM); 5 V tolerant; supports SPI2_MOSI, TIM1_CH1N, USART1_CTS, COMP1_OUT, FDCAN1_RX, TIM4_CH1, TIM1_CH4, TIM1_BKIN2 alternate functions."
      },
      {
        "number": "22",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO port A pin 12 with USB functionality (USB_DP); 5 V tolerant; supports TIM16_CH1, I2SCKIN, TIM1_CH2N, USART1_RTS_DE, COMP2_OUT, FDCAN1_TX, TIM4_CH2, TIM1_ETR alternate functions."
      },
      {
        "number": "23",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO port A pin 13 / SWDIO-JTMS debug pin; 5 V tolerant with Fm+ capability; internal pull-up activated after reset; supports TIM16_CH1N, I2C1_SCL, IR_OUT, USART3_CTS, TIM4_CH3, SAI1_SD_B alternate functions."
      },
      {
        "number": "24",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO port A pin 14 / SWCLK-JTCK debug pin; 5 V tolerant with Fm+ capability; internal pull-down activated after reset; supports LPTIM1_OUT, I2C1_SDA, TIM8_CH2, TIM1_BKIN, USART2_TX, SAI1_FS_B alternate functions."
      },
      {
        "number": "25",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO port A pin 15 / JTDI debug pin; 5 V tolerant with Fm+ capability; internal pull-up activated after reset; supports TIM2_CH1, TIM8_CH1, I2C1_SCL, SPI1_NSS, SPI3_NSS, USART2_RX, UART4_RTS_DE, TIM1 alternate functions."
      },
      {
        "number": "26",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO port B pin 3 / JTDO-TRACESWO debug pin; 5 V tolerant; internal pull-up after reset; supports TIM2_CH2, TIM4_ETR, USB_CRS_SYNC, TIM8_CH1N, SPI1_SCK, SPI3_SCK, USART2_TX, TIM3_ETR, SAI1_SCK_B alternate functions."
      },
      {
        "number": "27",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO port B pin 4 / JTRST debug pin; 5 V tolerant USB Type-C capable with UCPD1_CC2 function; internal pull-down (5.1 kΩ) controlled by UCPD dead battery detection; supports TIM16_CH1, TIM3_CH1, TIM8_CH2N, SPI1_MISO, SPI3_MISO, USART2_RX, TIM17_BKIN, SAI1_MCLK_B alternate functions."
      },
      {
        "number": "28",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO port B pin 5; 5 V tolerant with Fm+ capability; supports TIM16_BKIN, TIM3_CH2, TIM8_CH3N, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART2_CK, I2C3_SDA, TIM17_CH1, LPTIM1_IN1, SAI1_SD_B alternate functions."
      },
      {
        "number": "29",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO port B pin 6; 5 V tolerant USB Type-C capable with UCPD1_CC1 function; internal pull-down (5.1 kΩ) controlled by UCPD dead battery detection; supports TIM16_CH1N, TIM4_CH1, TIM8_CH1, TIM8_ETR, USART1_TX, COMP4_OUT, TIM8_BKIN2, LPTIM1_ETR, SAI1_FS_B alternate functions."
      },
      {
        "number": "30",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO port B pin 7; 5 V tolerant with Fm+ capability; supports TIM17_CH1N, TIM4_CH2, I2C1_SDA, TIM8_BKIN, USART1_RX, COMP3_OUT, TIM3_CH4, LPTIM1_IN2, UART4_CTS alternate functions; PVD_IN power supervision input."
      },
      {
        "number": "31",
        "name": "PB8-BOOT0",
        "type": "bidirectional",
        "description": "GPIO port B pin 8 and BOOT0 boot mode select pin; 5 V tolerant with Fm+ capability; recommended to set to non-analog mode after startup if left unconnected; supports TIM16_CH1, TIM4_CH3, SAI1_CK1, I2C1_SCL, USART3_RX, COMP1_OUT, FDCAN1_RX, TIM8_CH2, TIM1_BKIN, SAI1_MCLK_A alternate functions."
      },
      {
        "number": "32",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin, second VSS connection for digital circuits."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "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: VDDA and VREF+ share pin 15 with internal connection to VREFBUF_OUT; maximum voltage specifications ; UCPD dead battery pull-down control on pins PB4 and PB6 (CC1/CC2) is activated by voltage levels on ; Pins PA13, PA14, PA15, and PB3 have JTAG/SWD debug alternate functions with internal pull-up/pull-do"
        ],
        "pages_sent": 81,
        "cost_usd": 0.5872,
        "at": "2026-10-01T18:27:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940324853469184",
        "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": [
    "stm32g431k6u6"
  ],
  "discovery_pitch": "STM32G431K6U6 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32g431k6u6.kicad_sym",
    "stm32g431k6u6.kicad_mod",
    "stm32g431k6u6.glb",
    "stm32g431k6u6.step",
    "stm32g431k6u6.lbr",
    "docs/hero.png",
    "docs/stm32g431k6u6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  }
}