STM32G431KBU3

{
  "slug": "stm32g431kbu3",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32g431kbu3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32g431kbu3.kicad_sym",
    "stm32g431kbu3.kicad_mod",
    "stm32g431kbu3.glb",
    "stm32g431kbu3.step",
    "stm32g431kbu3.lbr",
    "docs/hero.png",
    "docs/stm32g431kbu3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "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"
    }
  }
}