STM32G431CBU6

{
  "slug": "stm32g431cbu6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32g431cbu6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32g431cbu6.kicad_sym",
    "stm32g431cbu6.kicad_mod",
    "stm32g431cbu6.glb",
    "stm32g431cbu6.step",
    "stm32g431cbu6.lbr",
    "docs/hero.png",
    "docs/stm32g431cbu6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32g431cbu6-hero.glb",
    "stm32g431cbu6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32G431CBU6",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-48(7x7)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886250049060864",
    "parts": {
      "symbol": "stm32g431cbu6.kicad_sym",
      "footprint": "stm32g431cbu6.kicad_mod",
      "model_3d": "stm32g431cbu6-hero.glb",
      "model_3d_plain": "stm32g431cbu6.glb",
      "model_3d_step": "stm32g431cbu6-etched.step",
      "model_3d_step_plain": "stm32g431cbu6.step",
      "lbr": "stm32g431cbu6.lbr"
    },
    "distributor_links": {
      "lcsc": 529356,
      "digikey": "497-19475-ND",
      "mouser": "511-STM32G431CBU6"
    },
    "distributor_check": {
      "checked_at": "2026-10-03T00:42:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-19475-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32G431CBU6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup domain supply voltage for RTC and backup registers, 1.55 V to 3.6 V"
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "GPIO Port C bit 13, 5V tolerant, alternate functions include TIM1_BKIN, TIM1_CH1N, TIM8_CH4N, additional functions WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT1"
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "GPIO Port C bit 14 or 32 kHz oscillator input, 5V tolerant, alternate function EVENTOUT, additional function OSC32_IN"
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "GPIO Port C bit 15 or 32 kHz oscillator output, 5V tolerant, alternate function EVENTOUT, additional function OSC32_OUT"
      },
      {
        "number": "5",
        "name": "PF0-OSC_IN",
        "type": "input",
        "description": "GPIO Port F bit 0 or main oscillator input, 5V tolerant Fm+ capable, with I2C2_SDA and SPI2_NSS alternate functions and ADC1_IN10, OSC_IN additional functions"
      },
      {
        "number": "6",
        "name": "PF1-OSC_OUT",
        "type": "output",
        "description": "GPIO Port F bit 1 or main oscillator output, 5V tolerant with analog switch, alternate function SPI2_SCK/I2S2_CK, additional functions ADC2_IN10, COMP3_INM, OSC_OUT"
      },
      {
        "number": "7",
        "name": "PG10-NRST",
        "type": "bidirectional",
        "description": "Reset pin with embedded weak pull-up, alternate functions MCO and EVENTOUT"
      },
      {
        "number": "8",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO Port A bit 0, 3.3V tolerant with analog switch, alternate functions TIM2_CH1, USART2_CTS, COMP1_OUT, TIM8_BKIN, additional functions ADC12_IN1, COMP1_INM, COMP3_INP, RTC_TAMP2, WKUP1"
      },
      {
        "number": "9",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO Port A bit 1, 3.3V tolerant with analog switch, alternate functions RTC_REFIN, TIM2_CH2, USART2_RTS_DE, TIM15_CH1N, additional functions ADC12_IN2, COMP1_INP, OPAMP1_VINP, OPAMP3_VINP"
      },
      {
        "number": "10",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO Port A bit 2, 3.3V tolerant with analog switch, alternate functions TIM2_CH3, USART2_TX, COMP2_OUT, TIM15_CH1, UCPD1_FRSTX, additional functions ADC1_IN3, COMP2_INM, OPAMP1_VOUT, WKUP4/LSCO"
      },
      {
        "number": "11",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO Port A bit 3, 3.3V tolerant with analog switch, alternate functions TIM2_CH4, SAI1_CK1, USART2_RX, TIM15_CH2, LPUART1_RX, additional functions ADC1_IN4, COMP2_INP, OPAMP1_VINM/OPAMP1_VINP"
      },
      {
        "number": "12",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO Port A bit 4, 3.3V tolerant with analog switch, alternate functions TIM3_CH2, SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_CK, additional functions ADC2_IN17, DAC1_OUT1, COMP1_INM"
      },
      {
        "number": "13",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO Port A bit 5, 3.3V tolerant with analog switch, alternate functions TIM2_CH1, TIM2_ETR, SPI1_SCK, UCPD1_FRSTX, additional functions ADC2_IN13, DAC1_OUT2, COMP2_INM, OPAMP2_VINM"
      },
      {
        "number": "14",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO Port A bit 6, 3.3V tolerant with analog switch, alternate functions TIM16_CH1, TIM3_CH1, TIM8_BKIN, SPI1_MISO, TIM1_BKIN, COMP1_OUT, additional functions ADC2_IN3, OPAMP2_VOUT"
      },
      {
        "number": "15",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO Port A bit 7, 3.3V tolerant with analog switch, alternate functions TIM17_CH1, TIM3_CH2, TIM8_CH1N, SPI1_MOSI, TIM1_CH1N, COMP2_OUT, additional functions ADC2_IN4, COMP2_INP, OPAMP1_VINP, OPAMP2_VINP"
      },
      {
        "number": "16",
        "name": "PC4",
        "type": "bidirectional",
        "description": "GPIO Port C bit 4, 5V tolerant Fm+ capable, alternate functions TIM1_ETR, I2C2_SCL, USART1_TX, additional function ADC2_IN5"
      },
      {
        "number": "17",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO Port B bit 0, 3.3V tolerant with analog switch, alternate functions TIM3_CH3, TIM8_CH2N, TIM1_CH2N, UCPD1_FRSTX, additional functions ADC1_IN15, COMP4_INP, OPAMP2_VINP, OPAMP3_VINP"
      },
      {
        "number": "18",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO Port B bit 1, 3.3V tolerant with analog switch, alternate functions TIM3_CH4, TIM8_CH3N, TIM1_CH3N, COMP4_OUT, LPUART1_RTS_DE, additional functions ADC1_IN12, COMP1_INP, OPAMP3_VOUT"
      },
      {
        "number": "19",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO Port B bit 2, 3.3V tolerant with analog switch, alternate functions RTC_OUT2, LPTIM1_OUT, I2C3_SMBA, additional functions ADC2_IN12, COMP4_INM, OPAMP3_VINM"
      },
      {
        "number": "20",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage for ADC, 2.4 V to 3.6 V, can be connected to VREFBUF_OUT"
      },
      {
        "number": "21",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply voltage for ADC, comparators, and OPAMP, 1.62 V to 3.6 V when ADC used, 1.71 V to 3.6 V when DAC used, 2.0 V to 3.6 V when OPAMP used"
      },
      {
        "number": "22",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO Port B bit 10, 3.3V tolerant with analog switch, alternate functions TIM2_CH3, USART3_TX, LPUART1_RX, TIM1_BKIN, SAI1_SCK_A, additional function OPAMP3_VINM"
      },
      {
        "number": "23",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply voltage, 1.71 V to 3.6 V"
      },
      {
        "number": "24",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO Port B bit 11, 5V tolerant with analog switch, alternate functions TIM2_CH4, USART3_RX, LPUART1_TX, additional function ADC12_IN14"
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO Port B bit 12, 5V tolerant with analog switch, alternate functions I2C2_SMBA, SPI2_NSS/I2S2_WS, TIM1_BKIN, USART3_CK, LPUART1_RTS_DE, additional function ADC1_IN11"
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO Port B bit 13, 3.3V tolerant, alternate functions SPI2_SCK/I2S2_CK, TIM1_CH1N, USART3_CTS, LPUART1_CTS, additional function OPAMP3_VINP"
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO Port B bit 14, 3.3V tolerant, alternate functions TIM15_CH1, SPI2_MISO, TIM1_CH2N, USART3_RTS_DE, COMP4_OUT, additional functions ADC1_IN5, OPAMP2_VINP"
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "GPIO Port B bit 15, 5V tolerant with analog switch, alternate functions RTC_REFIN, TIM15_CH2, TIM15_CH1N, COMP3_OUT, TIM1_CH3N, SPI2_MOSI/I2S2_SD, additional function ADC2_IN15"
      },
      {
        "number": "29",
        "name": "PC6",
        "type": "bidirectional",
        "description": "GPIO Port C bit 6, 5V tolerant, alternate functions TIM3_CH1, TIM8_CH1, I2S2_MCK"
      },
      {
        "number": "30",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO Port A bit 8, 5V tolerant Fm+ capable, alternate functions MCO, I2C3_SCL, I2C2_SDA, I2S2_MCK, TIM1_CH1, USART1_CK, TIM4_ETR, SAI1_CK2, SAI1_SCK_A"
      },
      {
        "number": "31",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO Port A bit 9, 5V tolerant USB Type-C PD capable Dead Battery function, alternate functions I2C3_SMBA, I2C2_SCL, I2S3_MCK, TIM1_CH2, USART1_TX, TIM15_BKIN, TIM2_CH3, SAI1_FS_A, additional function UCPD1_DBCC1"
      },
      {
        "number": "32",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO Port A bit 10, 5V tolerant USB Type-C PD Dead Battery function, alternate functions TIM17_BKIN, USB_CRS_SYNC, I2C2_SMBA, SPI2_MISO, TIM1_CH3, USART1_RX, TIM2_CH4, TIM8_BKIN, SAI1_D1, additional function UCPD1_DBCC2"
      },
      {
        "number": "33",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO Port A bit 11, 5V tolerant USB capable, alternate functions SPI2_MOSI/I2S2_SD, TIM1_CH1N, USART1_CTS, COMP1_OUT, FDCAN1_RX, TIM4_CH1, TIM1_CH4, TIM1_BKIN2, additional function USB_DM"
      },
      {
        "number": "34",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO Port A bit 12, 5V tolerant USB capable, alternate functions TIM16_CH1, I2SCKIN, TIM1_CH2N, USART1_RTS_DE, COMP2_OUT, FDCAN1_TX, TIM4_CH2, TIM1_ETR, additional function USB_DP"
      },
      {
        "number": "35",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply voltage, 1.71 V to 3.6 V"
      },
      {
        "number": "36",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO Port A bit 13, 5V tolerant Fm+ capable, alternate functions SWDIO-JTMS, TIM16_CH1N, I2C1_SCL, IR_OUT, USART3_CTS, TIM4_CH3, SAI1_SD_B, internal pull-up activated after reset"
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO Port A bit 14, 5V tolerant Fm+ capable, alternate functions SWCLK-JTCK, LPTIM1_OUT, I2C1_SDA, TIM8_CH2, TIM1_BKIN, USART2_TX, SAI1_FS_B, internal pull-down activated after reset"
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO Port A bit 15, 5V tolerant Fm+ capable, alternate functions JTDI, TIM2_CH1, TIM8_CH1, I2C1_SCL, SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_RX, UART4_RTS_DE, internal pull-up activated after reset"
      },
      {
        "number": "39",
        "name": "PC10",
        "type": "bidirectional",
        "description": "GPIO Port C bit 10, 5V tolerant, alternate functions TIM8_CH1N, UART4_TX, SPI3_SCK/I2S3_CK, USART3_TX"
      },
      {
        "number": "40",
        "name": "PC11",
        "type": "bidirectional",
        "description": "GPIO Port C bit 11, 5V tolerant Fm+ capable, alternate functions TIM8_CH2N, UART4_RX, SPI3_MISO, USART3_RX, I2C3_SDA"
      },
      {
        "number": "41",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO Port B bit 3, 5V tolerant, alternate functions JTDO-TRACESWO, TIM2_CH2, TIM4_ETR, USB_CRS_SYNC, TIM8_CH1N, SPI1_SCK, SPI3_SCK/I2S3_CK, USART2_TX, internal pull-up activated after reset"
      },
      {
        "number": "42",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO Port B bit 4, 5V tolerant USB Type-C PD CC2 capable, alternate functions JTRST, TIM16_CH1, TIM3_CH1, TIM8_CH2N, SPI1_MISO, SPI3_MISO, USART2_RX, TIM17_BKIN, internal pull-up/down after reset"
      },
      {
        "number": "43",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO Port B bit 5, 5V tolerant Fm+ capable, alternate functions TIM16_BKIN, TIM3_CH2, TIM8_CH3N, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI/I2S3_SD, USART2_CK, I2C3_SDA, TIM17_CH1, LPTIM1_IN1, SAI1_SD_B"
      },
      {
        "number": "44",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO Port B bit 6, 5V tolerant USB Type-C PD CC1 capable, alternate functions TIM16_CH1N, TIM4_CH1, TIM8_CH1, TIM8_ETR, USART1_TX, COMP4_OUT, TIM8_BKIN2, LPTIM1_ETR, SAI1_FS_B"
      },
      {
        "number": "45",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO Port B bit 7, 5V tolerant Fm+ capable, alternate functions TIM17_CH1N, TIM4_CH2, I2C1_SDA, TIM8_BKIN, USART1_RX, COMP3_OUT, TIM3_CH4, LPTIM1_IN2, UART4_CTS, additional function PVD_IN"
      },
      {
        "number": "46",
        "name": "PB8-BOOT0",
        "type": "bidirectional",
        "description": "GPIO Port B bit 8 or boot pin, 5V tolerant Fm+ capable, alternate functions TIM16_CH1, TIM4_CH3, SAI1_CK1, I2C1_SCL, USART3_RX, COMP1_OUT, FDCAN1_RX, TIM8_CH2, TIM1_BKIN, SAI1_MCLK_A"
      },
      {
        "number": "47",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO Port B bit 9, 5V tolerant Fm+ capable, alternate functions TIM17_CH1, TIM4_CH4, SAI1_D2, I2C1_SDA, IR_OUT, USART3_TX, COMP2_OUT, FDCAN1_TX, TIM8_CH3, TIM1_CH3N, SAI1_FS_A"
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply voltage, 1.71 V to 3.6 V"
      },
      {
        "number": "49",
        "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: Three VDD pins (pins 23, 35, 48) are present in UFQFPN48 package for proper power distribution. No s; Pins PC7, PC8, PC9, PC12, PC0-PC3, PC5, PE0-PE15, PD0-PD15, PF2, PF9-PF10 and other GPIO defined in ",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 79,
        "cost_usd": 0.5652,
        "at": "2026-10-03T00:42:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886250049060864",
        "pages": 200,
        "sha256": "cabefb21b47dc4c1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  }
}