STM32C031C4U6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32c031c4u6",
  "title": "STM32C031C4U6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). 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",
    "stm32c031c4u6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32C031C4U6",
    "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/8590903885399597056",
    "parts": {
      "symbol": "stm32c031c4u6.kicad_sym",
      "footprint": "stm32c031c4u6.kicad_mod",
      "model_3d": "stm32c031c4u6-hero.glb",
      "model_3d_plain": "stm32c031c4u6.glb",
      "model_3d_step": "stm32c031c4u6-etched.step",
      "model_3d_step_plain": "stm32c031c4u6.step",
      "lbr": "stm32c031c4u6.lbr"
    },
    "distributor_links": {
      "lcsc": "C5456134",
      "digikey": "497-STM32C031C4U6-ND",
      "mouser": "511-STM32C031C4U6"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T02:56:18Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32C031C4U6-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32C031C4U6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with alternate functions TIM1_ETR and TIM1_BKIN, and additional functions RTC_TS, RTC_OUT1 and WKUP2."
      },
      {
        "number": "2",
        "name": "PC14-OSCX_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (PC14 at reset) that is also the OSCX_IN oscillator input, with alternate functions USART1_TX, TIM1_ETR, TIM1_BKIN2, IR_OUT, USART2_RTS_DE_CK, TIM17_CH1, TIM3_CH2, I2C1_SDA and EVENTOUT."
      },
      {
        "number": "3",
        "name": "PC15-OSCX_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (PC15 at reset) that is also the OSCX_OUT oscillator output, with alternate functions OSC32_EN, OSC_EN, TIM1_ETR and TIM3_CH3."
      },
      {
        "number": "4",
        "name": "PF3",
        "type": "power_in",
        "description": "Listed as supply (S) pin type with no alternate or additional functions."
      },
      {
        "number": "5",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive ADC reference voltage input, supply pin; ADC VREF+ range is 2 V to VDD."
      },
      {
        "number": "6",
        "name": "VDD/VDDA",
        "type": "power_in",
        "description": "Digital and analog supply, 2.0 V to 3.6 V, to be decoupled with 100 nF plus 4.7 uF ceramic capacitors placed close to the pin."
      },
      {
        "number": "7",
        "name": "VSS/VSSA",
        "type": "power_in",
        "description": "Digital and analog ground, supply pin, decoupled together with VDD/VDDA."
      },
      {
        "number": "8",
        "name": "PF0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (PF0 at reset) that is also OSC_IN, with alternate function TIM14_CH1."
      },
      {
        "number": "9",
        "name": "PF1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (PF1 at reset) that is also OSC_OUT, with alternate function OSC_EN."
      },
      {
        "number": "10",
        "name": "PF2-NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with embedded weak pull-up (NRST), 5 V-tolerant I/O with alternate functions MCO and TIM1_CH4."
      },
      {
        "number": "11",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with alternate functions USART2_CTS, TIM16_CH1, USART1_TX and TIM1_CH1, and additional functions ADC_IN0 and WKUP1."
      },
      {
        "number": "12",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_SCK/I2S1_CK, USART2_RTS_DE_CK, TIM17_CH1, USART1_RX, TIM1_CH2, I2C1_SMBA and EVENTOUT, plus ADC_IN1."
      },
      {
        "number": "13",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MOSI/I2S1_SD, USART2_TX, TIM16_CH1N, TIM3_ETR and TIM1_CH3, plus ADC_IN2, WKUP4 and LSCO."
      },
      {
        "number": "14",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART2_RX, TIM1_CH1N, TIM1_CH4 and EVENTOUT, plus ADC_IN3."
      },
      {
        "number": "15",
        "name": "PA4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_NSS/I2S1_WS, USART2_TX, TIM1_CH2N, TIM14_CH1, TIM17_CH1N and EVENTOUT, plus ADC_IN4 and RTC_OUT2."
      },
      {
        "number": "16",
        "name": "PA5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_SCK/I2S1_CK, USART2_RX, TIM1_CH3N, TIM1_CH1 and EVENTOUT, plus ADC_IN5."
      },
      {
        "number": "17",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MISO/I2S1_MCK, TIM3_CH1, TIM1_BKIN and TIM16_CH1, plus ADC_IN6."
      },
      {
        "number": "18",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM1_CH1N, TIM14_CH1 and TIM17_CH1, plus ADC_IN7."
      },
      {
        "number": "19",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_NSS/I2S1_WS, TIM3_CH3 and TIM1_CH2N, plus ADC_IN17."
      },
      {
        "number": "20",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM14_CH1, TIM3_CH4, TIM1_CH3N, TIM1_CH2N and EVENTOUT, plus ADC_IN18."
      },
      {
        "number": "21",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART1_RX, MCO2 and EVENTOUT, plus ADC_IN19."
      },
      {
        "number": "22",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with no alternate functions, additional function ADC_IN20."
      },
      {
        "number": "23",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with no alternate functions, additional function ADC_IN21."
      },
      {
        "number": "24",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM1_BKIN2, TIM1_BKIN and EVENTOUT, plus ADC_IN22."
      },
      {
        "number": "25",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM1_CH1N and EVENTOUT."
      },
      {
        "number": "26",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM1_CH2N and EVENTOUT."
      },
      {
        "number": "27",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM1_CH3N and EVENTOUT, plus additional function RTC_REFIN."
      },
      {
        "number": "28",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with MCO, USART2_TX, TIM1_CH1, EVENTOUT, SPI1_NSS/I2S1_WS, TIM1_CH2N, TIM1_CH3N, TIM3_CH3, TIM3_CH4, TIM14_CH1, USART1_RX and MCO2, plus ADC_IN8."
      },
      {
        "number": "29",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with MCO, USART1_TX, TIM1_CH2, TIM3_ETR, I2C1_SCL and EVENTOUT; can be remapped in place of PA11 via SYSCFG_CFGR1."
      },
      {
        "number": "30",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with alternate function TIM3_CH1."
      },
      {
        "number": "31",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with alternate function TIM3_CH2."
      },
      {
        "number": "32",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART1_RX, TIM1_CH3, MCO2, TIM17_BKIN, I2C1_SDA and EVENTOUT; can be remapped in place of PA12 via SYSCFG_CFGR1."
      },
      {
        "number": "33",
        "name": "PA11 [PA9]",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MISO/I2S1_MCK, USART1_CTS, TIM1_CH4 and TIM1_BKIN2, plus ADC_IN11; PA9 can be remapped here via SYSCFG_CFGR1."
      },
      {
        "number": "34",
        "name": "PA12 [PA10]",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MOSI/I2S1_SD, USART1_RTS_DE_CK, TIM1_ETR and I2S_CKIN, plus ADC_IN12; PA10 can be remapped here via SYSCFG_CFGR1."
      },
      {
        "number": "35",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O, SWDIO at reset with internal pull-up activated, with IR_OUT, TIM3_ETR, USART2_RX and EVENTOUT, plus ADC_IN13."
      },
      {
        "number": "36",
        "name": "PA14-BOOT0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O, SWCLK at reset with internal pull-down activated, also BOOT0, with USART2_TX, EVENTOUT, SPI1_NSS/I2S1_WS, USART2_RX, TIM1_CH1, MCO2 and USART1_RTS_DE_CK, plus ADC_IN14."
      },
      {
        "number": "37",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_NSS/I2S1_WS, USART2_RX, TIM1_CH1, MCO2, USART1_RTS_DE_CK and EVENTOUT."
      },
      {
        "number": "38",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with EVENTOUT and TIM16_CH1."
      },
      {
        "number": "39",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with EVENTOUT and TIM17_CH1."
      },
      {
        "number": "40",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with TIM3_ETR and TIM1_CH1N."
      },
      {
        "number": "41",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART2_CTS and TIM1_CH2N."
      },
      {
        "number": "42",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_SCK/I2S1_CK, TIM1_CH2, TIM3_CH2, USART1_RTS_DE_CK and EVENTOUT."
      },
      {
        "number": "43",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MISO/I2S1_MCK, TIM3_CH1, USART1_CTS, TIM17_BKIN and EVENTOUT."
      },
      {
        "number": "44",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM16_BKIN, TIM3_CH3 and I2C1_SMBA, plus WKUP6."
      },
      {
        "number": "45",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART1_TX, TIM1_CH3, TIM16_CH1N, TIM3_CH3, USART1_RTS_DE_CK, USART1_CTS, I2C1_SCL, I2C1_SMBA, SPI1 signals, TIM1_CH2, TIM3_CH1, TIM3_CH2, TIM16_BKIN and TIM17_BKIN, plus WKUP3."
      },
      {
        "number": "46",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART1_RX, TIM1_CH4, TIM17_CH1N, TIM3_CH4, I2C1_SDA, EVENTOUT, USART2_CTS, TIM16_CH1, TIM3_CH1 and I2C1_SCL."
      },
      {
        "number": "47",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USART2_CTS, TIM16_CH1, TIM3_CH1, I2C1_SCL and EVENTOUT."
      },
      {
        "number": "48",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with IR_OUT, USART2_RTS_DE_CK, TIM17_CH1, TIM3_CH2, I2C1_SDA and EVENTOUT."
      },
      {
        "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: VREF+ and VSS/VSSA pins are marked as passive pins in KiCad structure but are actually supply pins; ; PA11 and PA12 have remapping notation [PA9] and [PA10] indicating alternate pin configuration possib",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 50,
        "cost_usd": 0.4036,
        "at": "2026-10-07T02:56:02"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903885399597056",
        "pages": 108,
        "sha256": "c0de50247b672919",
        "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"
    },
    "models_3d": [
      {
        "file": "stm32c031c4u6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32c031c4u6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "bdceb9934a904051607c3fb5f003c0ba55a228135258da8bdfc4b35a7e40c444",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "UFQFPN-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "49"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32c031c4u6"
  ],
  "discovery_pitch": "STM32C031C4U6 (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",
    "stm32c031c4u6.kicad_sym",
    "stm32c031c4u6.kicad_mod",
    "stm32c031c4u6.glb",
    "stm32c031c4u6.step",
    "stm32c031c4u6.lbr",
    "docs/hero.png",
    "docs/stm32c031c4u6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32c031c4u6-hero.glb",
    "stm32c031c4u6-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}