STM32C031C4T6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32c031c4t6",
  "title": "STM32C031C4T6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-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",
    "stm32c031c4t6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32C031C4T6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603059337909202944",
    "parts": {
      "symbol": "stm32c031c4t6.kicad_sym",
      "footprint": "stm32c031c4t6.kicad_mod",
      "model_3d": "stm32c031c4t6-hero.glb",
      "model_3d_plain": "stm32c031c4t6.glb",
      "model_3d_step": "stm32c031c4t6-etched.step",
      "model_3d_step_plain": "stm32c031c4t6.step",
      "lbr": "stm32c031c4t6.lbr"
    },
    "distributor_links": {
      "lcsc": "C5456207",
      "digikey": "497-STM32C031C4T6-ND",
      "mouser": "511-STM32C031C4T6"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T22:58:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32C031C4T6-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32C031C4T6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) 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 (FT) that also serves as 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 (FT) that also serves as 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 a supply-type pin (S) in Table 12 with no alternate or additional functions given; mapping to power_in follows the printed type and needs review."
      },
      {
        "number": "5",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive ADC reference voltage, 2 V minimum up to VDD (Table 54); internally connected to VDD/VDDA on packages without this pin."
      },
      {
        "number": "6",
        "name": "VDD/VDDA",
        "type": "power_in",
        "description": "Standard operating supply voltage VDD from 2.0 V to 3.6 V, also the analog supply VDDA from 2.0 V to 3.6 V (Tables 24 and 54)."
      },
      {
        "number": "7",
        "name": "VSS/VSSA",
        "type": "power_in",
        "description": "Ground pin; all voltages in the datasheet are referenced to VSS, and this pin also serves as the analog ground VSSA."
      },
      {
        "number": "8",
        "name": "PF0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that also serves as the OSC_IN oscillator input, with alternate function TIM14_CH1."
      },
      {
        "number": "9",
        "name": "PF1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that also serves as the OSC_OUT oscillator output, with alternate function OSC_EN."
      },
      {
        "number": "10",
        "name": "PF2-NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin (RST type) with embedded weak pull-up, also usable as a 5 V-tolerant I/O (FT) with alternate functions MCO and TIM1_CH4."
      },
      {
        "number": "11",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) 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 (FT) with alternate functions SPI1_SCK/I2S1_CK, USART2_RTS_DE_CK, TIM17_CH1, USART1_RX, TIM1_CH2, I2C1_SMBA and EVENTOUT, and additional function ADC_IN1."
      },
      {
        "number": "13",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_MOSI/I2S1_SD, USART2_TX, TIM16_CH1N, TIM3_ETR and TIM1_CH3, and additional functions ADC_IN2, WKUP4 and LSCO."
      },
      {
        "number": "14",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions USART2_RX, TIM1_CH1N, TIM1_CH4 and EVENTOUT, and additional function ADC_IN3."
      },
      {
        "number": "15",
        "name": "PA4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_NSS/I2S1_WS, USART2_TX, TIM1_CH2N, TIM14_CH1, TIM17_CH1N and EVENTOUT, and additional functions ADC_IN4 and RTC_OUT2."
      },
      {
        "number": "16",
        "name": "PA5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_SCK/I2S1_CK, USART2_RX, TIM1_CH3N, TIM1_CH1 and EVENTOUT, and additional function ADC_IN5."
      },
      {
        "number": "17",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_MISO/I2S1_MCK, TIM3_CH1, TIM1_BKIN and TIM16_CH1, and additional function ADC_IN6."
      },
      {
        "number": "18",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM1_CH1N, TIM14_CH1 and TIM17_CH1, and additional function ADC_IN7."
      },
      {
        "number": "19",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_NSS/I2S1_WS, TIM3_CH3 and TIM1_CH2N, and additional function ADC_IN17."
      },
      {
        "number": "20",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM14_CH1, TIM3_CH4, TIM1_CH3N, TIM1_CH2N and EVENTOUT, and additional function ADC_IN18."
      },
      {
        "number": "21",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions USART1_RX, MCO2 and EVENTOUT, and additional function ADC_IN19."
      },
      {
        "number": "22",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with no alternate functions listed in AF tables and additional function ADC_IN20."
      },
      {
        "number": "23",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with no alternate functions listed in AF tables and additional function ADC_IN21."
      },
      {
        "number": "24",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_BKIN2, TIM1_BKIN and EVENTOUT, and additional function ADC_IN22."
      },
      {
        "number": "25",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH1N and EVENTOUT."
      },
      {
        "number": "26",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH2N and EVENTOUT."
      },
      {
        "number": "27",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH3N and EVENTOUT, and additional function RTC_REFIN."
      },
      {
        "number": "28",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions MCO, USART2_TX, TIM1_CH1, EVENTOUT, SPI1_NSS/I2S1_WS, TIM1_CH2N, TIM1_CH3N, TIM3_CH3, TIM3_CH4, TIM14_CH1, USART1_RX and MCO2, and additional function ADC_IN8."
      },
      {
        "number": "29",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions MCO, USART1_TX, TIM1_CH2, TIM3_ETR, I2C1_SCL and EVENTOUT; PA9 can be remapped in place of PA11 using SYSCFG_CFGR1."
      },
      {
        "number": "30",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate function TIM3_CH1."
      },
      {
        "number": "31",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate function TIM3_CH2."
      },
      {
        "number": "32",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions USART1_RX, TIM1_CH3, MCO2, TIM17_BKIN, I2C1_SDA and EVENTOUT; PA10 can be remapped in place of PA12 using SYSCFG_CFGR1."
      },
      {
        "number": "33",
        "name": "PA11 [PA9]",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_MISO/I2S1_MCK, USART1_CTS, TIM1_CH4 and TIM1_BKIN2, and additional function ADC_IN11; default mapping of PA9 remap is noted in Table 12."
      },
      {
        "number": "34",
        "name": "PA12 [PA10]",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_MOSI/I2S1_SD, USART1_RTS_DE_CK, TIM1_ETR and I2S_CKIN, and additional function ADC_IN12."
      },
      {
        "number": "35",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) configured as SWDIO after reset, with an internal pull-up active on reset, and alternate functions IR_OUT, TIM3_ETR, USART2_RX and EVENTOUT, plus additional function ADC_IN13."
      },
      {
        "number": "36",
        "name": "PA14-BOOT0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) configured as SWCLK after reset, with an internal pull-down active on reset, also used as BOOT0 with additional function ADC_IN14, and alternate functions USART2_TX, EVENTOUT, SPI1_NSS/I2S1_WS, USART2_RX, TIM1_CH1, MCO2 and USART1_RTS_DE_CK."
      },
      {
        "number": "37",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions 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 (FT) with alternate functions EVENTOUT and TIM16_CH1."
      },
      {
        "number": "39",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions EVENTOUT and TIM17_CH1."
      },
      {
        "number": "40",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM3_ETR and TIM1_CH1N."
      },
      {
        "number": "41",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions USART2_CTS and TIM1_CH2N."
      },
      {
        "number": "42",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions 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 (FT) with alternate functions SPI1_MISO/I2S1_MCK, TIM3_CH1, USART1_CTS, TIM17_BKIN and EVENTOUT."
      },
      {
        "number": "44",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM16_BKIN, TIM3_CH3 and I2C1_SMBA, and additional function WKUP6."
      },
      {
        "number": "45",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions including USART1_TX, TIM1_CH3, TIM16_CH1N, USART1_CTS, I2C1_SCL, I2C1_SMBA, SPI1 signals, TIM1_CH2, TIM3 channels, TIM16_BKIN and TIM17_BKIN, and additional function WKUP3."
      },
      {
        "number": "46",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions 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 (FT) with alternate functions USART2_CTS, TIM16_CH1, TIM3_CH1, I2C1_SCL and EVENTOUT."
      },
      {
        "number": "48",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions IR_OUT, USART2_RTS_DE_CK, TIM17_CH1, TIM3_CH2, I2C1_SDA and EVENTOUT."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The LQFP48 column entry for PC14 is garbled in the text extraction (page 30 shows '22', page 31 show; PF3 is printed as pin type S (supply) in Table 12 with no alternate or additional functions. It was ; PF2-NRST is I/O FT with the NRST reset function (Table 11 RST type). It was typed as bidirectional; "
        ],
        "pages_sent": 50,
        "cost_usd": 0.2289,
        "at": "2026-10-11T22:58:25"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603059337909202944",
        "pages": 108,
        "sha256": "c0de50247b672919",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stm32c031c4t6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32c031c4t6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "20f307ece34e63dff3b7feae9cfd59c52ba8445ff4c93b77c9c9faf81ebc55b5",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "48"
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32c031c4t6"
  ],
  "discovery_pitch": "STM32C031C4T6 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "visibility": {
    "public": true
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}