CH32F103C8T6

{
  "slug": "ch32f103c8t6",
  "version": "0.1.0",
  "type": "component",
  "description": "WCH(Jiangsu Qin Heng) Microcontroller Units (MCUs/MPUs/SOCs), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "ch32f103c8t6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch32f103c8t6.kicad_sym",
    "ch32f103c8t6.kicad_mod",
    "ch32f103c8t6.glb",
    "ch32f103c8t6.step",
    "ch32f103c8t6.lbr",
    "docs/hero.png",
    "docs/ch32f103c8t6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch32f103c8t6-hero.glb",
    "ch32f103c8t6-hero.overlay.json",
    "ch32f103c8t6-etched.glb"
  ],
  "component": {
    "mpn": "CH32F103C8T6",
    "manufacturer": "WCH(Jiangsu Qin Heng)",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a7bfdfeb1c6e3fec22ca48f24361163d.pdf",
    "parts": {
      "symbol": "ch32f103c8t6.kicad_sym",
      "footprint": "ch32f103c8t6.kicad_mod",
      "model_3d": "ch32f103c8t6-hero.glb",
      "model_3d_plain": "ch32f103c8t6-etched.glb",
      "model_3d_step": "ch32f103c8t6-etched.step",
      "model_3d_step_plain": "ch32f103c8t6.step",
      "lbr": "ch32f103c8t6.lbr"
    },
    "distributor_links": {
      "lcsc": "C2687451"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:25:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup supply of 1.8~5.5V (not above VDD) that powers the RTC, external 32kHz oscillator and backup registers when VDD is off."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "General I/O PC13 after reset, with TAMPER-RTC as default alternate function."
      },
      {
        "number": "3",
        "name": "PC14",
        "type": "bidirectional",
        "description": "I/O/analog pin PC14 after reset, with OSC32_IN (32.768kHz crystal input) as default alternate function."
      },
      {
        "number": "4",
        "name": "PC15",
        "type": "bidirectional",
        "description": "I/O/analog pin PC15 after reset, with OSC32_OUT (32.768kHz crystal output) as default alternate function."
      },
      {
        "number": "5",
        "name": "OSC_IN",
        "type": "input",
        "description": "Analog/Schmitt input for the 4~16MHz HSE crystal or external clock; can be remapped to PD0."
      },
      {
        "number": "6",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Analog/CMOS output for the 4~16MHz HSE crystal; can be remapped to PD1."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "External reset I/O pin with internal weak pull-up of 30~55kΩ, low-level input max 0.8V."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground, must be connected to VSS."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply of 2.7~5.5V (3.0~5.5V when ADC is used) for ADC, temperature sensor and PLL, must be connected to VDD."
      },
      {
        "number": "10",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "I/O/analog PA0 with WKUP, USART2_CTS, ADC_IN0, TIM2_CH1 and TIM2_ETR alternate functions."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "I/O/analog PA1 with USART2_RTS, ADC_IN1 and TIM2_CH2 alternate functions."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "I/O/analog PA2 with USART2_TX, ADC_IN2 and TIM2_CH3 alternate functions."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "I/O/analog PA3 with USART2_RX, ADC_IN3 and TIM2_CH4 alternate functions."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "I/O/analog PA4 with SPI1_NSS, USART2_CK, ADC_IN4 and DAC_OUT1 alternate functions."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "I/O/analog PA5 with SPI1_SCK, ADC_IN5 and DAC_OUT2 alternate functions."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "I/O/analog PA6 with SPI1_MISO, ADC_IN6 and TIM3_CH1; remap TIM1_BKIN."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "I/O/analog PA7 with SPI1_MOSI, ADC_IN7 and TIM3_CH2; remap TIM1_CH1N."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "I/O/analog PB0 with ADC_IN8 and TIM3_CH3; remap TIM1_CH2N."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "I/O/analog PB1 with ADC_IN9 and TIM3_CH4; remap TIM1_CH3N."
      },
      {
        "number": "20",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "General I/O PB2, also serves as BOOT1 boot mode select."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "I/O PB10 with I2C2_SCL and USART3_TX; remap TIM2_CH3."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "I/O PB11 with I2C2_SDA and USART3_RX; remap TIM2_CH4."
      },
      {
        "number": "23",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "24",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply of 2.7~5.5V for I/O, RC oscillators, reset module and voltage regulator."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "I/O PB12 with SPI2_NSS, I2C2_SMBAI, USART3_CK and TIM1_BKIN."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "I/O PB13 with SPI2_SCK, USART3_CTS and TIM1_CH1N."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "I/O PB14 with SPI2_MISO, USART3_RTS and TIM1_CH2N."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "I/O PB15 with SPI2_MOSI and TIM1_CH3N."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "I/O PA8 with USART1_CK, TIM1_CH1 and MCO."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "I/O PA9 with USART1_TX and TIM1_CH2."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "I/O PA10 with USART1_RX and TIM1_CH3."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "I/O/analog PA11 with USART1_CTS, USBDM, CAN_RX and TIM1_CH4."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "I/O/analog PA12 with USART1_RTS, USBDP, CAN_TX and TIM1_ETR."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "I/O pin whose main function after reset is SWDIO (serial wire debug data)."
      },
      {
        "number": "35",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "36",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply of 2.7~5.5V."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "I/O pin whose main function after reset is SWCLK (serial wire debug clock)."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "I/O PA15 with remap functions TIM2_CH1/TIM2_ETR and SPI1_NSS."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "I/O PB3 with remap functions TRACESWO, TIM2_CH2 and SPI1_SCK."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "I/O PB4 with remap functions TIM3_CH1 and SPI1_MISO."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "I/O PB5 with I2C1_SMBAI; remap TIM3_CH2 and SPI1_MOSI."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "I/O/analog PB6 with I2C1_SCL, TIM4_CH1 and USBHDM; remap USART1_TX."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "I/O/analog PB7 with I2C1_SDA, TIM4_CH2 and USBHDP; remap USART1_RX."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot mode select input, used with BOOT1 to choose flash, system memory or SRAM boot."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "I/O/analog PB8 with TIM4_CH3; remap I2C1_SCL and CAN_RX."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "I/O/analog PB9 with TIM4_CH4; remap I2C1_SDA and CAN_TX."
      },
      {
        "number": "47",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "48",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply of 2.7~5.5V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin types are inferred from the table's I/O/A/P class letters (I = Schmitt input, O = tri-state outp; The pin diagram on page 11 is garbled, so pin numbers come from table 2-1 (LQFP48 column). Pin 20 is"
        ],
        "pages_sent": 29,
        "cost_usd": 0.3216,
        "at": "2026-10-22T22:25:16"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a7bfdfeb1c6e3fec22ca48f24361163d.pdf",
        "pages": 29,
        "sha256": "1f68cc1270a5d14a",
        "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": "ch32f103c8t6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch32f103c8t6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8a8892dec908d53bce102d3753bc130ae9796d04dadaf9f06ff7a34f6950f16b",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}