CH32V103C8T6

{
  "slug": "ch32v103c8t6",
  "version": "0.1.0",
  "type": "component",
  "description": "WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "ch32v103c8t6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch32v103c8t6.kicad_sym",
    "ch32v103c8t6.kicad_mod",
    "ch32v103c8t6.glb",
    "ch32v103c8t6.step",
    "ch32v103c8t6.lbr",
    "docs/hero.png",
    "docs/ch32v103c8t6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch32v103c8t6-hero.glb",
    "ch32v103c8t6-hero.overlay.json",
    "ch32v103c8t6-etched.glb"
  ],
  "component": {
    "mpn": "CH32V103C8T6",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866790709673984",
    "parts": {
      "symbol": "ch32v103c8t6.kicad_sym",
      "footprint": "ch32v103c8t6.kicad_mod",
      "model_3d": "ch32v103c8t6-hero.glb",
      "model_3d_plain": "ch32v103c8t6-etched.glb",
      "model_3d_step": "ch32v103c8t6-etched.step",
      "model_3d_step_plain": "ch32v103c8t6.step",
      "lbr": "ch32v103c8t6.lbr"
    },
    "distributor_links": {
      "lcsc": "C2764428"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:43:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply, 1.8 V to 5.5 V and must not exceed VDD; it powers the RTC, the external 32 kHz oscillator and the backup registers when VDD is removed."
      },
      {
        "number": "2",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "General-purpose I/O when the backup domain is powered from VDD; acts as TAMPER input, RTC alarm or second output when powered from VBAT, and in VDD mode as output it is limited to 2 MHz with max 30 pF load."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "GPIO or LSE (32.768 kHz oscillator) input when the backup domain is powered from VDD; restricted to the LSE function only when powered from VBAT."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "GPIO or LSE (32.768 kHz oscillator) output when the backup domain is powered from VDD; restricted to the LSE function only when powered from VBAT."
      },
      {
        "number": "5",
        "name": "OSC_IN",
        "type": "input",
        "description": "External high-speed oscillator input (4-16 MHz crystal or resonator) that is the default function after reset; can be reconfigured as PD0."
      },
      {
        "number": "6",
        "name": "OSC_OUT",
        "type": "output",
        "description": "External high-speed oscillator output (4-16 MHz crystal or resonator) that is the default function after reset; can be reconfigured as PD1."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "External reset pin; input low level max 0.8 V and input high level min 0.65·VDD, with 330 mV Schmitt hysteresis."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground for the ADC, temperature sensor and PLL analog section; must be connected to VSS."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply for the ADC, temperature sensor and PLL, 2.7 V to 5.5 V without ADC (must equal VDD) or 3.0 V to 5.5 V when the ADC is used; must be connected to VDD."
      },
      {
        "number": "10",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "Analog-capable GPIO that also serves as WKUP wake-up input (rising edge) with ADC_IN0, TIM2_CH1/TIM2_ETR and USART2_CTS."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN1, TIM2_CH2 and USART2_RTS alternate functions."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN2, TIM2_CH3 and USART2_TX alternate functions."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN3, TIM2_CH4 and USART2_RX alternate functions."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN4, SPI1_NSS and USART2_CK alternate functions."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN5 and SPI1_SCK alternate functions."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN6, SPI1_MISO and TIM3_CH1 alternate functions; TIM1_BKIN_1 is available by remap."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN7, SPI1_MOSI and TIM3_CH2 alternate functions; TIM1_CH1N_1 is available by remap."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN8 and TIM3_CH3 alternate functions; TIM1_CH2N_1 is available by remap."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with ADC_IN9 and TIM3_CH4 alternate functions; TIM1_CH3N_1 is available by remap."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "General-purpose I/O that also latches the BOOT1 boot-mode select value."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO with I2C2_SCL and USART3_TX alternate functions; TIM2_CH3_1 is available by remap."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO with I2C2_SDA and USART3_RX alternate functions; TIM2_CH4_1 is available by remap."
      },
      {
        "number": "23",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Digital ground pin for the I/O and core domain."
      },
      {
        "number": "24",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply pin, 2.7 V to 5.5 V, for I/O pins, RC oscillators, reset block and internal regulator."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO with SPI2_NSS, I2C2_SMBAI, USART3_CK and TIM1_BKIN alternate functions."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO with SPI2_SCK, USART3_CTS and TIM1_CH1N alternate functions."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO with SPI2_MISO, USART3_RTS and TIM1_CH2N alternate functions."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "GPIO with SPI2_MOSI and TIM1_CH3N alternate functions."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO with USART1_CK, TIM1_CH1 and MCO clock output alternate functions."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO with USART1_TX and TIM1_CH2 alternate functions."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO with USART1_RX and TIM1_CH3 alternate functions."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with USART1_CTS, USBHDM and TIM1_CH4 alternate functions."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with USART1_RTS, USBHDP and TIM1_ETR alternate functions."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "Default SWDIO serial-wire debug pin after reset on the C8T6 part; can be reconfigured as PA13 by software."
      },
      {
        "number": "35",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Digital ground pin."
      },
      {
        "number": "36",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply pin, 2.7 V to 5.5 V."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "Default SWCLK serial-wire debug clock pin after reset on the C8T6 part; can be reconfigured as PA14 by software."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO with TIM2_CH1_1, TIM2_ETR_1 and SPI1_NSS_1 remapped alternate functions."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO with TIM2_CH2_1 and SPI1_SCK_1 remapped alternate functions."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO with TIM3_CH1_1 and SPI1_MISO_1 remapped alternate functions."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO with I2C1_SMBAI, TIM3_CH2_1 and SPI1_MOSI_1 alternate functions."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with I2C1_SCL and TIM4_CH1 alternate functions; USART1_TX_1 is available by remap."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with I2C1_SDA and TIM4_CH2 alternate functions; USART1_RX_1 is available by remap."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot-mode select input (TTL/CMOS Schmitt level) that, together with BOOT1, selects main flash, system memory or internal SRAM boot at startup."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with TIM4_CH3 alternate function; I2C1_SCL_1 is available by remap."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "Analog-capable GPIO with TIM4_CH4 alternate function; I2C1_SDA_1 is available by remap."
      },
      {
        "number": "47",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Digital ground pin."
      },
      {
        "number": "48",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply pin, 2.7 V to 5.5 V."
      }
    ],
    "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: Pins 5 and 6 are OSC_IN/OSC_OUT by default after reset (remappable to PD0/PD1); the functional name ; Pins 34 (PA13/SWDIO) and 37 (PA14/SWCLK) are debug pins by default after reset on the C8T6; the data; Functions of PC13/PC14/PC15 depend on whether the backup domain is powered from VDD or VBAT, as desc"
        ],
        "pages_sent": 36,
        "cost_usd": 0.1924,
        "at": "2026-10-19T00:41:03"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866790709673984",
        "pages": 36,
        "sha256": "51d2a9f352d2275e",
        "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": "ch32v103c8t6.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch32v103c8t6-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": "9caa0c69521d996e72c5fccc7f6363bc234ebd8101edeca45c4c6e0e6d4e994b",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}