ch32v203c8t6

{
  "slug": "ch32v203c8t6",
  "version": "0.1.0",
  "type": "component",
  "description": "WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "mcu",
    "ch32v203c8t6"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch32v203c8t6.kicad_sym",
    "ch32v203c8t6.kicad_mod",
    "ch32v203c8t6.glb",
    "ch32v203c8t6.step",
    "ch32v203c8t6.lbr",
    "docs/hero.png",
    "docs/ch32v203c8t6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray"
  },
  "component": {
    "mpn": "CH32V203C8T6",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Microcontrollers (MCU/MPU/SOC)",
    "parts": {
      "symbol": "ch32v203c8t6.kicad_sym",
      "footprint": "ch32v203c8t6.kicad_mod",
      "model_3d": "ch32v203c8t6-etched.glb",
      "model_3d_plain": "ch32v203c8t6.glb",
      "model_3d_step": "ch32v203c8t6-etched.step",
      "model_3d_step_plain": "ch32v203c8t6.step",
      "lbr": "ch32v203c8t6.lbr"
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply input, 1.8-3.6 V. Powers RTC, external LSE oscillator and backup registers when VDD is off; can be tied to VDD if backup domain isn't used."
      },
      {
        "number": "2",
        "name": "PC13/TAMPER-RTC",
        "type": "bidirectional",
        "description": "General-purpose I/O in the backup domain. Default alternate function TAMPER-RTC (intrusion detect / RTC alarm / seconds output). 2 MHz max, 30 pF max load; cannot source current (no LED drive)."
      },
      {
        "number": "3",
        "name": "PC14/OSC32_IN",
        "type": "bidirectional",
        "description": "General-purpose I/O or LSE 32.768 kHz crystal input (OSC32_IN). Backup-domain pin, 2 MHz max GPIO. When VBAT-only, dedicated to LSE."
      },
      {
        "number": "4",
        "name": "PC15/OSC32_OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O or LSE 32.768 kHz crystal output (OSC32_OUT). Backup-domain pin, 2 MHz max GPIO. When VBAT-only, dedicated to LSE."
      },
      {
        "number": "5",
        "name": "OSC_IN/PD0",
        "type": "bidirectional",
        "description": "HSE crystal input (OSC_IN) by default after reset; can be remapped to GPIO PD0. Accepts 3-25 MHz crystal/oscillator."
      },
      {
        "number": "6",
        "name": "OSC_OUT/PD1",
        "type": "bidirectional",
        "description": "HSE crystal output (OSC_OUT) by default after reset; can be remapped to GPIO PD1."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "input",
        "description": "Active-low external reset input (TTL Schmitt). Bidirectional in some MCUs of this family but declared as I here; internal reset pulse ~24-30 ms at power-on."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground reference for ADC, temperature sensor, PLL, OPA and internal HSI. Tie to VSS at a single point."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply, 2.4-3.6 V (≥3.0 V if ADC is used; ≥2.4 V required for ADC operation). Must equal VIO/VDD; decouple with 0.1 µF to VSSA."
      },
      {
        "number": "10",
        "name": "PA0/WKUP",
        "type": "bidirectional",
        "description": "GPIO PA0, also standby WKUP input, ADC_IN0, TIM2_CH1/ETR, TIM5_CH1 and USART2_CTS alternate functions."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO PA1; alt ADC_IN1, TIM2_CH2, TIM5_CH2, USART2_RTS."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO PA2; alt ADC_IN2, TIM2_CH3, USART2_TX, OPA2_OUT0."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO PA3; alt ADC_IN3, TIM2_CH4, USART2_RX, OPA1_OUT0."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO PA4; alt ADC_IN4, SPI1_NSS, USART2_CK, OPA2_OUT1."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO PA5; alt ADC_IN5, SPI1_SCK, USART4_TX(remap), OPA2_CH1N."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO PA6; alt ADC_IN6, SPI1_MISO, TIM3_CH1, TIM1_BKIN(remap), USART4_CK(remap), OPA1_CH1N."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO PA7; alt ADC_IN7, SPI1_MOSI, TIM3_CH2, TIM1_CH1N(remap), USART4_CTS(remap), OPA2_CH1P."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO PB0; alt ADC_IN8, TIM3_CH3, TIM1_CH2N(remap), USART4_TX, OPA1_CH1P."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO PB1; alt ADC_IN9, TIM3_CH4, TIM1_CH3N(remap), USART4_RX, OPA1_OUT1."
      },
      {
        "number": "20",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "GPIO PB2 (FT, 5 V tolerant), also BOOT1 boot-mode select strap sampled at reset. Alternate USART4_CK."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO PB10 (FT); alt I2C2_SCL, USART3_TX, TIM2_CH3(remap), OPA2_CH0N."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO PB11 (FT); alt I2C2_SDA, USART3_RX, TIM2_CH4(remap), OPA1_CH0N."
      },
      {
        "number": "23",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Digital ground for I/O bank 1. Tie all VSS pins to system ground."
      },
      {
        "number": "24",
        "name": "VDD_VIO_1",
        "type": "power_in",
        "description": "I/O supply for GPIO bank 1, 2.4-3.6 V (3.0-3.6 V if USB used). Must not exceed VDD."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO PB12 (FT); alt SPI2_NSS, I2C2_SMBA, USART3_CK, TIM1_BKIN."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO PB13 (FT); alt SPI2_SCK, USART3_CTS, TIM1_CH1N."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO PB14 (FT); alt SPI2_MISO, USART3_RTS, TIM1_CH2N, OPA2_CH0P."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "GPIO PB15 (FT); alt SPI2_MOSI, TIM1_CH3N, OPA1_CH0P."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO PA8 (FT); alt USART1_CK, TIM1_CH1, MCO (master clock output)."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO PA9 (FT); alt USART1_TX, TIM1_CH2."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO PA10 (FT); alt USART1_RX, TIM1_CH3."
      },
      {
        "number": "32",
        "name": "PA11/USBDM",
        "type": "bidirectional",
        "description": "USB2.0 full-speed D− (USBDM) by default; also GPIO PA11 (FT), USART1_CTS, TIM1_CH4, CAN1_RX."
      },
      {
        "number": "33",
        "name": "PA12/USBDP",
        "type": "bidirectional",
        "description": "USB2.0 full-speed D+ (USBDP) by default; also GPIO PA12 (FT), USART1_RTS, TIM1_ETR, CAN1_TX."
      },
      {
        "number": "34",
        "name": "PA13/SWDIO",
        "type": "bidirectional",
        "description": "2-wire serial debug data line (SWDIO) after reset; also GPIO PA13 (FT). SDI can be turned off in software to free the pin."
      },
      {
        "number": "35",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Digital ground (bank 2). Tie to VSS."
      },
      {
        "number": "36",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital core/IO supply (bank 2), 2.4-3.6 V (3.0-3.6 V for USB)."
      },
      {
        "number": "37",
        "name": "PA14/SWCLK",
        "type": "bidirectional",
        "description": "2-wire serial debug clock (SWCLK) after reset; also GPIO PA14 (FT)."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO PA15 (FT); alt TIM2_CH1/ETR(remap), SPI1_NSS(remap), USART4_RTS(remap)."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO PB3 (FT); alt TIM2_CH2, USART4_CTS, SPI1_SCK(remap)."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO PB4 (FT); alt TIM3_CH1(remap), USART4_RTS, SPI1_MISO(remap)."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO PB5 (FT, NOT 5 V-tolerant on some functions); alt I2C1_SMBA, TIM3_CH2(remap), SPI1_MOSI(remap), USART4_RX(remap)."
      },
      {
        "number": "42",
        "name": "PB6/USBFS_DM",
        "type": "bidirectional",
        "description": "GPIO PB6 (FT); alt I2C1_SCL, TIM4_CH1, USART1_TX(remap), USBFS_DM (second USB FS host/device D−)."
      },
      {
        "number": "43",
        "name": "PB7/USBFS_DP",
        "type": "bidirectional",
        "description": "GPIO PB7 (FT); alt I2C1_SDA, TIM4_CH2, USART1_RX(remap), USBFS_DP (second USB FS host/device D+)."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot-mode select strap sampled at reset; together with BOOT1/PB2 chooses boot source (main Flash / system memory bootloader / SRAM). Should not be left floating."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO PB8 (FT); alt TIM4_CH3, I2C1_SCL(remap), CAN1_RX(remap)."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO PB9 (FT); alt TIM4_CH4, I2C1_SDA(remap), CAN1_TX(remap)."
      },
      {
        "number": "47",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Digital ground (bank 3). Tie to VSS."
      },
      {
        "number": "48",
        "name": "VDD_VIO_3",
        "type": "power_in",
        "description": "I/O supply for GPIO bank 3, 2.4-3.6 V (3.0-3.6 V for USB). Must not exceed VDD."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "lcsc": "C3001172",
      "digikey": false,
      "mouser": false
    },
    "distributor_check": {
      "checked_at": "2026-10-05T18:55:39Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "models_3d": [
      {
        "file": "ch32v203c8t6.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch32v203c8t6-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": "8df71583e04b6845aa88b1f6b29cc5f8ad77e1c599e38157f54bc6fa88394464",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}