CH32L103C8T6

{
  "slug": "ch32l103c8t6",
  "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",
    "ch32l103c8t6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch32l103c8t6.kicad_sym",
    "ch32l103c8t6.kicad_mod",
    "ch32l103c8t6.glb",
    "ch32l103c8t6.step",
    "ch32l103c8t6.lbr",
    "docs/hero.png",
    "docs/ch32l103c8t6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch32l103c8t6-hero.glb",
    "ch32l103c8t6-hero.overlay.json",
    "ch32l103c8t6-etched.glb"
  ],
  "component": {
    "mpn": "CH32L103C8T6",
    "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/8618866707549073408",
    "parts": {
      "symbol": "ch32l103c8t6.kicad_sym",
      "footprint": "ch32l103c8t6.kicad_mod",
      "model_3d": "ch32l103c8t6-hero.glb",
      "model_3d_plain": "ch32l103c8t6-etched.glb",
      "model_3d_step": "ch32l103c8t6-etched.step",
      "model_3d_step_plain": "ch32l103c8t6.step",
      "lbr": "ch32l103c8t6.lbr"
    },
    "distributor_links": {
      "lcsc": "C22398291"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T00:36:35Z",
      "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": "Optional backup supply, 1.8-3.6 V and not higher than VDD, that powers the RTC, LSE and backup registers when VDD is off; keep the VBAT trace as short as possible."
      },
      {
        "number": "2",
        "name": "PC13 (TAMPER-RTC)",
        "type": "bidirectional",
        "description": "Backup-domain I/O: with VDD present it can be a GPIO, TAMPER input, RTC calibration/alarm or second output, but the backup switch supplies only about 3 mA and as an output it is limited to 2 MHz, 30 pF load and cannot drive LEDs."
      },
      {
        "number": "3",
        "name": "PC14 (OSC32_IN)",
        "type": "bidirectional",
        "description": "Backup-domain I/O usable as GPIO or LSE oscillator input (OSC32_IN) when VDD is present; the backup switch supplies only about 3 mA and as an output it is limited to 2 MHz, 30 pF load and cannot drive LEDs."
      },
      {
        "number": "4",
        "name": "PC15 (OSC32_OUT)",
        "type": "bidirectional",
        "description": "Backup-domain I/O usable as GPIO or LSE oscillator output (OSC32_OUT) when VDD is present; the backup switch supplies only about 3 mA and as an output it is limited to 2 MHz, 30 pF load and cannot drive LEDs."
      },
      {
        "number": "5",
        "name": "OSC_IN/PD0",
        "type": "bidirectional",
        "description": "High-speed oscillator input (HSE, 3-25 MHz) that is the default function after reset on this package; software can reconfigure it as PD0 GPIO."
      },
      {
        "number": "6",
        "name": "OSC_OUT/PD1",
        "type": "bidirectional",
        "description": "High-speed oscillator output (HSE) that is the default function after reset on this package; software can reconfigure it as PD1 GPIO."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "input",
        "description": "Active-low external reset input with internal pull-up of 30-50 kΩ (40 kΩ typical); pulses below 100 ns are filtered and pulses above 300 ns are not filtered."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground for the HSI RC oscillator, ADC, temperature sensor and PLL analog section; must be within 50 mV of the other VSS pins."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply of 2.0-3.6 V for the HSI RC oscillator, ADC, temperature sensor and PLL, not higher than VDD in normal operation and at least 2.4 V when the ADC is used."
      },
      {
        "number": "10",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with WKUP wake-up, ADC_IN0 and OPA_P4 functions."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN1, OPA_N4, TIM2_CH2 and USART2_RTS functions."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN2, CMP1_P0, OPA_O2, TIM2_CH3 and USART2_TX functions."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN3, OPA_O0, TIM2_CH4 and USART2_RX functions."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN4, OPA_O3, SPI1_NSS, USART2_CK and TIM2_CH4_7 functions."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN5, SPI1_SCK, OPA_N3, TIM2_CH3_7 and USART1_TX_3 functions."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN6, SPI1_MISO, TIM3_CH1, OPA_N1/OPA_P5 and TIM1_BKIN_1 functions."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN7, SPI1_MOSI, TIM3_CH2, OPA_N5/OPA_P3 and TIM1_CH1N_1 functions."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN8, TIM3_CH3, USART4_TX, CMP1_OUT0 and OPA_P1/OPA_O4 functions."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Analog-capable I/O (not marked 5 V tolerant) with ADC_IN9, TIM3_CH4, USART4_RX, CMP1_N0 and OPA_O1 functions."
      },
      {
        "number": "20",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O whose default function is BOOT1, used together with BOOT0 to select the boot mode at startup, with USART4_CK, CMP1_P1 and LPT_OUT_1 as alternate functions."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with USART3_TX, I2C2_SCL, CMP1_OUT1, CMP3_P1, OPA_N2 and TIM4_CH1_1 functions."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with USART3_RX, I2C2_SDA, CMP2_OUT1, CMP3_N1, OPA_N0 and TIM1_CH1N_2 functions."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground; must be within 50 mV of the other VSS pins."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply of 1.8-3.6 V (3.0 V minimum when USB is used), must be within 50 mV of the other VDD pins and not below VDDA in normal operation."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_BKIN, LPTIM_CH1, USART3_CK, I2C2_SMBA, SPI2_NSS and CMP3_OUT1 functions."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_CH1N, LPTIM_CH2, USART3_CTS and SPI2_SCK functions."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_CH2N, LPTIM_ETR, USART3_RTS, SPI2_MISO and OPA_P2 functions."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_CH3N, LPTIM_OUT, SPI2_MOSI and OPA_P0 functions."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with MCO, TIM1_CH1 and USART1_CK functions."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_CH2 and USART1_TX functions."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_CH3 and USART1_RX functions."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM1_CH4, USART1_CTS, CAN_RX and USB D- (USBDM) functions."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with USART1_RTS, CAN_TX and USB D+ (USBDP) functions."
      },
      {
        "number": "34",
        "name": "PA13/SWDIO",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O whose default function is the serial-wire debug data line SWDIO, with TIM1_ETR_5, USART1_RTS_2 and I2C1_SCL_2 as alternates."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground; must be within 50 mV of the other VSS pins."
      },
      {
        "number": "36",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply of 1.8-3.6 V (3.0 V minimum when USB is used), must be within 50 mV of the other VDD pins."
      },
      {
        "number": "37",
        "name": "PA14/SWCLK",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O whose default function is the serial-wire debug clock SWCLK, with TIM1_CH3_2, TIM1_CH1N_4 and USART1_CTS_4 as alternates."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM2_CH1_ETR_1, SPI1_NSS_1 and USART4_RTS_1 functions."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with analog-capable function, CMP1_N1, CMP2_N0, CMP3_N0, SPI1_SCK_1, TIM2_CH2_1 and USART4_CTS functions."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with analog-capable function, CMP3_OUT0, SPI1_MISO_1, TIM3_CH1_1 and USART4_RTS functions."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with analog-capable function, I2C1_SMBA, CMP2_OUT0, CMP3_P0, LPTIM_CH1_1, TIM3_CH2_1 and USART4_RX_1 functions."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with I2C1_SCL, CC1 (USB Type-C CC1), CMP2_P1, TIM4_CH1, USART1_TX_1 and SPI1_SCK_2 functions."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with I2C1_SDA, CC2 (USB Type-C CC2), CMP2_N1, TIM4_CH2, USART1_RX_1 and SPI1_MOSI_2 functions."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot-mode select input sampled at startup together with BOOT1 to choose main Flash, system memory or SRAM boot."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM4_CH3, CMP2_P0, CAN_RX_2, SPI1_MISO_2, USART1_RTS_3 and TIM1_CH2_4 functions."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with TIM4_CH4, USART1_RX_4, I2C1_SCL_3, CAN_TX_2 and TIM1_CH3N_2 functions."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground; must be within 50 mV of the other VSS pins."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply of 1.8-3.6 V (3.0 V minimum when USB is used), must be within 50 mV of the other VDD pins."
      }
    ],
    "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 pin table is a multi-column layout (F8P6, F8U6, G8R6, K8U6, C8T6). The C8T6 pin numbers were rea; Pins 5 and 6 are noted as OSC_IN/OSC_OUT after reset on C8T6 and can be reconfigured as PD0/PD1 by s; Datasheet gives the NRST filter values (100 ns filterable, 300 ns not filterable) without explicitly"
        ],
        "pages_sent": 48,
        "cost_usd": 0.2542,
        "at": "2026-10-18T00:34:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866707549073408",
        "pages": 57,
        "sha256": "9a3e68ea835863d2",
        "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": "ch32l103c8t6.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch32l103c8t6-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": "8c4b60e892b7c4874d30397ee68fa6b8320c8887203ca8554066c073a9f3bf3e",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}