GD32F350CBT6

{
  "slug": "gd32f350cbt6",
  "version": "0.1.0",
  "type": "component",
  "description": "GigaDevice Semicon Beijing 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",
    "gd32f350cbt6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "gd32f350cbt6.kicad_sym",
    "gd32f350cbt6.kicad_mod",
    "gd32f350cbt6.glb",
    "gd32f350cbt6.step",
    "gd32f350cbt6.lbr",
    "docs/hero.png",
    "docs/gd32f350cbt6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "gd32f350cbt6-hero.glb",
    "gd32f350cbt6-hero.overlay.json",
    "gd32f350cbt6-etched.glb"
  ],
  "component": {
    "mpn": "GD32F350CBT6",
    "manufacturer": "GigaDevice Semicon Beijing",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182547869487104",
    "parts": {
      "symbol": "gd32f350cbt6.kicad_sym",
      "footprint": "gd32f350cbt6.kicad_mod",
      "model_3d": "gd32f350cbt6-hero.glb",
      "model_3d_plain": "gd32f350cbt6-etched.glb",
      "model_3d_step": "gd32f350cbt6-etched.step",
      "model_3d_step_plain": "gd32f350cbt6.step",
      "lbr": "gd32f350cbt6.lbr"
    },
    "distributor_links": {
      "lcsc": "C139948"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:03:38Z",
      "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 power supply input, default function VBAT; the pin definition table gives no voltage limits for it."
      },
      {
        "number": "2",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "General-purpose I/O PC13 by default, with additional RTC_TAMP0, RTC_TS, RTC_OUT and WKUP1 functions."
      },
      {
        "number": "3",
        "name": "PC14-OSC32IN",
        "type": "bidirectional",
        "description": "General-purpose I/O PC14 by default, with additional OSC32IN function for the low-speed 32.768 kHz crystal input."
      },
      {
        "number": "4",
        "name": "PC15-OSC32OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O PC15 by default, with additional OSC32OUT function for the low-speed 32.768 kHz crystal output."
      },
      {
        "number": "5",
        "name": "PF0-OSCIN",
        "type": "bidirectional",
        "description": "5 V tolerant I/O PF0 by default, with alternate CTC_SYNC and additional OSCIN high-speed oscillator input function."
      },
      {
        "number": "6",
        "name": "PF1-OSCOUT",
        "type": "bidirectional",
        "description": "5 V tolerant I/O PF1 by default, with additional OSCOUT high-speed oscillator output function."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset pin with default function NRST, listed as I/O in the pin definition table."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin, default function VSSA."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin, default function VDDA; the block diagram shows the DAC powered from VDD/VDDA."
      },
      {
        "number": "10",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "GPIO PA0 with ADC_IN0, CMP0_IM6, RTC_TAMP1 and WKUP0 additional functions, and alternates USART0_CTS, USART1_CTS, TIMER1_CH0, TIMER1_ETI, TSI_G0_IO0, I2C1_SCL and CMP0_OUT."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO PA1 with ADC_IN1 and CMP0_IP additional functions, and alternates USART0_RTS, USART1_RTS, TIMER1_CH1, TSI_G0_IO1, I2C1_SDA and EVENTOUT."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO PA2 with ADC_IN2 and CMP1_IM6 additional functions, and alternates USART0_TX, USART1_TX, TIMER1_CH2, TIMER14_CH0, CMP1_OUT and TSI_G0_IO2."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO PA3 with ADC_IN3 and CMP1_IP additional functions, and alternates USART0_RX, USART1_RX, TIMER1_CH3, TIMER14_CH1 and TSI_G0_IO3."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO PA4 with ADC_IN4, CMP0_IM4, CMP1_IM4 and DAC0_OUT additional functions, and alternates SPI0_NSS/I2S0_WS, USART0_CK, USART1_CK, TIMER13_CH0, TSI_G1_IO0 and SPI1_NSS."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO PA5 with ADC_IN5, CMP0_IM5 and CMP1_IM5 additional functions, and alternates SPI0_SCK/I2S0_CK, CEC, TIMER1_CH0, TIMER1_ETI and TSI_G1_IO1."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO PA6 with ADC_IN6 additional function, and alternates SPI0_MISO/I2S0_MCK, TIMER2_CH0, TIMER0_BKIN, TIMER15_CH0, CMP0_OUT, TSI_G1_IO2 and EVENTOUT."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO PA7 with ADC_IN7 additional function, and alternates SPI0_MOSI/I2S0_SD, TIMER2_CH1, TIMER0_CH0_ON, TIMER13_CH0, TIMER16_CH0, CMP1_OUT, TSI_G1_IO3 and EVENTOUT."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO PB0 with ADC_IN8 additional function, and alternates TIMER2_CH2, TIMER0_CH1_ON, TSI_G2_IO1, USART1_RX and EVENTOUT."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO PB1 with ADC_IN9 additional function, and alternates TIMER2_CH3, TIMER13_CH0, TIMER0_CH2_ON, TSI_G2_IO2 and SPI1_SCK."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB2 with alternate function TSI_G2_IO3."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB10 with alternates I2C0_SCL/I2C1_SCL, CEC, TIMER1_CH2, TSITG and SPI1_IO2."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB11 with alternates I2C0_SDA/I2C1_SDA, TIMER1_CH3, TSI_G5_IO0, EVENTOUT and SPI1_IO3."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, default function VSS."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin, default function VDD; the device operates from a 2.6 to 3.6 V power supply."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB12 with alternates SPI0_NSS/SPI1_NSS, EVENTOUT, TIMER0_BKIN, TSI_G5_IO1 and I2C1_SMBA."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB13 with alternates SPI0_SCK/SPI1_SCK, TIMER0_CH0_ON and TSI_G5_IO2."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB14 with alternates SPI0_MISO/SPI1_MISO, TIMER14_CH0, TIMER0_CH1_ON and TSI_G5_IO3."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB15 with additional RTC_REFIN and WKUP6 functions, and alternates SPI0_MOSI/SPI1_MOSI, TIMER14_CH1, TIMER0_CH2_ON and TIMER14_CH0_ON."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA8 with alternates USART0_CK, TIMER0_CH0, CK_OUT, USART1_TX, EVENTOUT, USBFS_SOF and CTC_SYNC."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA9 with alternates USART0_TX, TIMER0_CH1, TIMER14_BKIN, TSI_G3_IO0, I2C0_SCL and USBFS_VBUS."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA10 with alternates USART0_RX, TIMER0_CH2, TIMER16_BKIN, TSI_G3_IO1, I2C0_SDA and USBFS_ID."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA11 with additional USBFS_DM function, and alternates USART0_CTS, TIMER0_CH3, CMP0_OUT, TSI_G3_IO2, EVENTOUT and SPI1_IO2."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA12 with additional USBFS_DP function, and alternates USART0_RTS, TIMER0_ETI, CMP1_OUT, TSI_G3_IO3, EVENTOUT and SPI1_IO3."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA13 with default SWDIO function, and alternates IFRP_OUT and SPI1_MISO."
      },
      {
        "number": "35",
        "name": "PF6",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PF6 with alternates I2C0_SCL and I2C1_SCL."
      },
      {
        "number": "36",
        "name": "PF7",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PF7 with alternates I2C0_SDA and I2C1_SDA."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA14 with default SWCLK function, and alternates USART0_TX, USART1_TX and SPI1_MOSI."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PA15 with alternates SPI0_NSS/I2S0_WS, USART0_RX, USART1_RX, TIMER1_CH0, TIMER1_ETI, SPI1_NSS and EVENTOUT."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB3 with alternates SPI0_SCK/I2S0_CK, EVENTOUT, TIMER1_CH1 and TSI_G4_IO0."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB4 with alternates SPI0_MISO/I2S0_MCK, TIMER2_CH0, EVENTOUT and TSI_G4_IO1."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB5 with additional WKUP5 function, and alternates SPI0_MOSI/I2S0_SD, I2C0_SMBA, TIMER15_BKIN and TIMER2_CH1."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB6 with alternates I2C0_SCL, USART0_TX, TIMER15_CH0_ON and TSI_G4_IO2."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB7 with alternates I2C0_SDA, USART0_RX, TIMER16_CH0_ON and TSI_G4_IO3."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot mode select input with default function BOOT0."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB8 with alternates I2C0_SCL, CEC, TIMER15_CH0 and TSITG."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant GPIO PB9 with alternates I2C0_SDA, IFRP_OUT, TIMER16_CH0, EVENTOUT and I2S0_MCK."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, default function VSS."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin, default function VDD; the device operates from a 2.6 to 3.6 V power supply."
      }
    ],
    "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: Table 2 footnote 4 says USART1 alternates (marked (4)) apply to GD32F350x8 and x6 only, but Table 3 ; Footnote 3 (USART0/SPI0/I2C0 alternates on GD32F350x4 only) versus footnote 2/4 (x8/x6/xB) applicabi; NRST is printed as I/O in the pin definition table; it is typed bidirectional to match the datasheet"
        ],
        "pages_sent": 25,
        "cost_usd": 0.1488,
        "at": "2026-10-19T05:02:45"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182547869487104",
        "pages": 50,
        "sha256": "afbad49cb5ce969a",
        "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": "gd32f350cbt6.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": "gd32f350cbt6-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": "5048f7a44bf3e4564f6e2fdfb1e959d42dee350e6d5f55dea773065633abef98",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}