STM32F103CBT7

{
  "slug": "stm32f103cbt7",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f103cbt7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32f103cbt7.kicad_sym",
    "stm32f103cbt7.kicad_mod",
    "stm32f103cbt7.glb",
    "stm32f103cbt7.step",
    "stm32f103cbt7.lbr",
    "docs/hero.png",
    "docs/stm32f103cbt7-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "STM32F103CBT7",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924157480341504",
    "parts": {
      "symbol": "stm32f103cbt7.kicad_sym",
      "footprint": "stm32f103cbt7.kicad_mod",
      "model_3d": "stm32f103cbt7-etched.glb",
      "model_3d_plain": "stm32f103cbt7.glb",
      "model_3d_step": "stm32f103cbt7-etched.step",
      "model_3d_step_plain": "stm32f103cbt7.step",
      "lbr": "stm32f103cbt7.lbr"
    },
    "distributor_links": {
      "lcsc": "C1338636",
      "digikey": "497-11518-ND",
      "mouser": "511-STM32F103CBT7"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T15:50:18Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-11518-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F103CBT7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup supply for RTC and backup registers, 1.8 to 3.6 V"
      },
      {
        "number": "2",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "General-purpose I/O port on backup domain or tamper alarm input"
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "32 kHz oscillator input on backup domain"
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "32 kHz oscillator output on backup domain"
      },
      {
        "number": "5",
        "name": "OSC_IN",
        "type": "input",
        "description": "Main oscillator input for external high-speed crystal, 4 to 16 MHz"
      },
      {
        "number": "6",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Main oscillator output for external high-speed crystal"
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "External reset pin with internal pull-up, active low"
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground"
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply, 1.8 to 3.6 V"
      },
      {
        "number": "10",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "General-purpose I/O port with external wakeup capability"
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports USART2_RTS, ADC12_IN1, TIM2_CH2"
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports USART2_TX, ADC12_IN2, TIM2_CH3"
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports USART2_RX, ADC12_IN3, TIM2_CH4"
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports SPI1_NSS, USART2_CK, ADC12_IN4"
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports SPI1_SCK, ADC12_IN5"
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports SPI1_MISO, ADC12_IN6, TIM3_CH1"
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports SPI1_MOSI, ADC12_IN7, TIM3_CH2"
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports ADC12_IN8, TIM3_CH3"
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports ADC12_IN9, TIM3_CH4"
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "General-purpose I/O port, BOOT1 configuration pin"
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports I2C2_SCL, USART3_TX"
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports I2C2_SDA, USART3_RX"
      },
      {
        "number": "23",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Ground"
      },
      {
        "number": "24",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Main power supply, 1.8 to 3.6 V"
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports SPI2_NSS, I2C2_SMBAI, USART3_CK"
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports SPI2_SCK, USART3_CTS"
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports SPI2_MISO, USART3_RTS"
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports SPI2_MOSI"
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports USART1_CK, TIM1_CH1, MCO"
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports USART1_TX, TIM1_CH2"
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports USART1_RX, TIM1_CH3"
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports USART1_CTS, CAN_RX, USB_DM, TIM1_CH4"
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports USART1_RTS, CAN_TX, USB_DP, TIM1_ETR"
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port or JTMS/SWDIO debug port"
      },
      {
        "number": "35",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Ground"
      },
      {
        "number": "36",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Main power supply, 1.8 to 3.6 V"
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port or JTCK/SWCLK debug port"
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port or JTDI debug port, remappable to TIM2_CH1_ETR or SPI1_NSS"
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port or JTDO/TRACESWO debug port, remappable to TIM2_CH2 or SPI1_SCK"
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port or JNTRST debug port, remappable to TIM3_CH1 or SPI1_MISO"
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "General-purpose I/O port, supports I2C1_SMBA, remappable to TIM3_CH2 or SPI1_MOSI"
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports I2C1_SCL, remappable to TIM4_CH1 or USART1_TX"
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports I2C1_SDA, remappable to TIM4_CH2 or USART1_RX"
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot configuration pin, sampled at reset to select boot mode"
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports TIM4_CH3, remappable to I2C1_SCL or CAN_RX"
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant general-purpose I/O port, supports TIM4_CH4, remappable to I2C1_SDA or CAN_TX"
      },
      {
        "number": "47",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Ground"
      },
      {
        "number": "48",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Main power supply, 1.8 to 3.6 V"
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Oscillator pins 5 and 6 marked as OSC_IN/OSC_OUT can be remapped to PD0/PD1 functionality; default f; PC13-PC15 pins (2-4) are supplied through power switch with limited current (3 mA max); speed should; PA13, PA14, PA15, PB3, PB4 (34, 37-40) are shared with JTAG/SWD debug interface pins; debug port fun",
          "20/48 pins cited to the wrong page (name found elsewhere): ['29:PA8@p28', '30:PA9@p28', '31:PA10@p28', '32:PA11@p28']"
        ],
        "pages_sent": 66,
        "cost_usd": 0.4837,
        "at": "2026-10-01T15:49:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924157480341504",
        "pages": 117,
        "sha256": "4741c03c5793745c",
        "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"
    }
  }
}