STM32F103ZFT6

{
  "slug": "stm32f103zft6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f103zft6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "component": {
    "mpn": "STM32F103ZFT6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-144(20x20)",
    "pin_count": 144,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836025482027008",
    "parts": {
      "symbol": "stm32f103zft6.kicad_sym",
      "footprint": "stm32f103zft6.kicad_mod",
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      "model_3d_step_plain": "stm32f103zft6.step",
      "lbr": "stm32f103zft6.lbr"
    },
    "distributor_links": {
      "lcsc": "C2969780",
      "digikey": "497-11121-ND",
      "mouser": "511-STM32F103ZFT6"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T18:56:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-11121-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM32F103ZFT6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE2, alternate functions TRACECK and FSMC_A23."
      },
      {
        "number": "2",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE3, alternate functions TRACED0 and FSMC_A19."
      },
      {
        "number": "3",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE4, alternate functions TRACED1 and FSMC_A20."
      },
      {
        "number": "4",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE5, alternate functions TRACED2 and FSMC_A21, remap TIM9_CH1."
      },
      {
        "number": "5",
        "name": "PE6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE6, alternate functions TRACED3 and FSMC_A22, remap TIM9_CH2."
      },
      {
        "number": "6",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply for the RTC and backup registers; it also feeds PC13 to PC15 through the power switch."
      },
      {
        "number": "7",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "I/O (no FT); main function PC13 after first backup-domain power-up, alternate TAMPER-RTC; supplied through a power switch sinking only 3 mA, so speed is limited to 2 MHz at 30 pF and it must not source current such as an LED."
      },
      {
        "number": "8",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "I/O (no FT); main function PC14, alternate OSC32_IN; supplied through the 3 mA power switch, so output speed is limited to 2 MHz at 30 pF and it must not source current."
      },
      {
        "number": "9",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "I/O (no FT); main function PC15, alternate OSC32_OUT; supplied through the 3 mA power switch, so output speed is limited to 2 MHz at 30 pF and it must not source current."
      },
      {
        "number": "10",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF0, alternate function FSMC_A0."
      },
      {
        "number": "11",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF1, alternate function FSMC_A1."
      },
      {
        "number": "12",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF2, alternate function FSMC_A2."
      },
      {
        "number": "13",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF3, alternate function FSMC_A3."
      },
      {
        "number": "14",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF4, alternate function FSMC_A4."
      },
      {
        "number": "15",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF5, alternate function FSMC_A5."
      },
      {
        "number": "16",
        "name": "VSS_5",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_5)."
      },
      {
        "number": "17",
        "name": "VDD_5",
        "type": "power_in",
        "description": "Digital supply pin (VDD_5); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "18",
        "name": "PF6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF6, alternate functions ADC3_IN4 and FSMC_NIORD, remap TIM10_CH1."
      },
      {
        "number": "19",
        "name": "PF7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF7, alternate functions ADC3_IN5 and FSMC_NREG, remap TIM11_CH1."
      },
      {
        "number": "20",
        "name": "PF8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF8, alternate functions ADC3_IN6 and FSMC_NIOWR, remap TIM13_CH1."
      },
      {
        "number": "21",
        "name": "PF9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF9, alternate functions ADC3_IN7 and FSMC_CD, remap TIM14_CH1."
      },
      {
        "number": "22",
        "name": "PF10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF10, alternate functions ADC3_IN8 and FSMC_INTR."
      },
      {
        "number": "23",
        "name": "OSC_IN",
        "type": "input",
        "description": "Input of the 4 to 16 MHz high-speed crystal oscillator; PD0 is available separately on pin 114 for this package."
      },
      {
        "number": "24",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Output of the 4 to 16 MHz high-speed crystal oscillator; PD1 is available separately on pin 115 for this package."
      },
      {
        "number": "25",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset pin (NRST), typed I/O in Table 5; its electrical characteristics are given in section 5.3.15."
      },
      {
        "number": "26",
        "name": "PC0",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PC0, alternate function ADC123_IN10."
      },
      {
        "number": "27",
        "name": "PC1",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PC1, alternate function ADC123_IN11."
      },
      {
        "number": "28",
        "name": "PC2",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PC2, alternate function ADC123_IN12."
      },
      {
        "number": "29",
        "name": "PC3",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PC3, alternate function ADC123_IN13."
      },
      {
        "number": "30",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin for the ADC, DAC and other analog blocks (VSSA)."
      },
      {
        "number": "31",
        "name": "VREF-",
        "type": "power_in",
        "description": "Negative reference voltage for the ADC; depending on the package it can be connected internally to VSSA."
      },
      {
        "number": "32",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage for the ADC, 2.4 V to VDDA; depending on the package it can be connected internally to VDDA."
      },
      {
        "number": "33",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin for the ADC and DAC; ADC VDDA range is 2.4 to 3.6 V."
      },
      {
        "number": "34",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA0, alternate functions WKUP, USART2_CTS, ADC123_IN0, TIM2_CH1_ETR, TIM5_CH1 and TIM8_ETR."
      },
      {
        "number": "35",
        "name": "PA1",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA1, alternate functions USART2_RTS, ADC123_IN1, TIM5_CH2 and TIM2_CH2."
      },
      {
        "number": "36",
        "name": "PA2",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA2, alternate functions USART2_TX, TIM5_CH3, ADC123_IN2, TIM9_CH1 and TIM2_CH3."
      },
      {
        "number": "37",
        "name": "PA3",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA3, alternate functions USART2_RX, TIM5_CH4, ADC123_IN3, TIM2_CH4 and TIM9_CH2."
      },
      {
        "number": "38",
        "name": "VSS_4",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_4)."
      },
      {
        "number": "39",
        "name": "VDD_4",
        "type": "power_in",
        "description": "Digital supply pin (VDD_4); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "40",
        "name": "PA4",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA4, alternate functions SPI1_NSS, USART2_CK, DAC_OUT1 and ADC12_IN4."
      },
      {
        "number": "41",
        "name": "PA5",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA5, alternate functions SPI1_SCK, DAC_OUT2 and ADC12_IN5."
      },
      {
        "number": "42",
        "name": "PA6",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA6, alternate functions SPI1_MISO, TIM8_BKIN, ADC12_IN6, TIM3_CH1 and TIM13_CH1, remap TIM1_BKIN."
      },
      {
        "number": "43",
        "name": "PA7",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PA7, alternate functions SPI1_MOSI, TIM8_CH1N, ADC12_IN7, TIM3_CH2 and TIM14_CH1, remap TIM1_CH1N."
      },
      {
        "number": "44",
        "name": "PC4",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PC4, alternate function ADC12_IN14."
      },
      {
        "number": "45",
        "name": "PC5",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PC5, alternate function ADC12_IN15."
      },
      {
        "number": "46",
        "name": "PB0",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PB0, alternate functions ADC12_IN8, TIM3_CH3 and TIM8_CH2N, remap TIM1_CH2N."
      },
      {
        "number": "47",
        "name": "PB1",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PB1, alternate functions ADC12_IN9, TIM3_CH4 and TIM8_CH3N, remap TIM1_CH3N."
      },
      {
        "number": "48",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB2, shared with the BOOT1 pin."
      },
      {
        "number": "49",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF11, alternate function FSMC_NIOS16."
      },
      {
        "number": "50",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF12, alternate function FSMC_A6."
      },
      {
        "number": "51",
        "name": "VSS_6",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_6)."
      },
      {
        "number": "52",
        "name": "VDD_6",
        "type": "power_in",
        "description": "Digital supply pin (VDD_6); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "53",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF13, alternate function FSMC_A7."
      },
      {
        "number": "54",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF14, alternate function FSMC_A8."
      },
      {
        "number": "55",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF15, alternate function FSMC_A9."
      },
      {
        "number": "56",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG0, alternate function FSMC_A10."
      },
      {
        "number": "57",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG1, alternate function FSMC_A11."
      },
      {
        "number": "58",
        "name": "PE7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE7, alternate function FSMC_D4, remap TIM1_ETR."
      },
      {
        "number": "59",
        "name": "PE8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE8, alternate function FSMC_D5, remap TIM1_CH1N."
      },
      {
        "number": "60",
        "name": "PE9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE9, alternate function FSMC_D6, remap TIM1_CH1."
      },
      {
        "number": "61",
        "name": "VSS_7",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_7)."
      },
      {
        "number": "62",
        "name": "VDD_7",
        "type": "power_in",
        "description": "Digital supply pin (VDD_7); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "63",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE10, alternate function FSMC_D7, remap TIM1_CH2N."
      },
      {
        "number": "64",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE11, alternate function FSMC_D8, remap TIM1_CH2."
      },
      {
        "number": "65",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE12, alternate function FSMC_D9, remap TIM1_CH3N."
      },
      {
        "number": "66",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE13, alternate function FSMC_D10, remap TIM1_CH3."
      },
      {
        "number": "67",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE14, alternate function FSMC_D11, remap TIM1_CH4."
      },
      {
        "number": "68",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE15, alternate function FSMC_D12, remap TIM1_BKIN."
      },
      {
        "number": "69",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB10, alternate functions I2C2_SCL and USART3_TX, remap TIM2_CH3."
      },
      {
        "number": "70",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB11, alternate functions I2C2_SDA and USART3_RX, remap TIM2_CH4."
      },
      {
        "number": "71",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_1)."
      },
      {
        "number": "72",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply pin (VDD_1); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "73",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB12, alternate functions SPI2_NSS, I2S2_WS, I2C2_SMBA, USART3_CK and TIM1_BKIN."
      },
      {
        "number": "74",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB13, alternate functions SPI2_SCK, I2S2_CK, USART3_CTS and TIM1_CH1N."
      },
      {
        "number": "75",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB14, alternate functions SPI2_MISO, TIM1_CH2N, USART3_RTS and TIM12_CH1."
      },
      {
        "number": "76",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB15, alternate functions SPI2_MOSI, I2S2_SD, TIM1_CH3N and TIM12_CH2."
      },
      {
        "number": "77",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD8, alternate function FSMC_D13, remap USART3_TX."
      },
      {
        "number": "78",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD9, alternate function FSMC_D14, remap USART3_RX."
      },
      {
        "number": "79",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD10, alternate function FSMC_D15, remap USART3_CK."
      },
      {
        "number": "80",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD11, alternate function FSMC_A16, remap USART3_CTS."
      },
      {
        "number": "81",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD12, alternate function FSMC_A17, remap TIM4_CH1 and USART3_RTS."
      },
      {
        "number": "82",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD13, alternate function FSMC_A18, remap TIM4_CH2."
      },
      {
        "number": "83",
        "name": "VSS_8",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_8)."
      },
      {
        "number": "84",
        "name": "VDD_8",
        "type": "power_in",
        "description": "Digital supply pin (VDD_8); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "85",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD14, alternate function FSMC_D0, remap TIM4_CH3."
      },
      {
        "number": "86",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD15, alternate function FSMC_D1, remap TIM4_CH4."
      },
      {
        "number": "87",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG2, alternate function FSMC_A12."
      },
      {
        "number": "88",
        "name": "PG3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG3, alternate function FSMC_A13."
      },
      {
        "number": "89",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG4, alternate function FSMC_A14."
      },
      {
        "number": "90",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG5, alternate function FSMC_A15."
      },
      {
        "number": "91",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG6, alternate function FSMC_INT2."
      },
      {
        "number": "92",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG7, alternate function FSMC_INT3."
      },
      {
        "number": "93",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG8, no alternate function listed."
      },
      {
        "number": "94",
        "name": "VSS_9",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_9)."
      },
      {
        "number": "95",
        "name": "VDD_9",
        "type": "power_in",
        "description": "Digital supply pin (VDD_9); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "96",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC6, alternate functions I2S2_MCK, TIM8_CH1 and SDIO_D6, remap TIM3_CH1."
      },
      {
        "number": "97",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC7, alternate functions I2S3_MCK, TIM8_CH2 and SDIO_D7, remap TIM3_CH2."
      },
      {
        "number": "98",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC8, alternate functions TIM8_CH3 and SDIO_D0, remap TIM3_CH3."
      },
      {
        "number": "99",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC9, alternate functions TIM8_CH4 and SDIO_D1, remap TIM3_CH4."
      },
      {
        "number": "100",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA8, alternate functions USART1_CK, TIM1_CH1 and MCO."
      },
      {
        "number": "101",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA9, alternate functions USART1_TX and TIM1_CH2."
      },
      {
        "number": "102",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA10, alternate functions USART1_RX and TIM1_CH3."
      },
      {
        "number": "103",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA11, alternate functions USART1_CTS, USB_DM, CAN_RX and TIM1_CH4."
      },
      {
        "number": "104",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA12, alternate functions USART1_RTS, USB_DP, CAN_TX and TIM1_ETR."
      },
      {
        "number": "105",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTMS-SWDIO (serial wire debug data), main function PA13."
      },
      {
        "number": "106",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "107",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_2)."
      },
      {
        "number": "108",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply pin (VDD_2); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "109",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTCK-SWCLK (serial wire clock), main function PA14."
      },
      {
        "number": "110",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTDI, alternate functions SPI3_NSS, I2S3_WS and TIM2_CH1_ETR, remap PA15 and SPI1_NSS."
      },
      {
        "number": "111",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC10, alternate functions UART4_TX and SDIO_D2, remap USART3_TX."
      },
      {
        "number": "112",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC11, alternate functions UART4_RX and SDIO_D3, remap USART3_RX."
      },
      {
        "number": "113",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC12, alternate functions UART5_TX and SDIO_CK, remap USART3_CK."
      },
      {
        "number": "114",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD0, alternate functions FSMC_D2 and CAN_RX; available by default on this package."
      },
      {
        "number": "115",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD1, alternate functions FSMC_D3 and CAN_TX; available by default on this package."
      },
      {
        "number": "116",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD2, alternate functions TIM3_ETR, UART5_RX and SDIO_CMD."
      },
      {
        "number": "117",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD3, alternate functions FSMC_CLK and USART2_CTS."
      },
      {
        "number": "118",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD4, alternate functions FSMC_NOE and USART2_RTS."
      },
      {
        "number": "119",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD5, alternate functions FSMC_NWE and USART2_TX."
      },
      {
        "number": "120",
        "name": "VSS_10",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_10)."
      },
      {
        "number": "121",
        "name": "VDD_10",
        "type": "power_in",
        "description": "Digital supply pin (VDD_10); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "122",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD6, alternate functions FSMC_NWAIT and USART2_RX."
      },
      {
        "number": "123",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD7, alternate functions FSMC_NE1/FSMC_NCE2 and USART2_CK."
      },
      {
        "number": "124",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG9, alternate functions FSMC_NE2/FSMC_NCE3."
      },
      {
        "number": "125",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG10, alternate functions FSMC_NCE4_1/FSMC_NE3."
      },
      {
        "number": "126",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG11, alternate function FSMC_NCE4_2."
      },
      {
        "number": "127",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG12, alternate function FSMC_NE4."
      },
      {
        "number": "128",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG13, alternate function FSMC_A24."
      },
      {
        "number": "129",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG14, alternate function FSMC_A25."
      },
      {
        "number": "130",
        "name": "VSS_11",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_11)."
      },
      {
        "number": "131",
        "name": "VDD_11",
        "type": "power_in",
        "description": "Digital supply pin (VDD_11); application supply and I/Os range 2.0 to 3.6 V."
      },
      {
        "number": "132",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG15, no alternate function listed."
      },
      {
        "number": "133",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTDO, alternate functions SPI3_SCK, I2S3_CK, PB3/TRACESWO, TIM2_CH2 and SPI1_SCK."
      },
      {
        "number": "134",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function NJTRST, alternate functions SPI3_MISO, PB4, TIM3_CH1 and SPI1_MISO."
      },
      {
        "number": "135",
        "name": "PB5",
        "type": "bidirectional",
        "description": "I/O (no FT); default function PB5, alternate functions I2C1_SMBA, SPI3_MOSI and I2S3_SD, with TIM3_CH2 and SPI1_MOSI listed as remap."
      },
      {
        "number": "136",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB6, alternate functions I2C1_SCL and TIM4_CH1, remap USART1_TX."
      },
      {
        "number": "137",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB7, alternate functions I2C1_SDA, FSMC_NADV and TIM4_CH2, remap USART1_RX."
      },
      {
        "number": "138",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot mode selection input BOOT0, typed as input (I) in Table 5."
      },
      {
        "number": "139",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB8, alternate functions TIM4_CH3, SDIO_D4 and TIM10_CH1, remap I2C1_SCL and CAN_RX."
      },
      {
        "number": "140",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB9, alternate functions TIM4_CH4, SDIO_D5 and TIM11_CH1, remap I2C1_SDA and CAN_TX."
      },
      {
        "number": "141",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE0, alternate functions TIM4_ETR and FSMC_NBL0."
      },
      {
        "number": "142",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE1, alternate function FSMC_NBL1."
      },
      {
        "number": "143",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Ground pin for the device (VSS_3)."
      },
      {
        "number": "144",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply pin (VDD_3); application supply and I/Os range 2.0 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-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Figure 4 (LQFP144 pinout drawing, page 26) is unusable as text: the extracted labels are scrambled a; Pin 106 is printed as 'Not connected' in Table 5 and is typed unconnected.; NRST is typed I/O in Table 5, so it is recorded as bidirectional. Confirm against the schematic if a"
        ],
        "pages_sent": 52,
        "cost_usd": 0.3421,
        "at": "2026-10-08T18:55:50"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836025482027008",
        "pages": 136,
        "sha256": "69897f9cf77df3f0",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 144,
        "described": 144,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stm32f103zft6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          22.0,
          22.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b4d698da8bb7697b754adb5655c932342462d9b9341cdaa081b3604dbdf7559b",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32f103zft6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          22.0,
          22.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "310f9d588dd89499746fe84858006c8892af5b53775087563026edabe640264c",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}