STM32F103ZDT6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f103zdt6",
  "title": "STM32F103ZDT6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f103zdt6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32F103ZDT6",
    "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/8586181455211081728",
    "parts": {
      "symbol": "stm32f103zdt6.kicad_sym",
      "footprint": "stm32f103zdt6.kicad_mod",
      "model_3d": "stm32f103zdt6-hero.glb",
      "model_3d_plain": "stm32f103zdt6.glb",
      "model_3d_step": "stm32f103zdt6-etched.step",
      "model_3d_step_plain": "stm32f103zdt6.step",
      "lbr": "stm32f103zdt6.lbr"
    },
    "distributor_links": {
      "lcsc": "C8302",
      "digikey": "497-STM32F103ZDT6-ND",
      "mouser": "511-STM32F103ZDT6"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T13:40:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32F103ZDT6-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM32F103ZDT6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE2",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE2, alternates TRACECK and FSMC_A23."
      },
      {
        "number": "2",
        "name": "PE3",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE3, alternates TRACED0 and FSMC_A19."
      },
      {
        "number": "3",
        "name": "PE4",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE4, alternates TRACED1 and FSMC_A20."
      },
      {
        "number": "4",
        "name": "PE5",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE5, alternates TRACED2 and FSMC_A21."
      },
      {
        "number": "5",
        "name": "PE6",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE6, alternates TRACED3 and FSMC_A22."
      },
      {
        "number": "6",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply for the RTC and backup registers."
      },
      {
        "number": "7",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "I/O supplied through the power switch, which sinks at most 3 mA, so output use is limited to 2 MHz with 30 pF maximum load and the pin must not source current such as driving an LED (note 5); alternate function TAMPER-RTC."
      },
      {
        "number": "8",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "I/O supplied through the power switch, limited to 3 mA sink, 2 MHz at 30 pF maximum load and not usable as a current source (note 5); alternate function OSC32_IN."
      },
      {
        "number": "9",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "I/O supplied through the power switch, limited to 3 mA sink, 2 MHz at 30 pF maximum load and not usable as a current source (note 5); alternate function OSC32_OUT."
      },
      {
        "number": "10",
        "name": "PF0",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF0, alternate FSMC_A0."
      },
      {
        "number": "11",
        "name": "PF1",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF1, alternate FSMC_A1."
      },
      {
        "number": "12",
        "name": "PF2",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF2, alternate FSMC_A2."
      },
      {
        "number": "13",
        "name": "PF3",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF3, alternate FSMC_A3."
      },
      {
        "number": "14",
        "name": "PF4",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF4, alternate FSMC_A4."
      },
      {
        "number": "15",
        "name": "PF5",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF5, alternate FSMC_A5."
      },
      {
        "number": "16",
        "name": "VSS_5",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "17",
        "name": "VDD_5",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "18",
        "name": "PF6",
        "type": "bidirectional",
        "description": "I/O (not marked 5 V tolerant in the table); default function PF6, alternates ADC3_IN4 and FSMC_NIORD."
      },
      {
        "number": "19",
        "name": "PF7",
        "type": "bidirectional",
        "description": "I/O (not marked 5 V tolerant in the table); default function PF7, alternates ADC3_IN5 and FSMC_NREG."
      },
      {
        "number": "20",
        "name": "PF8",
        "type": "bidirectional",
        "description": "I/O (not marked 5 V tolerant in the table); default function PF8, alternates ADC3_IN6 and FSMC_NIOWR."
      },
      {
        "number": "21",
        "name": "PF9",
        "type": "bidirectional",
        "description": "I/O (not marked 5 V tolerant in the table); default function PF9, alternates ADC3_IN7 and FSMC_CD."
      },
      {
        "number": "22",
        "name": "PF10",
        "type": "bidirectional",
        "description": "I/O (not marked 5 V tolerant in the table); default function PF10, alternates ADC3_IN8 and FSMC_INTR."
      },
      {
        "number": "23",
        "name": "OSC_IN",
        "type": "input",
        "description": "Input of the 4-to-16 MHz high-speed external crystal oscillator (HSE)."
      },
      {
        "number": "24",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Output of the 4-to-16 MHz high-speed external crystal oscillator (HSE)."
      },
      {
        "number": "25",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Active-low reset pin; its characteristics are given in Section 5.3.15 (NRST pin characteristics)."
      },
      {
        "number": "26",
        "name": "PC0",
        "type": "bidirectional",
        "description": "I/O; default function PC0, alternate ADC123_IN10 analog input."
      },
      {
        "number": "27",
        "name": "PC1",
        "type": "bidirectional",
        "description": "I/O; default function PC1, alternate ADC123_IN11 analog input."
      },
      {
        "number": "28",
        "name": "PC2",
        "type": "bidirectional",
        "description": "I/O; default function PC2, alternate ADC123_IN12 analog input."
      },
      {
        "number": "29",
        "name": "PC3",
        "type": "bidirectional",
        "description": "I/O; default function PC3, alternate ADC123_IN13 analog input."
      },
      {
        "number": "30",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground reference for the ADC and reference section."
      },
      {
        "number": "31",
        "name": "VREF-",
        "type": "power_in",
        "description": "Negative ADC reference voltage; can be internally connected to VSSA depending on package (Table 59 note 3)."
      },
      {
        "number": "32",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive ADC reference voltage, 2.4 V to VDDA; can be internally connected to VDDA depending on package (Table 59)."
      },
      {
        "number": "33",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply for the ADC, 2.4 V to 3.6 V (Table 59)."
      },
      {
        "number": "34",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "I/O; default function PA0 with wake-up input WKUP, alternates USART2_CTS, ADC123_IN0, TIM2_CH1_ETR and TIM5_CH1/TIM8_ETR."
      },
      {
        "number": "35",
        "name": "PA1",
        "type": "bidirectional",
        "description": "I/O; default function PA1, alternates USART2_RTS, ADC123_IN1, TIM5_CH2 and TIM2_CH2."
      },
      {
        "number": "36",
        "name": "PA2",
        "type": "bidirectional",
        "description": "I/O; default function PA2, alternates USART2_TX, TIM5_CH3, ADC123_IN2 and TIM2_CH3."
      },
      {
        "number": "37",
        "name": "PA3",
        "type": "bidirectional",
        "description": "I/O; default function PA3, alternates USART2_RX, TIM5_CH4, ADC123_IN3 and TIM2_CH4."
      },
      {
        "number": "38",
        "name": "VSS_4",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "39",
        "name": "VDD_4",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "40",
        "name": "PA4",
        "type": "bidirectional",
        "description": "I/O; default function PA4, alternates SPI1_NSS, USART2_CK, DAC_OUT1 and ADC12_IN4."
      },
      {
        "number": "41",
        "name": "PA5",
        "type": "bidirectional",
        "description": "I/O; default function PA5, alternates SPI1_SCK, DAC_OUT2 and ADC12_IN5."
      },
      {
        "number": "42",
        "name": "PA6",
        "type": "bidirectional",
        "description": "I/O; default function PA6, alternates SPI1_MISO, TIM8_BKIN, ADC12_IN6, TIM3_CH1 and TIM1_BKIN."
      },
      {
        "number": "43",
        "name": "PA7",
        "type": "bidirectional",
        "description": "I/O; default function PA7, alternates SPI1_MOSI, TIM8_CH1N, ADC12_IN7, TIM3_CH2 and TIM1_CH1N."
      },
      {
        "number": "44",
        "name": "PC4",
        "type": "bidirectional",
        "description": "I/O; default function PC4, alternate ADC12_IN14 analog input."
      },
      {
        "number": "45",
        "name": "PC5",
        "type": "bidirectional",
        "description": "I/O; default function PC5, alternate ADC12_IN15 analog input."
      },
      {
        "number": "46",
        "name": "PB0",
        "type": "bidirectional",
        "description": "I/O; default function PB0, alternates ADC12_IN8, TIM3_CH3, TIM8_CH2N and TIM1_CH2N."
      },
      {
        "number": "47",
        "name": "PB1",
        "type": "bidirectional",
        "description": "I/O; default function PB1, alternates ADC12_IN9, TIM3_CH4, TIM8_CH3N and TIM1_CH3N."
      },
      {
        "number": "48",
        "name": "PB2",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB2/BOOT1."
      },
      {
        "number": "49",
        "name": "PF11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF11, alternate FSMC_NIOS16."
      },
      {
        "number": "50",
        "name": "PF12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF12, alternate FSMC_A6."
      },
      {
        "number": "51",
        "name": "VSS_6",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "52",
        "name": "VDD_6",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "53",
        "name": "PF13",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF13, alternate FSMC_A7."
      },
      {
        "number": "54",
        "name": "PF14",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF14, alternate FSMC_A8."
      },
      {
        "number": "55",
        "name": "PF15",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PF15, alternate FSMC_A9."
      },
      {
        "number": "56",
        "name": "PG0",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG0, alternate FSMC_A10."
      },
      {
        "number": "57",
        "name": "PG1",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG1, alternate FSMC_A11."
      },
      {
        "number": "58",
        "name": "PE7",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE7, alternates FSMC_D4 and TIM1_ETR."
      },
      {
        "number": "59",
        "name": "PE8",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE8, alternates FSMC_D5 and TIM1_CH1N."
      },
      {
        "number": "60",
        "name": "PE9",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE9, alternates FSMC_D6 and TIM1_CH1."
      },
      {
        "number": "61",
        "name": "VSS_7",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "62",
        "name": "VDD_7",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "63",
        "name": "PE10",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE10, alternates FSMC_D7 and TIM1_CH2N."
      },
      {
        "number": "64",
        "name": "PE11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE11, alternates FSMC_D8 and TIM1_CH2."
      },
      {
        "number": "65",
        "name": "PE12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE12, alternates FSMC_D9 and TIM1_CH3N."
      },
      {
        "number": "66",
        "name": "PE13",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE13, alternates FSMC_D10 and TIM1_CH3."
      },
      {
        "number": "67",
        "name": "PE14",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE14, alternates FSMC_D11 and TIM1_CH4."
      },
      {
        "number": "68",
        "name": "PE15",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE15, alternates FSMC_D12 and TIM1_BKIN."
      },
      {
        "number": "69",
        "name": "PB10",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB10, alternates I2C2_SCL, USART3_TX and TIM2_CH3."
      },
      {
        "number": "70",
        "name": "PB11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB11, alternates I2C2_SDA, USART3_RX and TIM2_CH4."
      },
      {
        "number": "71",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "72",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "73",
        "name": "PB12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB12, alternates SPI2_NSS, I2S2_WS, I2C2_SMBA, USART3_CK and TIM1_BKIN."
      },
      {
        "number": "74",
        "name": "PB13",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB13, alternates SPI2_SCK, I2S2_CK, USART3_CTS and TIM1_CH1N."
      },
      {
        "number": "75",
        "name": "PB14",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB14, alternates SPI2_MISO, TIM1_CH2N and USART3_RTS."
      },
      {
        "number": "76",
        "name": "PB15",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB15, alternates SPI2_MOSI, I2S2_SD and TIM1_CH3N."
      },
      {
        "number": "77",
        "name": "PD8",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD8, alternates FSMC_D13 and USART3_TX."
      },
      {
        "number": "78",
        "name": "PD9",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD9, alternates FSMC_D14 and USART3_RX."
      },
      {
        "number": "79",
        "name": "PD10",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD10, alternates FSMC_D15 and USART3_CK."
      },
      {
        "number": "80",
        "name": "PD11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD11, alternates FSMC_A16 and USART3_CTS."
      },
      {
        "number": "81",
        "name": "PD12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD12, alternates FSMC_A17, TIM4_CH1 and USART3_RTS."
      },
      {
        "number": "82",
        "name": "PD13",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD13, alternates FSMC_A18 and TIM4_CH2."
      },
      {
        "number": "83",
        "name": "VSS_8",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "84",
        "name": "VDD_8",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "85",
        "name": "PD14",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD14, alternates FSMC_D0 and TIM4_CH3."
      },
      {
        "number": "86",
        "name": "PD15",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD15, alternates FSMC_D1 and TIM4_CH4."
      },
      {
        "number": "87",
        "name": "PG2",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG2, alternate FSMC_A12."
      },
      {
        "number": "88",
        "name": "PG3",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG3, alternate FSMC_A13."
      },
      {
        "number": "89",
        "name": "PG4",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG4, alternate FSMC_A14."
      },
      {
        "number": "90",
        "name": "PG5",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG5, alternate FSMC_A15."
      },
      {
        "number": "91",
        "name": "PG6",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG6, alternate FSMC_INT2."
      },
      {
        "number": "92",
        "name": "PG7",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG7, alternate FSMC_INT3."
      },
      {
        "number": "93",
        "name": "PG8",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG8, no alternate function listed in the table."
      },
      {
        "number": "94",
        "name": "VSS_9",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "95",
        "name": "VDD_9",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "96",
        "name": "PC6",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC6, alternates I2S2_MCK, TIM8_CH1, SDIO_D6 and TIM3_CH1."
      },
      {
        "number": "97",
        "name": "PC7",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC7, alternates I2S3_MCK, TIM8_CH2, SDIO_D7 and TIM3_CH2."
      },
      {
        "number": "98",
        "name": "PC8",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC8, alternates TIM8_CH3, SDIO_D0 and TIM3_CH3."
      },
      {
        "number": "99",
        "name": "PC9",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC9, alternates TIM8_CH4, SDIO_D1 and TIM3_CH4."
      },
      {
        "number": "100",
        "name": "PA8",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PA8, alternates USART1_CK, TIM1_CH1 and MCO."
      },
      {
        "number": "101",
        "name": "PA9",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PA9, alternates USART1_TX and TIM1_CH2."
      },
      {
        "number": "102",
        "name": "PA10",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PA10, alternates USART1_RX and TIM1_CH3."
      },
      {
        "number": "103",
        "name": "PA11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PA11, alternates USART1_CTS, USBDM, CAN_RX and TIM1_CH4."
      },
      {
        "number": "104",
        "name": "PA12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PA12, alternates USART1_RTS, USBDP, CAN_TX and TIM1_ETR."
      },
      {
        "number": "105",
        "name": "PA13",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function JTMS-SWDIO (serial wire debug data)."
      },
      {
        "number": "106",
        "name": "NC",
        "type": "unconnected",
        "description": "Marked 'Not connected' in the LQFP144 pin definition column."
      },
      {
        "number": "107",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "108",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "109",
        "name": "PA14",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function JTCK-SWCLK (serial wire debug clock)."
      },
      {
        "number": "110",
        "name": "PA15",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function JTDI, alternates SPI3_NSS, I2S3_WS, TIM2_CH1_ETR and SPI1_NSS (PA15 remap)."
      },
      {
        "number": "111",
        "name": "PC10",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC10, alternates UART4_TX, SDIO_D2 and USART3_TX."
      },
      {
        "number": "112",
        "name": "PC11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC11, alternates UART4_RX, SDIO_D3 and USART3_RX."
      },
      {
        "number": "113",
        "name": "PC12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PC12, alternates UART5_TX, SDIO_CK and USART3_CK."
      },
      {
        "number": "114",
        "name": "PD0",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); on LQFP144 PD0 is available by default with no remap needed (note 9), alternates FSMC_D2 and CAN_RX."
      },
      {
        "number": "115",
        "name": "PD1",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); on LQFP144 PD1 is available by default with no remap needed (note 9), alternates FSMC_D3 and CAN_TX."
      },
      {
        "number": "116",
        "name": "PD2",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD2, alternates TIM3_ETR, UART5_RX and SDIO_CMD."
      },
      {
        "number": "117",
        "name": "PD3",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD3, alternates FSMC_CLK and USART2_CTS."
      },
      {
        "number": "118",
        "name": "PD4",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD4, alternates FSMC_NOE and USART2_RTS."
      },
      {
        "number": "119",
        "name": "PD5",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD5, alternates FSMC_NWE and USART2_TX."
      },
      {
        "number": "120",
        "name": "VSS_10",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "121",
        "name": "VDD_10",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "122",
        "name": "PD6",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD6, alternates FSMC_NWAIT and USART2_RX."
      },
      {
        "number": "123",
        "name": "PD7",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PD7, alternates FSMC_NE1/FSMC_NCE2 and USART2_CK."
      },
      {
        "number": "124",
        "name": "PG9",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG9, alternate FSMC_NE2/FSMC_NCE3."
      },
      {
        "number": "125",
        "name": "PG10",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG10, alternates FSMC_NCE4_1/FSMC_NE3."
      },
      {
        "number": "126",
        "name": "PG11",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG11, alternate FSMC_NCE4_2."
      },
      {
        "number": "127",
        "name": "PG12",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG12, alternate FSMC_NE4."
      },
      {
        "number": "128",
        "name": "PG13",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG13, alternate FSMC_A24."
      },
      {
        "number": "129",
        "name": "PG14",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG14, alternate FSMC_A25."
      },
      {
        "number": "130",
        "name": "VSS_11",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "131",
        "name": "VDD_11",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply range 2.0 to 3.6 V."
      },
      {
        "number": "132",
        "name": "PG15",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PG15, no alternate function listed in the table."
      },
      {
        "number": "133",
        "name": "PB3",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function JTDO, alternates SPI3_SCK, I2S3_CK, TRACESWO, TIM2_CH2 and SPI1_SCK."
      },
      {
        "number": "134",
        "name": "PB4",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function NJTRST, alternates SPI3_MISO, TIM3_CH1 and SPI1_MISO."
      },
      {
        "number": "135",
        "name": "PB5",
        "type": "bidirectional",
        "description": "I/O (not marked 5 V tolerant in the table); default function PB5, alternates I2C1_SMBA, SPI3_MOSI, I2S3_SD, TIM3_CH2 and SPI1_MOSI."
      },
      {
        "number": "136",
        "name": "PB6",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB6, alternates I2C1_SCL, TIM4_CH1 and USART1_TX."
      },
      {
        "number": "137",
        "name": "PB7",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB7, alternates I2C1_SDA, FSMC_NADV, TIM4_CH2 and USART1_RX."
      },
      {
        "number": "138",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot-mode selection input; the boot mode behaviour is described in the Boot modes section (2.3.10)."
      },
      {
        "number": "139",
        "name": "PB8",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB8, alternates TIM4_CH3, SDIO_D4, I2C1_SCL and CAN_RX."
      },
      {
        "number": "140",
        "name": "PB9",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PB9, alternates TIM4_CH4, SDIO_D5, I2C1_SDA and CAN_TX."
      },
      {
        "number": "141",
        "name": "PE0",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE0, alternates TIM4_ETR and FSMC_NBL0."
      },
      {
        "number": "142",
        "name": "PE1",
        "type": "bidirectional",
        "description": "I/O, 5 V tolerant (FT); default function PE1, alternate FSMC_NBL1."
      },
      {
        "number": "143",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "144",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply for I/Os and core; application supply 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": [
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        ],
        "pages_sent": 44,
        "cost_usd": 0.3343,
        "at": "2026-10-11T13:40:08"
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      "datasheet": {
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        "pages": 130,
        "sha256": "6cc345d224870bff",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b4d698da8bb7697b754adb5655c932342462d9b9341cdaa081b3604dbdf7559b",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32f103zdt6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "69e123182e136e09f86832b2b2d3cb43b51a88ef4bb59763a66ccc015095b7be",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-144(20x20)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "144"
    }
  },
  "variants": [],
  "sections": [
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    "breadcrumbs",
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  "discovery_triggers": [
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  "discovery_pitch": "STM32F103ZDT6 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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