STM32F103ZEH7

{
  "slug": "stm32f103zeh7",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LFBGA-144. Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f103zeh7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32f103zeh7.kicad_sym",
    "stm32f103zeh7.kicad_mod",
    "stm32f103zeh7.glb",
    "stm32f103zeh7.step",
    "stm32f103zeh7.lbr",
    "docs/hero.png",
    "docs/stm32f103zeh7-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32f103zeh7-hero.glb",
    "stm32f103zeh7-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32F103ZEH7",
    "manufacturer": "STMicroelectronics",
    "package": "LFBGA-144",
    "pin_count": 144,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588952460480155648",
    "parts": {
      "symbol": "stm32f103zeh7.kicad_sym",
      "footprint": "stm32f103zeh7.kicad_mod",
      "model_3d": "stm32f103zeh7-hero.glb",
      "model_3d_plain": "stm32f103zeh7.glb",
      "model_3d_step": "stm32f103zeh7-etched.step",
      "model_3d_step_plain": "stm32f103zeh7.step",
      "lbr": "stm32f103zeh7.lbr"
    },
    "distributor_links": {
      "lcsc": "C1340909",
      "digikey": "497-11545-ND",
      "mouser": "511-STM32F103ZEH7"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T21:01:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-11545-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM32F103ZEH7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "A1",
        "name": "PC13-TAMPER-RTC",
        "type": "bidirectional",
        "description": "Backup-domain I/O supplied through the power switch, which sinks only 3 mA, so output speed is limited to 2 MHz at 30 pF and it must not source current (e.g. an LED); alternate function TAMPER-RTC."
      },
      {
        "number": "A2",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE3, alternates TRACED0 and FSMC_A19."
      },
      {
        "number": "A3",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE2, alternates TRACECK and FSMC_A23."
      },
      {
        "number": "A4",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE1, alternate FSMC_NBL1."
      },
      {
        "number": "A5",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE0, alternates TIM4_ETR and FSMC_NBL0."
      },
      {
        "number": "A6",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function NJTRST, remap PB4 with alternates SPI3_MISO, TIM3_CH1 and SPI1_MISO."
      },
      {
        "number": "A7",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTDO, remap PB3 with alternates SPI3_SCK/I2S3_CK, TIM2_CH2, SPI1_SCK and TRACESWO."
      },
      {
        "number": "A8",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD6, alternates FSMC_NWAIT and USART2_RX."
      },
      {
        "number": "A9",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD7, alternates FSMC_NE1/FSMC_NCE2 and USART2_CK."
      },
      {
        "number": "A10",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTDI, remap PA15 with alternates SPI3_NSS/I2S3_WS, TIM2_CH1_ETR and SPI1_NSS."
      },
      {
        "number": "A11",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTCK-SWCLK, remap PA14."
      },
      {
        "number": "A12",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function JTMS-SWDIO, remap PA13."
      },
      {
        "number": "B1",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "Backup-domain I/O supplied through the power switch with the same 3 mA sink and 2 MHz / 30 pF output limits; alternate function OSC32_IN."
      },
      {
        "number": "B2",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE4, alternates TRACED1 and FSMC_A20."
      },
      {
        "number": "B3",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE5, alternates TRACED2 and FSMC_A21."
      },
      {
        "number": "B4",
        "name": "PE6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE6, alternates TRACED3 and FSMC_A22."
      },
      {
        "number": "B5",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB9, alternates TIM4_CH4/SDIO_D5, I2C1_SDA and CAN_TX."
      },
      {
        "number": "B6",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PB5, alternates I2C1_SMBA, SPI3_MOSI/I2S3_SD, TIM3_CH2 and SPI1_MOSI."
      },
      {
        "number": "B7",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG15 with no alternate function listed."
      },
      {
        "number": "B8",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG12, alternate FSMC_NE4."
      },
      {
        "number": "B9",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD5, alternates FSMC_NWE and USART2_TX."
      },
      {
        "number": "B10",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC11, alternates UART4_RX/SDIO_D3 and USART3_RX (remap)."
      },
      {
        "number": "B11",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC10, alternates UART4_TX/SDIO_D2 and USART3_TX (remap)."
      },
      {
        "number": "B12",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA12, alternates USART1_RTS, USB_DP, CAN_TX and TIM1_ETR."
      },
      {
        "number": "C1",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Backup-domain I/O supplied through the power switch with the same 3 mA sink and 2 MHz / 30 pF output limits; alternate function OSC32_OUT."
      },
      {
        "number": "C2",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply for the RTC and backup registers."
      },
      {
        "number": "C3",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF0, alternate FSMC_A0."
      },
      {
        "number": "C4",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF1, alternate FSMC_A1."
      },
      {
        "number": "C5",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB8, alternates TIM4_CH3/SDIO_D4, I2C1_SCL and CAN_RX."
      },
      {
        "number": "C6",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB6, alternates I2C1_SCL and TIM4_CH1, with USART1_TX as remap."
      },
      {
        "number": "C7",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG14, alternate FSMC_A25."
      },
      {
        "number": "C8",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG11, alternate FSMC_NCE4_2."
      },
      {
        "number": "C9",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD4, alternates FSMC_NOE and USART2_RTS."
      },
      {
        "number": "C10",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC12, alternates UART5_TX/SDIO_CK and USART3_CK (remap)."
      },
      {
        "number": "C11",
        "name": "NC",
        "type": "unconnected",
        "description": "Table 5 lists this ball as 'Not connected'."
      },
      {
        "number": "C12",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA11, alternates USART1_CTS, USBDM, CAN_RX and TIM1_CH4."
      },
      {
        "number": "D1",
        "name": "OSC_IN",
        "type": "input",
        "description": "Oscillator input for the external 4-16 MHz crystal (HSE)."
      },
      {
        "number": "D2",
        "name": "VSS_5",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "D3",
        "name": "VDD_5",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "D4",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF2, alternate FSMC_A2."
      },
      {
        "number": "D5",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot mode selection input (BOOT0), standard input without 5 V tolerance per Table 5."
      },
      {
        "number": "D6",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB7, alternates I2C1_SDA, FSMC_NADV, TIM4_CH2 and USART1_RX (remap)."
      },
      {
        "number": "D7",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG13, alternate FSMC_A24."
      },
      {
        "number": "D8",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG10, alternates FSMC_NCE4_1 and FSMC_NE3."
      },
      {
        "number": "D9",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD3, alternates FSMC_CLK and USART2_CTS."
      },
      {
        "number": "D10",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD1, alternates OSC_OUT (on this package PD1 is available by default), FSMC_D3 and CAN_TX."
      },
      {
        "number": "D11",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA10, alternates USART1_RX and TIM1_CH3."
      },
      {
        "number": "D12",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA9, alternates USART1_TX and TIM1_CH2."
      },
      {
        "number": "E1",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Oscillator output for the external 4-16 MHz crystal (HSE)."
      },
      {
        "number": "E2",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF3, alternate FSMC_A3."
      },
      {
        "number": "E3",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF4, alternate FSMC_A4."
      },
      {
        "number": "E4",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF5, alternate FSMC_A5."
      },
      {
        "number": "E5",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "E6",
        "name": "VSS_11",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "E7",
        "name": "VSS_10",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "E8",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG9, alternates FSMC_NE2 and FSMC_NCE3."
      },
      {
        "number": "E9",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD2, alternates TIM3_ETR, UART5_RX and SDIO_CMD."
      },
      {
        "number": "E10",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD0, alternates OSC_IN (on this package PD0 is available by default), FSMC_D2 and CAN_RX."
      },
      {
        "number": "E11",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC9, alternates TIM8_CH4/SDIO_D1 and TIM3_CH4."
      },
      {
        "number": "E12",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PA8, alternates USART1_CK, TIM1_CH1 and MCO."
      },
      {
        "number": "F1",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset pin listed as I/O in Table 5 (not 5 V-tolerant); its characteristics are given in Section 5.3.15."
      },
      {
        "number": "F2",
        "name": "PF7",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PF7, alternates ADC3_IN5 and FSMC_NREG."
      },
      {
        "number": "F3",
        "name": "PF6",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PF6, alternates ADC3_IN4 and FSMC_NIORD."
      },
      {
        "number": "F4",
        "name": "VDD_4",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F5",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F6",
        "name": "VDD_11",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F7",
        "name": "VDD_10",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F8",
        "name": "VDD_8",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F9",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F10",
        "name": "VDD_9",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "F11",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC8, alternates TIM8_CH3/SDIO_D0 and TIM3_CH3."
      },
      {
        "number": "F12",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC7, alternates I2S3_MCK, TIM8_CH2/SDIO_D7 and TIM3_CH2."
      },
      {
        "number": "G1",
        "name": "PF10",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PF10, alternates ADC3_IN8 and FSMC_INTR."
      },
      {
        "number": "G2",
        "name": "PF9",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PF9, alternates ADC3_IN7 and FSMC_CD."
      },
      {
        "number": "G3",
        "name": "PF8",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PF8, alternates ADC3_IN6 and FSMC_NIOWR."
      },
      {
        "number": "G4",
        "name": "VSS_4",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "G5",
        "name": "VDD_6",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "G6",
        "name": "VDD_7",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "G7",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply pin within the 2.0 to 3.6 V application supply and I/O range."
      },
      {
        "number": "G8",
        "name": "VSS_8",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "G9",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "G10",
        "name": "VSS_9",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "G11",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG8 with no alternate function listed."
      },
      {
        "number": "G12",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PC6, alternates I2S2_MCK, TIM8_CH1/SDIO_D6 and TIM3_CH1."
      },
      {
        "number": "H1",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PC0, alternate ADC123_IN10."
      },
      {
        "number": "H2",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PC1, alternate ADC123_IN11."
      },
      {
        "number": "H3",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PC2, alternate ADC123_IN12."
      },
      {
        "number": "H4",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PC3, alternate ADC123_IN13."
      },
      {
        "number": "H5",
        "name": "VSS_6",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "H6",
        "name": "VSS_7",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "H7",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Digital ground pin; all voltages are referenced to VSS."
      },
      {
        "number": "H8",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE11, alternates FSMC_D8 and TIM1_CH2."
      },
      {
        "number": "H9",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD11, alternates FSMC_A16 and USART3_CTS."
      },
      {
        "number": "H10",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG7, alternate FSMC_INT3."
      },
      {
        "number": "H11",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG6, alternate FSMC_INT2."
      },
      {
        "number": "H12",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG5, alternate FSMC_A15."
      },
      {
        "number": "J1",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin for the analog supply domain (VDDA)."
      },
      {
        "number": "J2",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA0, with WKUP, USART2_CTS, ADC123_IN0, TIM2_CH1_ETR and TIM5_CH1/TIM8_ETR as alternates."
      },
      {
        "number": "J3",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA4, alternates SPI1_NSS, USART2_CK, DAC_OUT1 and ADC12_IN4."
      },
      {
        "number": "J4",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PC4, alternate ADC12_IN14."
      },
      {
        "number": "J5",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB2/BOOT1."
      },
      {
        "number": "J6",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG1, alternate FSMC_A11."
      },
      {
        "number": "J7",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE10, alternates FSMC_D7 and TIM1_CH2N."
      },
      {
        "number": "J8",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE12, alternates FSMC_D9 and TIM1_CH3N."
      },
      {
        "number": "J9",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD10, alternates FSMC_D15 and USART3_CK."
      },
      {
        "number": "J10",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG4, alternate FSMC_A14."
      },
      {
        "number": "J11",
        "name": "PG3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG3, alternate FSMC_A13."
      },
      {
        "number": "J12",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG2, alternate FSMC_A12."
      },
      {
        "number": "K1",
        "name": "VREF-",
        "type": "power_in",
        "description": "Negative reference voltage for the ADC; VREF- can be internally connected to VSSA depending on the package."
      },
      {
        "number": "K2",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA1, alternates USART2_RTS, ADC123_IN1, TIM5_CH2 and TIM2_CH2."
      },
      {
        "number": "K3",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA5, alternates SPI1_SCK, DAC_OUT2 and ADC12_IN5."
      },
      {
        "number": "K4",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PC5, alternate ADC12_IN15."
      },
      {
        "number": "K5",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF13, alternate FSMC_A7."
      },
      {
        "number": "K6",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PG0, alternate FSMC_A10."
      },
      {
        "number": "K7",
        "name": "PE9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE9, alternates FSMC_D6 and TIM1_CH1."
      },
      {
        "number": "K8",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE13, alternates FSMC_D10 and TIM1_CH3."
      },
      {
        "number": "K9",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD9, alternates FSMC_D14 and USART3_RX."
      },
      {
        "number": "K10",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD13, alternates FSMC_A18 and TIM4_CH2."
      },
      {
        "number": "K11",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD14, alternates FSMC_D0 and TIM4_CH3."
      },
      {
        "number": "K12",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD15, alternates FSMC_D1 and TIM4_CH4."
      },
      {
        "number": "L1",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage for the ADC; VREF+ can be internally connected to VDDA depending on the package."
      },
      {
        "number": "L2",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA2, alternates USART2_TX, ADC123_IN2, TIM5_CH3 and TIM2_CH3."
      },
      {
        "number": "L3",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA6, alternates SPI1_MISO, TIM8_BKIN, ADC12_IN6, TIM3_CH1 and TIM1_BKIN."
      },
      {
        "number": "L4",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PB0, alternates ADC12_IN8, TIM3_CH3, TIM8_CH2N and TIM1_CH2N."
      },
      {
        "number": "L5",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF12, alternate FSMC_A6."
      },
      {
        "number": "L6",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF15, alternate FSMC_A9."
      },
      {
        "number": "L7",
        "name": "PE8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE8, alternates FSMC_D5 and TIM1_CH1N."
      },
      {
        "number": "L8",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE14, alternates FSMC_D11 and TIM1_CH4."
      },
      {
        "number": "L9",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD8, alternates FSMC_D13 and USART3_TX."
      },
      {
        "number": "L10",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PD12, alternates FSMC_A17, TIM4_CH1 and USART3_RTS."
      },
      {
        "number": "L11",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB14, alternates SPI2_MISO, TIM1_CH2N and USART3_RTS."
      },
      {
        "number": "L12",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB15, alternates SPI2_MOSI/I2S2_SD and TIM1_CH3N."
      },
      {
        "number": "M1",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin for the ADC; the ADC supply range is 2.4 to 3.6 V."
      },
      {
        "number": "M2",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA3, alternates USART2_RX, ADC123_IN3, TIM5_CH4 and TIM2_CH4."
      },
      {
        "number": "M3",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PA7, alternates SPI1_MOSI, TIM8_CH1N, ADC12_IN7, TIM3_CH2 and TIM1_CH1N."
      },
      {
        "number": "M4",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Standard I/O (not 5 V-tolerant); default function PB1, alternates ADC12_IN9, TIM3_CH4, TIM8_CH3N and TIM1_CH3N."
      },
      {
        "number": "M5",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF11, alternate FSMC_NIOS16."
      },
      {
        "number": "M6",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PF14, alternate FSMC_A8."
      },
      {
        "number": "M7",
        "name": "PE7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE7, alternates FSMC_D4 and TIM1_ETR."
      },
      {
        "number": "M8",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PE15, alternates FSMC_D12 and TIM1_BKIN."
      },
      {
        "number": "M9",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB10, alternates I2C2_SCL, USART3_TX and TIM2_CH3."
      },
      {
        "number": "M10",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB11, alternates I2C2_SDA, USART3_RX and TIM2_CH4."
      },
      {
        "number": "M11",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB12, alternates SPI2_NSS/I2S2_WS, I2C2_SMBA, USART3_CK and TIM1_BKIN."
      },
      {
        "number": "M12",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O; default function PB13, alternates SPI2_SCK/I2S2_CK, USART3_CTS and TIM1_CH1N."
      }
    ],
    "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: Package selection: the MPN STM32F103ZEH7 carries code H (BGA) and Z (144 pins) in the ordering schem; The ballout figure (Figure 3, BGA144 ballout) is garbled in the text extraction. The ball-to-pin map; Table 5 gives ball C11 as 'Not connected' in the LFBGA144 column; it is recorded as unconnected."
        ],
        "pages_sent": 63,
        "cost_usd": 0.3829,
        "at": "2026-10-11T21:01:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588952460480155648",
        "pages": 143,
        "sha256": "c61db5e362b62f2f",
        "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": "stm32f103zeh7.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.0,
          10.0,
          1.712
        ],
        "zmin_mm": -0.01,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e0a33766711d8fc4847f4607bdf5cd9e4e239113b18eeb8bc473a9d1e999996d",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32f103zeh7-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.0,
          10.0,
          1.712
        ],
        "zmin_mm": -0.01,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "75b6299d170cc8736ff0f730e6a99aa4c2f4cb623e22dd885d87d2090127cd43",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}