STM32L476QGI3

{
  "slug": "stm32l476qgi3",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFBGA-132. Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32l476qgi3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "stm32l476qgi3.kicad_mod",
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    "stm32l476qgi3.step",
    "stm32l476qgi3.lbr",
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    "docs/stm32l476qgi3-datasheet.pdf",
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    "viewers/footprint.html",
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    "stm32l476qgi3-hero.overlay.json"
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  "component": {
    "mpn": "STM32L476QGI3",
    "manufacturer": "STMicroelectronics",
    "package": "UFBGA-132",
    "pin_count": 132,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588952084141629440",
    "parts": {
      "symbol": "stm32l476qgi3.kicad_sym",
      "footprint": "stm32l476qgi3.kicad_mod",
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      "model_3d_step": "stm32l476qgi3-etched.step",
      "model_3d_step_plain": "stm32l476qgi3.step",
      "lbr": "stm32l476qgi3.lbr"
    },
    "distributor_links": {
      "lcsc": "C1338828",
      "digikey": "497-17993-ND",
      "mouser": "511-STM32L476QGI3"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T21:49:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17993-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L476QGI3",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "A1",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TRACED0, TIM3_CH1, LCD_SEG39, FMC_A19 and SAI1_SD_B."
      },
      {
        "number": "A2",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions LCD_SEG37, FMC_NBL1 and TIM17_CH1."
      },
      {
        "number": "A3",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fl) with alternate functions I2C1_SCL, CAN1_RX, LCD_SEG16, SDMMC1_D4 and TIM16_CH1."
      },
      {
        "number": "A4",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated boot-mode selection input whose allowed input voltage range is VSS to 9 V."
      },
      {
        "number": "A5",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions DFSDM1_CKIN1, USART2_CK and FMC_NE1."
      },
      {
        "number": "A6",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions USART2_TX and FMC_NWE."
      },
      {
        "number": "A7",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (FT_la, analog switch supplied by VDDA) that after reset is the NJTRST debug pin with internal pull-up active; also COMP2_INP."
      },
      {
        "number": "A8",
        "name": "PB3 (JTDO-TRACESWO)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_la) that after reset is the JTDO/TRACESWO debug pin; also COMP2_INM."
      },
      {
        "number": "A9",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l) that after reset is the JTDI debug pin with internal pull-up active; also TIM2_CH1, SPI1_NSS and SAI2_FS_B."
      },
      {
        "number": "A10",
        "name": "PA14 (JTCK-SWCLK)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that after reset is the JTCK/SWCLK debug pin with internal pull-down active."
      },
      {
        "number": "A11",
        "name": "PA13 (JTMS-SWDIO)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that after reset is the JTMS/SWDIO debug pin with internal pull-up active; also IR_OUT and OTG_FS_NOE."
      },
      {
        "number": "A12",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_u, USB function supplied by VDDUSB) with alternate functions TIM1_ETR, USART1_RTS_DE, CAN1_TX and OTG_FS_DP."
      },
      {
        "number": "B1",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TRACED1, TIM3_CH2, DFSDM1_DATIN3, FMC_A20 and SAI1_FS_A."
      },
      {
        "number": "B2",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TRACECK, TIM3_ETR, LCD_SEG38, FMC_A23 and SAI1_MCLK_A."
      },
      {
        "number": "B3",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fl) with alternate functions IR_OUT, I2C1_SDA, CAN1_TX, LCD_COM3, SDMMC1_D5 and TIM17_CH1."
      },
      {
        "number": "B4",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_fla) with alternate functions LPTIM1_IN2, I2C1_SDA, USART1_RX, LCD_SEG21 and FMC_NL; also COMP2_INM and PVD_IN."
      },
      {
        "number": "B5",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fa, analog switch supplied by VDDA) with alternate functions LPTIM1_ETR, I2C1_SCL, USART1_TX and TIM16_CH1N; also COMP2_INP."
      },
      {
        "number": "B6",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions DFSDM1_DATIN1, USART2_RX, FMC_NWAIT and SAI1_SD_A."
      },
      {
        "number": "B7",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI2_MOSI, DFSDM1_CKIN0, USART2_RTS_DE and FMC_NOE."
      },
      {
        "number": "B8",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI2_MISO, DFSDM1_DATIN0, USART2_CTS and FMC_CLK."
      },
      {
        "number": "B9",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI2_SCK, DFSDM1_CKIN7, CAN1_TX and FMC_D3."
      },
      {
        "number": "B10",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions SPI3_MOSI, USART3_CK, UART5_TX, SDMMC1_CK and SAI2_SD_B."
      },
      {
        "number": "B11",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions SPI3_SCK, USART3_TX, UART4_TX, SDMMC1_D2 and SAI2_SCK_B."
      },
      {
        "number": "B12",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_u, USB function supplied by VDDUSB) with alternate functions TIM1_CH4, USART1_CTS, CAN1_RX and OTG_FS_DM."
      },
      {
        "number": "C1",
        "name": "PC13",
        "type": "bidirectional",
        "description": "Fast I/O (FT) on the backup domain supplied through the power switch, which sinks only 3 mA, so output speed must not exceed 2 MHz at 30 pF and it must not source LEDs; also RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2."
      },
      {
        "number": "C2",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TRACED2, TIM3_CH3, DFSDM1_CKIN3, FMC_A21 and SAI1_SCK_A."
      },
      {
        "number": "C3",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM4_ETR, LCD_SEG36, FMC_NBL0 and TIM16_CH1."
      },
      {
        "number": "C4",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage 1.71 V to 3.6 V."
      },
      {
        "number": "C5",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_la) with alternate functions LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, USART1_CK, LCD_SEG9 and SAI1_SD_B; also COMP2_OUT."
      },
      {
        "number": "C6",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_fs) supplied only by VDDIO2, with alternate functions I2C1_SCL and FMC_A25."
      },
      {
        "number": "C7",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_fs) supplied only by VDDIO2, with alternate functions I2C1_SDA, USART1_CK and FMC_A24."
      },
      {
        "number": "C8",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM3_ETR, USART3_RTS_DE, UART5_RX, TSC_SYNC and SDMMC1_CMD."
      },
      {
        "number": "C9",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions SPI2_NSS, DFSDM1_DATIN7, CAN1_RX and FMC_D2."
      },
      {
        "number": "C10",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions SPI3_MISO, USART3_RX, UART4_RX, SDMMC1_D3 and SAI2_MCLK_B."
      },
      {
        "number": "C11",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "USB supply pin; must be 3.0 V to 3.6 V when USB is used, and may be 0 V to 3.6 V when USB is not used."
      },
      {
        "number": "C12",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_lu, USB function supplied by VDDUSB) with alternate functions TIM1_CH3, USART1_RX, OTG_FS_ID and TIM17_BKIN."
      },
      {
        "number": "D1",
        "name": "PC14-OSC32_IN (PC14)",
        "type": "bidirectional",
        "description": "Fast I/O (FT) on the backup domain with the 32.768 kHz LSE oscillator input OSC32_IN; same 3 mA power-switch limit as PC13."
      },
      {
        "number": "D2",
        "name": "PE6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TRACED3, TIM3_CH4, FMC_A22 and SAI1_SD_A; also RTC_TAMP3/WKUP3."
      },
      {
        "number": "D3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "D4",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions I2C2_SMBA and FMC_A2."
      },
      {
        "number": "D5",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_f) with alternate functions I2C2_SCL and FMC_A1."
      },
      {
        "number": "D6",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_f) with alternate functions I2C2_SDA and FMC_A0."
      },
      {
        "number": "D7",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions LPTIM1_ETR, SPI3_NSS, USART1_RTS_DE, FMC_NE4 and SAI2_SD_A."
      },
      {
        "number": "D8",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions LPTIM1_IN1, SPI3_MISO, USART1_RX, FMC_NE3 and TIM15_CH1."
      },
      {
        "number": "D9",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions SPI3_SCK, USART1_TX, FMC_NCE/FMC_NE2 and SAI2_SCK_A."
      },
      {
        "number": "D10",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_lu, USB function supplied by VDDUSB) with alternate functions TIM1_CH2, USART1_TX, LCD_COM1 and TIM15_BKIN; also OTG_FS_VBUS."
      },
      {
        "number": "D11",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions MCO, TIM1_CH1, USART1_CK, OTG_FS_SOF and LCD_COM0."
      },
      {
        "number": "D12",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM8_BKIN2, TIM3_CH4, TIM8_CH4, OTG_FS_NOE, SDMMC1_D1 and SAI2_EXTCLK."
      },
      {
        "number": "E1",
        "name": "PC15-OSC32_OUT (PC15)",
        "type": "bidirectional",
        "description": "Fast I/O (FT) on the backup domain with the 32.768 kHz LSE oscillator output OSC32_OUT; same 3 mA power-switch limit as PC13."
      },
      {
        "number": "E2",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply for RTC and backup registers; operating voltage 1.55 V to 3.6 V."
      },
      {
        "number": "E3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "E4",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_a, analog switch supplied by VDDA) with alternate function FMC_A3 and ADC3_IN6."
      },
      {
        "number": "E9",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions SPI1_NSS, LPUART1_CTS, FMC_A15 and SAI2_SD_B."
      },
      {
        "number": "E10",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM3_CH3, TIM8_CH3, TSC_G4_IO3, LCD_SEG26 and SDMMC1_D0."
      },
      {
        "number": "E11",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM3_CH2, TIM8_CH2, DFSDM1_DATIN3, LCD_SEG25, SDMMC1_D7 and SAI2_MCLK_B."
      },
      {
        "number": "E12",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM3_CH1, TIM8_CH1, DFSDM1_CKIN3, LCD_SEG24, SDMMC1_D6 and SAI2_MCLK_A."
      },
      {
        "number": "F1",
        "name": "PH0-OSC_IN (PH0)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that is also the high-speed external oscillator input OSC_IN."
      },
      {
        "number": "F2",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "F3",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_a) with alternate function FMC_A4 and ADC3_IN7."
      },
      {
        "number": "F4",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_a) with alternate function FMC_A5 and ADC3_IN8."
      },
      {
        "number": "F6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "F7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "F9",
        "name": "PG3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions SPI1_MISO, FMC_A13, SAI2_FS_B and EVENTOUT."
      },
      {
        "number": "F10",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions SPI1_MOSI, FMC_A14 and SAI2_MCLK_B."
      },
      {
        "number": "F11",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "F12",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin, to be connected to the external ground."
      },
      {
        "number": "G1",
        "name": "PH1-OSC_OUT (PH1)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that is also the high-speed external oscillator output OSC_OUT."
      },
      {
        "number": "G2",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage 1.71 V to 3.6 V."
      },
      {
        "number": "G3",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions LPTIM1_IN2, SPI3_MOSI, USART1_CTS, SAI2_MCLK_A and TIM15_CH2."
      },
      {
        "number": "G4",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions I2C3_SMBA and LPUART1_RTS_DE."
      },
      {
        "number": "G6",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage 1.71 V to 3.6 V."
      },
      {
        "number": "G7",
        "name": "VDDIO2",
        "type": "power_in",
        "description": "Supply for the PG[15:2] I/Os; 1.08 V to 3.6 V when at least one I/O in PG[15:2] is used, and 0 V to 3.6 V when not used."
      },
      {
        "number": "G9",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TSC_G8_IO4, FMC_A11 and EVENTOUT."
      },
      {
        "number": "G10",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions SPI1_SCK, FMC_A12 and SAI2_SCK_B."
      },
      {
        "number": "G11",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage 1.71 V to 3.6 V."
      },
      {
        "number": "G12",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage 1.71 V to 3.6 V."
      },
      {
        "number": "H1",
        "name": "PC0",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_fla) with alternate functions LPTIM1_IN1, I2C3_SCL, DFSDM1_DATIN4, LPUART1_RX and LCD_SEG18; also ADC123_IN1."
      },
      {
        "number": "H2",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with embedded weak pull-up resistor."
      },
      {
        "number": "H3",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage 1.71 V to 3.6 V."
      },
      {
        "number": "H4",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fs) supplied only by VDDIO2, with alternate functions I2C3_SCL, LPUART1_TX and FMC_INT."
      },
      {
        "number": "H9",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TSC_G8_IO3, FMC_A10 and EVENTOUT."
      },
      {
        "number": "H10",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM4_CH4, LCD_SEG35 and FMC_D1."
      },
      {
        "number": "H11",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM4_CH3, LCD_SEG34 and FMC_D0."
      },
      {
        "number": "H12",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM4_CH2, TSC_G6_IO4, LCD_SEG33, FMC_A18 and LPTIM2_OUT."
      },
      {
        "number": "J1",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Combined analog ground and negative reference voltage pin on this package; it must be at the same potential as VSS."
      },
      {
        "number": "J2",
        "name": "PC1",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_fla) with alternate functions LPTIM1_OUT, I2C3_SDA, DFSDM1_CKIN4, LPUART1_TX and LCD_SEG19; also ADC123_IN2."
      },
      {
        "number": "J3",
        "name": "PC2",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions LPTIM1_IN2, SPI2_MISO, DFSDM1_CKOUT and LCD_SEG20; also ADC123_IN3."
      },
      {
        "number": "J4",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_a, analog switch supplied by VDDA) with alternate functions SPI1_NSS, SPI3_NSS, USART2_CK and LPTIM2_OUT; also ADC12_IN9 and DAC1_OUT1."
      },
      {
        "number": "J5",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions TIM1_CH1N, TIM3_CH2, SPI1_MOSI, QUADSPI_BK1_IO2 and TIM17_CH1; also OPAMP2_VINM and ADC12_IN12."
      },
      {
        "number": "J6",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fs) supplied only by VDDIO2, with alternate functions I2C3_SDA and LPUART1_RX."
      },
      {
        "number": "J7",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions FMC_A6 and EVENTOUT."
      },
      {
        "number": "J8",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions DFSDM1_CKIN6, TSC_G8_IO1 and FMC_A8."
      },
      {
        "number": "J9",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TSC_G8_IO2 and FMC_A9."
      },
      {
        "number": "J10",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM4_CH1, USART3_RTS_DE, TSC_G6_IO3, LCD_SEG32 and FMC_A17."
      },
      {
        "number": "J11",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions USART3_CTS, TSC_G6_IO2, LCD_SEG31, FMC_A16 and LPTIM2_ETR."
      },
      {
        "number": "J12",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions USART3_CK, TSC_G6_IO1, LCD_SEG30, FMC_D15 and SAI2_SCK_A."
      },
      {
        "number": "K1",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_s) supplied only by VDDIO2, with alternate functions LPTIM1_OUT and I2C1_SMBA."
      },
      {
        "number": "K2",
        "name": "PC3",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_a) with alternate functions LPTIM1_ETR, SPI2_MOSI, LCD_VLCD, SAI1_SD_A and LPTIM2_ETR; also ADC123_IN4."
      },
      {
        "number": "K3",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions TIM2_CH3, TIM5_CH3, USART2_TX, LCD_SEG1 and TIM15_CH1; also ADC12_IN7 and WKUP4/LSCO."
      },
      {
        "number": "K4",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_a, analog switch supplied by VDDA) with alternate functions TIM2_CH1, TIM2_ETR, TIM8_CH1N, SPI1_SCK and LPTIM2_ETR; also ADC12_IN10 and DAC1_OUT2."
      },
      {
        "number": "K5",
        "name": "PC4",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions USART3_TX and LCD_SEG22; also COMP1_INM and ADC12_IN13."
      },
      {
        "number": "K6",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate function EVENTOUT only."
      },
      {
        "number": "K7",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions DFSDM1_DATIN6 and FMC_A7."
      },
      {
        "number": "K8",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions USART3_RX, LCD_SEG29, FMC_D14 and SAI2_MCLK_A."
      },
      {
        "number": "K9",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions USART3_TX, LCD_SEG28 and FMC_D13."
      },
      {
        "number": "K10",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI, DFSDM1_CKIN2, LCD_SEG15 and SAI2_SD_A."
      },
      {
        "number": "K11",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fl, LCD function supplied by VLCD) with alternate functions TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE and LCD_SEG14."
      },
      {
        "number": "K12",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fl, LCD function supplied by VLCD) with alternate functions TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS and LPUART1_CTS."
      },
      {
        "number": "L1",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage for the ADC, DAC and VREFBUF; it can be connected internally to VDDA depending on the package."
      },
      {
        "number": "L2",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_a) with alternate functions TIM2_CH1, TIM5_CH1, TIM8_ETR, USART2_CTS and UART4_TX; also OPAMP1_VINP, ADC12_IN5 and RTC_TAMP2/WKUP1."
      },
      {
        "number": "L3",
        "name": "PA3",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_la, analog switch supplied by VDDA) with alternate functions TIM2_CH4, TIM5_CH4, USART2_RX, LCD_SEG2 and TIM15_CH2; also OPAMP1_VOUT and ADC12_IN8."
      },
      {
        "number": "L4",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, USART3_CTS, QUADSPI_BK1_IO3 and TIM16_CH1; also OPAMP2_VINP and ADC12_IN11."
      },
      {
        "number": "L5",
        "name": "PC5",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions USART3_RX and LCD_SEG23; also COMP1_INP, ADC12_IN14 and WKUP5."
      },
      {
        "number": "L6",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_a) with alternate functions RTC_OUT, LPTIM1_OUT, I2C3_SMBA and DFSDM1_CKIN0; also COMP1_INP."
      },
      {
        "number": "L7",
        "name": "PE8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH1N, DFSDM1_CKIN2, FMC_D5 and SAI1_SCK_B."
      },
      {
        "number": "L8",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH2N, DFSDM1_DATIN4, TSC_G5_IO1, QUADSPI_CLK, FMC_D7 and SAI1_MCLK_B."
      },
      {
        "number": "L9",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH3N, SPI1_NSS, DFSDM1_DATIN5, TSC_G5_IO3, QUADSPI_BK1_IO0 and FMC_D9."
      },
      {
        "number": "L10",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fl, LCD function supplied by VLCD) with alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX and QUADSPI_CLK."
      },
      {
        "number": "L11",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+ capable I/O (FT_fl, LCD function supplied by VLCD) with alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX and QUADSPI_NCS."
      },
      {
        "number": "L12",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l, LCD function supplied by VLCD) with alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS, USART3_CK, LPUART1_RTS_DE and SAI2_FS_A."
      },
      {
        "number": "M1",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply: ADC or COMP used requires 1.62 V to 3.6 V, DAC or OPAMP used requires 1.8 V to 3.6 V, VREFBUF used requires 2.4 V to 3.6 V."
      },
      {
        "number": "M2",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS_DE, UART4_RX, LCD_SEG0 and TIM15_CH1N; also OPAMP1_VINM and ADC12_IN6."
      },
      {
        "number": "M3",
        "name": "OPAMP1_VINM",
        "type": "input",
        "description": "Dedicated inverting input of OPAMP1; a 3.6 V-tolerant (TT) pin on UFBGA packages, used instead of PA1 or PA7."
      },
      {
        "number": "M4",
        "name": "OPAMP2_VINM",
        "type": "input",
        "description": "Dedicated inverting input of OPAMP2; a 3.6 V-tolerant (TT) pin on UFBGA packages, used instead of PA7."
      },
      {
        "number": "M5",
        "name": "PB0",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_la, analog switch supplied by VDDA) with alternate functions TIM1_CH2N, TIM3_CH3, TIM8_CH2N, USART3_CK, QUADSPI_BK1_IO1 and COMP1_OUT; also OPAMP2_VOUT and ADC12_IN15."
      },
      {
        "number": "M6",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant analog-capable I/O (FT_la) with alternate functions TIM1_CH3N, TIM3_CH4, TIM8_CH3N, DFSDM1_DATIN0, USART3_RTS_DE, QUADSPI_BK1_IO0 and LPTIM2_IN1; also COMP1_INM and ADC12_IN16."
      },
      {
        "number": "M7",
        "name": "PE7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_ETR, DFSDM1_DATIN2, FMC_D4 and SAI1_SD_B."
      },
      {
        "number": "M8",
        "name": "PE9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH1, DFSDM1_CKOUT, FMC_D6 and SAI1_FS_B."
      },
      {
        "number": "M9",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH2, DFSDM1_CKIN4, TSC_G5_IO2, QUADSPI_NCS and FMC_D8."
      },
      {
        "number": "M10",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH3, SPI1_SCK, DFSDM1_CKIN5, TSC_G5_IO4, QUADSPI_BK1_IO1 and FMC_D10."
      },
      {
        "number": "M11",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_CH4, TIM1_BKIN2, SPI1_MISO, QUADSPI_BK1_IO2 and FMC_D11."
      },
      {
        "number": "M12",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with alternate functions TIM1_BKIN, TIM1_BKIN_COMP1, SPI1_MOSI, QUADSPI_BK1_IO3 and FMC_D12."
      }
    ],
    "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: Ordering code STM32L476QGI3 decodes to Q = 132 pins, G = 1 MB Flash, I = UFBGA 7x7 mm, 3 = -40 to 12; The 12 empty positions in the 12x12 grid (E5, E6, E7, E8, F5, F8, G5, G8, H5, H6, H7, H8) have no pi; Table 16 gives no separate VREF- ball for UFBGA132; the combined VSSA/VREF- pin is at J1 (footnote 5",
          "1/132 pins cited to the wrong page (name found elsewhere): ['M8:PE9@p90']"
        ],
        "pages_sent": 101,
        "cost_usd": 0.5607,
        "at": "2026-10-08T21:49:05"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588952084141629440",
        "pages": 270,
        "sha256": "241f8f908b7f839d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 132,
        "described": 132,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stm32l476qgi3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.756
        ],
        "zmin_mm": -0.006,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f38145b3fe837207535a6375bbaa97d9d04348e86bb9fa195fc778b09d3795eb",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32l476qgi3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.756
        ],
        "zmin_mm": -0.006,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7010f6e57c9f0f0c343ba98b6378578a7e7e07aa0cbe163716bc7041a0b11091",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}