STM32L4S5QII6

{
  "slug": "stm32l4s5qii6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontroller Units (MCUs/MPUs/SOCs), UFBGA-132. Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "stm32l4s5qii6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
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    "stm32l4s5qii6.kicad_mod",
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    "stm32l4s5qii6.step",
    "stm32l4s5qii6.lbr",
    "docs/hero.png",
    "docs/stm32l4s5qii6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "stm32l4s5qii6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32L4S5QII6",
    "manufacturer": "STMicroelectronics",
    "package": "UFBGA-132",
    "pin_count": 132,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588951815719702528",
    "parts": {
      "symbol": "stm32l4s5qii6.kicad_sym",
      "footprint": "stm32l4s5qii6.kicad_mod",
      "model_3d": "stm32l4s5qii6-hero.glb",
      "model_3d_plain": "stm32l4s5qii6.glb",
      "model_3d_step": "stm32l4s5qii6-etched.step",
      "model_3d_step_plain": "stm32l4s5qii6.step",
      "lbr": "stm32l4s5qii6.lbr"
    },
    "distributor_links": {
      "lcsc": "C1341220",
      "digikey": "497-18055-ND",
      "mouser": "511-STM32L4S5QII6"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T11:55:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18055-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L4S5QII6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "A1",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l); alternate functions include TRACED0, TIM3_CH1, OCTOSPIM_P1_DQS, TSC_G7_IO2, SAI1_SD_B and EVENTOUT."
      },
      {
        "number": "A2",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include DCMI_D3, FMC_NBL1, TIM17_CH1 and EVENTOUT."
      },
      {
        "number": "A3",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM4_CH3, SAI1_CK1, I2C1_SCL, CAN1_RX, SDMMC1_CKIN and TIM16_CH1."
      },
      {
        "number": "A4",
        "name": "PH3-BOOT0",
        "type": "bidirectional",
        "description": "Dedicated BOOT0 pin (5 V-tolerant I/O, also PH3 with EVENTOUT); the BOOT0 input voltage range is 0 to 9 V."
      },
      {
        "number": "A5",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include DFSDM1_CKIN1, USART2_CK, OCTOSPIM_P1_IO7 and FMC_NCE/FMC_NE1."
      },
      {
        "number": "A6",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include USART2_TX, OCTOSPIM_P1_IO5 and FMC_NWE."
      },
      {
        "number": "A7",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with analog switch supplied by VDDA (FT_fa); after reset it is the NJTRST debug pin with internal pull-up enabled, and COMP2_INP is an additional function."
      },
      {
        "number": "A8",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_la); alternate functions include JTDO/TRACESWO, TIM2_CH2, SPI1_SCK and SAI1_SCK_B, and COMP2_INM is an additional function."
      },
      {
        "number": "A9",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; after reset it is the JTDI debug pin with internal pull-up enabled, and alternate functions include TIM2_CH1, USART2_RX and SPI1_NSS."
      },
      {
        "number": "A10",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; after reset it is the JTCK/SWCLK debug pin with internal pull-down enabled, and alternate functions include LPTIM1_OUT and I2C1_SMBA."
      },
      {
        "number": "A11",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; after reset it is the JTMS/SWDIO debug pin with internal pull-up enabled, and alternate functions include IR_OUT and SAI1_SD_B."
      },
      {
        "number": "A12",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USB function supplied by VDDUSB (FT_u); alternate functions include TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX and OTG_FS_DP."
      },
      {
        "number": "B1",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TRACED1, TIM3_CH2, SAI1_D2, DFSDM1_DATIN3, DCMI_D4 and SAI1_FS_A."
      },
      {
        "number": "B2",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_l); alternate functions include TRACECK, TIM3_ETR, SAI1_CK1, TSC_G7_IO1 and SAI1_MCLK_A."
      },
      {
        "number": "B3",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include IR_OUT, TIM4_CH4, SAI1_D2, I2C1_SDA, SPI2_NSS, CAN1_TX and TIM17_CH1."
      },
      {
        "number": "B4",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with analog switch supplied by VDDA (FT_fla); alternate functions include LPTIM1_IN2, TIM4_CH2, I2C1_SDA, USART1_RX and TIM17_CH1N, and COMP2_INM and PVD_IN are additional functions."
      },
      {
        "number": "B5",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with analog switch supplied by VDDA (FT_fa); alternate functions include LPTIM1_ETR, TIM4_CH1, I2C1_SCL, USART1_TX and TIM16_CH1N, and COMP2_INP is an additional function."
      },
      {
        "number": "B6",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include SAI1_D1, DCMI_D10, SPI3_MOSI, DFSDM1_DATIN1, USART2_RX and FMC_NWAIT."
      },
      {
        "number": "B7",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include SPI2_MOSI, DFSDM1_CKIN0, USART2_RTS_DE, OCTOSPIM_P1_IO4 and FMC_NOE."
      },
      {
        "number": "B8",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include SPI2_SCK, DCMI_D5, SPI2_MISO, DFSDM1_DATIN0, USART2_CTS_NSS and OCTOSPIM_P2_NCS."
      },
      {
        "number": "B9",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include SPI2_SCK, DFSDM1_CKIN7, CAN1_TX and FMC_D3."
      },
      {
        "number": "B10",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TRACED3, SPI3_MOSI, USART3_CK, UART5_TX, DCMI_D9, SDMMC1_CK and SAI2_SD_B."
      },
      {
        "number": "B11",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TRACED1, SPI3_SCK, USART3_TX, UART4_TX, DCMI_D8, SDMMC1_D2 and SAI2_SCK_B."
      },
      {
        "number": "B12",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USB function supplied by VDDUSB (FT_u); alternate functions include TIM1_CH4, TIM1_BKIN2, SPI1_MISO, USART1_CTS_NSS, CAN1_RX and OTG_FS_DM."
      },
      {
        "number": "C1",
        "name": "PC13",
        "type": "bidirectional",
        "description": "I/O supplied through the power switch, which sinks only 3 mA, so in output mode the speed must not exceed 2 MHz with a 30 pF maximum load and the pin must not be used as a current source."
      },
      {
        "number": "C2",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TRACED2, TIM3_CH3, SAI1_CK2, DFSDM1_CKIN3, DCMI_D6 and SAI1_SCK_A."
      },
      {
        "number": "C3",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM4_ETR, DCMI_D2, FMC_NBL0, TIM16_CH1 and EVENTOUT."
      },
      {
        "number": "C4",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply for the I/Os, the internal regulator and system analog circuits, 1.71 V to 3.6 V."
      },
      {
        "number": "C5",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_la); alternate functions include LPTIM1_IN1, TIM3_CH2, I2C1_SMBA, SPI1_MOSI and USART1_CK, and COMP2_OUT is an additional function."
      },
      {
        "number": "C6",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O supplied only by VDDIO2 (FT_fs, 1.08 V to 3.6 V); alternate functions include I2C1_SCL and FMC_A25."
      },
      {
        "number": "C7",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O supplied only by VDDIO2 (FT_fs, 1.08 V to 3.6 V); alternate functions include I2C1_SDA, USART1_CK and FMC_A24."
      },
      {
        "number": "C8",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TRACED2, TIM3_ETR, USART3_RTS_DE, UART5_RX, TSC_SYNC, DCMI_D11 and SDMMC1_CMD."
      },
      {
        "number": "C9",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include SPI2_NSS, DFSDM1_DATIN7, CAN1_RX and FMC_D2."
      },
      {
        "number": "C10",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include DCMI_D2, OCTOSPIM_P1_NCS, SPI3_MISO, USART3_RX, UART4_RX, SDMMC1_D3 and SAI2_MCLK_B."
      },
      {
        "number": "C11",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "Independent USB transceiver supply, 3.0 V to 3.6 V when USB is used (0 to 3.6 V allowed when USB is not used)."
      },
      {
        "number": "C12",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with USB function supplied by VDDUSB (FT_flu); alternate functions include TIM1_CH3, SAI1_D1, USART1_RX, OTG_FS_ID and TIM17_BKIN."
      },
      {
        "number": "D1",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "I/O supplied through the power switch with the same 3 mA sink limit and 2 MHz / 30 pF output restriction as PC13; it is also the OSC32_IN LSE oscillator input."
      },
      {
        "number": "D2",
        "name": "PE6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TRACED3, TIM3_CH4, SAI1_D1, DCMI_D7 and SAI1_SD_A."
      },
      {
        "number": "D3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "D4",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include I2C2_SMBA, OCTOSPIM_P2_IO2, FMC_A2 and EVENTOUT."
      },
      {
        "number": "D5",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O; alternate functions include I2C2_SCL, OCTOSPIM_P2_IO1 and FMC_A1."
      },
      {
        "number": "D6",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O; alternate functions include I2C2_SDA, OCTOSPIM_P2_IO0 and FMC_A0."
      },
      {
        "number": "D7",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include LPTIM1_ETR, SPI3_NSS, USART1_RTS_DE and FMC_NE4."
      },
      {
        "number": "D8",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include LPTIM1_IN1, SPI3_MISO, USART1_RX, FMC_NE3 and TIM15_CH1."
      },
      {
        "number": "D9",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include SPI3_SCK, USART1_TX, FMC_NCE/FMC_NE2 and TIM15_CH1N."
      },
      {
        "number": "D10",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with USB function supplied by VDDUSB (FT_flu); alternate functions include TIM1_CH2, SPI2_SCK, USART1_TX, SAI1_FS_A and TIM15_BKIN, and OTG_FS_VBUS is an additional function."
      },
      {
        "number": "D11",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O; alternate functions include MCO, TIM1_CH1, SAI1_CK2, USART1_CK and OTG_FS_SOF."
      },
      {
        "number": "D12",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O; alternate functions include TRACED0, TIM8_BKIN2, TIM3_CH4, DCMI_D3, I2C3_SDA, OTG_FS_NOE and SDMMC1_D1."
      },
      {
        "number": "E1",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "I/O supplied through the power switch with the same 3 mA sink limit and 2 MHz / 30 pF output restriction as PC13; it is also the OSC32_OUT LSE oscillator output."
      },
      {
        "number": "E2",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply, 1.55 V to 3.6 V, for the RTC, 32 kHz oscillator and backup registers when VDD is not present; RTC_TAMP3 and WKUP3 are additional functions on this ball."
      },
      {
        "number": "E3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "E4",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include OCTOSPIM_P2_IO3, FMC_A3 and EVENTOUT."
      },
      {
        "number": "E9",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include SPI1_NSS, LPUART1_CTS, FMC_A15 and SAI2_SD_B."
      },
      {
        "number": "E10",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM3_CH3, TIM8_CH3, TSC_G4_IO3, DCMI_D2 and SDMMC1_D0."
      },
      {
        "number": "E11",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM3_CH2, TIM8_CH2, DFSDM1_DATIN3, DCMI_D1, SDMMC1_D7 and SAI2_MCLK_B."
      },
      {
        "number": "E12",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM3_CH1, TIM8_CH1, DFSDM1_CKIN3, DCMI_D0, SDMMC1_D6 and SAI2_MCLK_A."
      },
      {
        "number": "F1",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; this ball is the OSC_IN high-speed crystal oscillator input."
      },
      {
        "number": "F2",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "F3",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include OCTOSPIM_P2_CLK, FMC_A4 and EVENTOUT."
      },
      {
        "number": "F4",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include FMC_A5 and EVENTOUT."
      },
      {
        "number": "F6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "F7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "F9",
        "name": "PG3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include SPI1_MISO, FMC_A13 and SAI2_FS_B."
      },
      {
        "number": "F10",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include SPI1_MOSI, FMC_A14 and SAI2_MCLK_B."
      },
      {
        "number": "F11",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "F12",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital supply and I/Os."
      },
      {
        "number": "G1",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; this ball is the OSC_OUT high-speed crystal oscillator output."
      },
      {
        "number": "G2",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply for the I/Os, the internal regulator and system analog circuits, 1.71 V to 3.6 V."
      },
      {
        "number": "G3",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include LPTIM1_IN2, OCTOSPIM_P1_IO5, SPI3_MOSI, USART1_CTS_NSS and TIM15_CH2."
      },
      {
        "number": "G4",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include OCTOSPIM_P1_DQS, I2C3_SMBA and LPUART1_RTS_DE."
      },
      {
        "number": "G6",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply for the I/Os, the internal regulator and system analog circuits, 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 of these I/Os is used (0 V allowed when PG[15:2] are not used)."
      },
      {
        "number": "G9",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include OCTOSPIM_P2_IO5, TSC_G8_IO4 and FMC_A11."
      },
      {
        "number": "G10",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include SPI1_SCK, FMC_A12 and SAI2_SCK_B."
      },
      {
        "number": "G11",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply for the I/Os, the internal regulator and system analog circuits, 1.71 V to 3.6 V."
      },
      {
        "number": "G12",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply for the I/Os, the internal regulator and system analog circuits, 1.71 V to 3.6 V."
      },
      {
        "number": "H1",
        "name": "PC0",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with analog switch supplied by VDDA (FT_fla); alternate functions include LPTIM1_IN1, I2C3_SCL, LPUART1_RX and LPTIM2_IN1, and ADC1_IN1 is an additional function."
      },
      {
        "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 for the I/Os, the internal regulator and system analog circuits, 1.71 V to 3.6 V."
      },
      {
        "number": "H4",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O supplied only by VDDIO2 (FT_fs, 1.08 V to 3.6 V); alternate functions include SAI1_CK1, I2C3_SCL, LPUART1_TX, FMC_INT and SAI1_MCLK_A."
      },
      {
        "number": "H9",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include OCTOSPIM_P2_IO4, TSC_G8_IO3 and FMC_A10."
      },
      {
        "number": "H10",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM4_CH4, LCD_B3 and FMC_D1."
      },
      {
        "number": "H11",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM4_CH3, LCD_B2 and FMC_D0."
      },
      {
        "number": "H12",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM4_CH2, I2C4_SDA, TSC_G6_IO4, FMC_A18 and LPTIM2_OUT."
      },
      {
        "number": "J1",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Analog ground; VREF- must always be equal to VSSA."
      },
      {
        "number": "J2",
        "name": "PC1",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with analog switch supplied by VDDA (FT_fla); alternate functions include TRACED0, LPTIM1_OUT, SPI2_MOSI, I2C3_SDA and LPUART1_TX, and ADC1_IN2 is an additional function."
      },
      {
        "number": "J3",
        "name": "PC2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_la); alternate functions include LPTIM1_IN2, SPI2_MISO, DFSDM1_CKOUT and OCTOSPIM_P1_IO5, and ADC1_IN3 is an additional function."
      },
      {
        "number": "J4",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O with analog switch supplied by VDDA (TT_a); alternate functions include OCTOSPIM_P1_NCS, SPI1_NSS, SPI3_NSS and USART2_CK, and ADC1_IN9 and DAC1_OUT1 are additional functions."
      },
      {
        "number": "J5",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O with analog switch supplied by VDDA (FT_fla); alternate functions include TIM1_CH1N, TIM3_CH2, I2C3_SCL, SPI1_MOSI and OCTOSPIM_P1_IO2, and OPAMP2_VINM and ADC1_IN12 are additional functions."
      },
      {
        "number": "J6",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O supplied only by VDDIO2 (FT_fs, 1.08 V to 3.6 V); alternate functions include I2C3_SDA and LPUART1_RX."
      },
      {
        "number": "J7",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include OCTOSPIM_P2_DQS, LCD_B0 and FMC_A6."
      },
      {
        "number": "J8",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O; alternate functions include I2C4_SCL, DFSDM1_CKIN6, TSC_G8_IO1, LCD_G0 and FMC_A8."
      },
      {
        "number": "J9",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O; alternate functions include I2C4_SDA, TSC_G8_IO2, LCD_G1 and FMC_A9."
      },
      {
        "number": "J10",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM4_CH1, I2C4_SCL, USART3_RTS_DE, FMC_A17, SAI2_FS_A and LPTIM2_IN1."
      },
      {
        "number": "J11",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include I2C4_SMBA, USART3_CTS_NSS, FMC_A16, SAI2_SD_A and LPTIM2_ETR."
      },
      {
        "number": "J12",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include USART3_CK, TSC_G6_IO1, FMC_D15 and SAI2_SCK_A."
      },
      {
        "number": "K1",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O supplied only by VDDIO2 (FT_s, 1.08 V to 3.6 V); alternate functions include LPTIM1_OUT, I2C1_SMBA, OCTOSPIM_P2_DQS and DCMI_D13."
      },
      {
        "number": "K2",
        "name": "PC3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include LPTIM1_ETR, SAI1_D1, SPI2_MOSI, OCTOSPIM_P1_IO6 and LPTIM2_ETR, and ADC1_IN4 is an additional function."
      },
      {
        "number": "K3",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_la); alternate functions include TIM2_CH3, USART2_TX, LPUART1_TX, OCTOSPIM_P1_NCS and TIM15_CH1, and ADC1_IN7 and WKUP4/LSCO are additional functions."
      },
      {
        "number": "K4",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O with analog switch supplied by VDDA (TT_a); alternate functions include TIM2_CH1, TIM2_ETR, TIM8_CH1N, SPI1_SCK and LPTIM2_ETR, and ADC1_IN10 and DAC1_OUT2 are additional functions."
      },
      {
        "number": "K5",
        "name": "PC4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include USART3_TX and OCTOSPIM_P1_IO7, and COMP1_INM and ADC1_IN13 are additional functions."
      },
      {
        "number": "K6",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include LCD_DE, DCMI_D12, DSI_TE and EVENTOUT."
      },
      {
        "number": "K7",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include I2C4_SMBA, DFSDM1_DATIN6, LCD_B1 and FMC_A7."
      },
      {
        "number": "K8",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include USART3_RX, DCMI_PIXCLK, LCD_R4, FMC_D14 and SAI2_MCLK_A."
      },
      {
        "number": "K9",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include USART3_TX, DCMI_HSYNC, LCD_R3, FMC_D13 and EVENTOUT."
      },
      {
        "number": "K10",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI, TSC_G1_IO4, SAI2_SD_A and TIM15_CH2."
      },
      {
        "number": "K11",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM1_CH2N, I2C2_SDA, SPI2_MISO, DFSDM1_DATIN2, USART3_RTS_DE and TIM15_CH1."
      },
      {
        "number": "K12",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS_NSS, LPUART1_CTS and TIM15_CH1N."
      },
      {
        "number": "L1",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage for ADC and DAC: 2 V to VDDA when VDDA is 2 V or higher, and equal to VDDA when VDDA is below 2 V; it is also the VREFBUF_OUT output when the internal buffer is enabled."
      },
      {
        "number": "L2",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include TIM2_CH1, TIM5_CH1, TIM8_ETR, USART2_CTS_NSS and UART4_TX, and OPAMP1_VINP, ADC1_IN5, RTC_TAMP2 and WKUP1 are additional functions."
      },
      {
        "number": "L3",
        "name": "PA3",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O with analog switch supplied by VDDA (TT_a); alternate functions include TIM2_CH4, TIM5_CH4, SAI1_CK1, USART2_RX and LPUART1_RX, and OPAMP1_VOUT and ADC1_IN8 are additional functions."
      },
      {
        "number": "L4",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include TIM1_BKIN, TIM3_CH1, TIM8_BKIN, DCMI_PIXCLK, SPI1_MISO, USART3_CTS_NSS and LPUART1_CTS, and OPAMP2_VINP and ADC1_IN11 are additional functions."
      },
      {
        "number": "L5",
        "name": "PC5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include SAI1_D3 and USART3_RX, and COMP1_INP, ADC1_IN14 and WKUP5 are additional functions."
      },
      {
        "number": "L6",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include RTC_OUT, LPTIM1_OUT, I2C3_SMBA, DFSDM1_CKIN0 and OCTOSPIM_P1_DQS, and COMP1_INP is an additional function."
      },
      {
        "number": "L7",
        "name": "PE8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH1N, DFSDM1_CKIN2, LCD_B7, FMC_D5 and SAI1_SCK_B."
      },
      {
        "number": "L8",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH2N, DFSDM1_DATIN4, TSC_G5_IO1, OCTOSPIM_P1_CLK, FMC_D7 and SAI1_MCLK_B."
      },
      {
        "number": "L9",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH3N, SPI1_NSS, DFSDM1_DATIN5, TSC_G5_IO3, OCTOSPIM_1_IO0 and FMC_D9."
      },
      {
        "number": "L10",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM2_CH3, I2C4_SCL, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, OCTOSPIM_P1_CLK and COMP1_OUT."
      },
      {
        "number": "L11",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fl); alternate functions include TIM2_CH4, I2C4_SDA, I2C2_SDA, DFSDM1_CKIN7, USART3_RX, LPUART1_TX and COMP2_OUT."
      },
      {
        "number": "L12",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_BKIN, I2C2_SMBA, SPI2_NSS, DFSDM1_DATIN1, USART3_CK, LPUART1_RTS_DE and SAI2_FS_A."
      },
      {
        "number": "M1",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply, 1.62 V (ADC/COMP) or 1.8 V (DAC/OPAMP) to 3.6 V, with 2.4 V required when the voltage reference buffer is used."
      },
      {
        "number": "M2",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_la); alternate functions include TIM2_CH2, TIM5_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, UART4_RX and TIM15_CH1N, and OPAMP1_VINM and ADC1_IN6 are additional functions."
      },
      {
        "number": "M3",
        "name": "OPAMP1_VINM",
        "type": "input",
        "description": "Inverting input of OPAMP1; input-only pin with a 3.6 V-tolerant structure (TT)."
      },
      {
        "number": "M4",
        "name": "OPAMP2_VINM",
        "type": "input",
        "description": "Inverting input of OPAMP2; input-only pin with a 3.6 V-tolerant structure (TT)."
      },
      {
        "number": "M5",
        "name": "PB0",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O with LCD and analog switch functions (TT_la); alternate functions include TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI1_NSS, USART3_CK and COMP1_OUT, and OPAMP2_VOUT and ADC1_IN15 are additional functions."
      },
      {
        "number": "M6",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog switch supplied by VDDA (FT_a); alternate functions include TIM1_CH3N, TIM3_CH4, TIM8_CH3N, DFSDM1_DATIN0, USART3_RTS_DE and LPUART1_RTS_DE, and COMP1_INM and ADC1_IN16 are additional functions."
      },
      {
        "number": "M7",
        "name": "PE7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_ETR, DFSDM1_DATIN2, LCD_B6, FMC_D4 and SAI1_SD_B."
      },
      {
        "number": "M8",
        "name": "PE9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH1, DFSDM1_CKOUT, LCD_G2, FMC_D6 and SAI1_FS_B."
      },
      {
        "number": "M9",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH2, DFSDM1_CKIN4, TSC_G5_IO2, OCTOSPIM_P1_NCS and FMC_D8."
      },
      {
        "number": "M10",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH3, SPI1_SCK, DFSDM1_CKIN5, TSC_G5_IO4, OCTOSPIM_P1_IO1 and FMC_D10."
      },
      {
        "number": "M11",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_CH4, TIM1_BKIN2, SPI1_MISO, OCTOSPIM_P1_IO2 and FMC_D11."
      },
      {
        "number": "M12",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O; alternate functions include TIM1_BKIN, SPI1_MOSI, OCTOSPIM_P1_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: The MPN STM32L4S5QII6 maps to the UFBGA132 (7 x 7 mm) package per the ordering scheme on page 271 (Q; Table 15 is shared by the STM32L4S5, S7 and S9 variants. Some listed alternate functions (LCD_*, FMC; The source pin type is I-O with RST structure, mapped here to bidirectional. The datasheet describes"
        ],
        "pages_sent": 100,
        "cost_usd": 0.6205,
        "at": "2026-10-08T11:55:40"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588951815719702528",
        "pages": 273,
        "sha256": "09c1f7f04962417f",
        "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": "stm32l4s5qii6.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": "stm32l4s5qii6-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": "c0c1cb7de8552bb4765c41d41ae231bd32a46387afa857573a7c3c5a5b1374a8",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}