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Ray Set visibility: public fae253a 1d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32l151zet6",
  "title": "STM32L151ZET6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32l151zet6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32L151ZET6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-144(20x20)",
    "pin_count": 144,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922065549709312",
    "parts": {
      "symbol": "stm32l151zet6.kicad_sym",
      "footprint": "stm32l151zet6.kicad_mod",
      "model_3d": "stm32l151zet6-hero.glb",
      "model_3d_plain": "stm32l151zet6.glb",
      "model_3d_step": "stm32l151zet6-etched.step",
      "model_3d_step_plain": "stm32l151zet6.step",
      "lbr": "stm32l151zet6.lbr"
    },
    "distributor_links": {
      "lcsc": "C1337589",
      "digikey": "497-17859-ND",
      "mouser": "511-STM32L151ZET6"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T04:34:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17859-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L151ZET6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE2 after reset; alternate functions TIM3_ETR, LCD_SEG38, TRACECLK."
      },
      {
        "number": "2",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE3 after reset; alternate functions TIM3_CH1, LCD_SEG39, TRACED0."
      },
      {
        "number": "3",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE4 after reset; alternate functions TIM3_CH2, TRACED1."
      },
      {
        "number": "4",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE5 after reset; alternate functions TIM9_CH1, TRACED2."
      },
      {
        "number": "5",
        "name": "PE6-WKUP3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE6; alternate functions TIM9_CH2, TRACED3; additional functions WKUP3, RTC_TAMP3."
      },
      {
        "number": "6",
        "name": "VLCD",
        "type": "power_in",
        "description": "LCD power supply pin per Table 8; footnote 3 states it applies to STM32L152xE only and that on STM32L151xE devices this pin should be connected to VDD."
      },
      {
        "number": "7",
        "name": "PC13-WKUP2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC13; additional functions WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT."
      },
      {
        "number": "8",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PC14; becomes OSC32_IN only when the LSE oscillator is on (LSEON bit in RCC_CSR), otherwise usable as GPIO."
      },
      {
        "number": "9",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PC15; becomes OSC32_OUT only when the LSE oscillator is on (LSEON bit in RCC_CSR), otherwise usable as GPIO."
      },
      {
        "number": "10",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF0; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "11",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF1; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "12",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF2; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "13",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF3; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "14",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF4; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "15",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF5; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "16",
        "name": "VSS_5",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "17",
        "name": "VDD_5",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "18",
        "name": "PF6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF6; alternate functions TIM5_CH1, TIM5_ETR; additional function ADC_IN27."
      },
      {
        "number": "19",
        "name": "PF7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF7; alternate function TIM5_CH2; additional functions ADC_IN28, COMP1_INP."
      },
      {
        "number": "20",
        "name": "PF8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF8; alternate function TIM5_CH3; additional functions ADC_IN29, COMP1_INP."
      },
      {
        "number": "21",
        "name": "PF9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF9; alternate function TIM5_CH4; additional functions ADC_IN30, COMP1_INP."
      },
      {
        "number": "22",
        "name": "PF10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF10; additional functions ADC_IN31, COMP1_INP; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "23",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PH0; becomes OSC_IN only when the HSE oscillator is on (HSEON bit in RCC_CR), otherwise usable as GPIO."
      },
      {
        "number": "24",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PH1; becomes OSC_OUT only when the HSE oscillator is on (HSEON bit in RCC_CR), otherwise usable as GPIO."
      },
      {
        "number": "25",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with embedded weak pull-up resistor."
      },
      {
        "number": "26",
        "name": "PC0",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC0; alternate functions LCD_SEG18 and TIMx_IC1 (EVENTOUT); additional functions ADC_IN10, COMP1_INP."
      },
      {
        "number": "27",
        "name": "PC1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC1; alternate functions LCD_SEG19 and TIMx_IC2 (EVENTOUT); additional functions ADC_IN11, COMP1_INP."
      },
      {
        "number": "28",
        "name": "PC2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC2; alternate functions LCD_SEG20 and TIMx_IC3 (EVENTOUT); additional functions ADC_IN12, COMP1_INP."
      },
      {
        "number": "29",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PC3; alternate functions LCD_SEG21 and TIMx_IC4 (EVENTOUT); additional functions ADC_IN13, COMP1_INP."
      },
      {
        "number": "30",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin; section 6.1 states all voltages are referenced to VSS."
      },
      {
        "number": "31",
        "name": "VREF-",
        "type": "power_in",
        "description": "Negative reference voltage pin for the ADC; footnote 4 of Table 55 requires VSSA or VREF- to be tied to ground."
      },
      {
        "number": "32",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive ADC/DAC reference voltage input; Table 55 gives a minimum of 1.8 V and it may be grounded if neither the ADC nor the DAC is used."
      },
      {
        "number": "33",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin; Table 55 specifies VDDA from 1.8 V to 3.6 V."
      },
      {
        "number": "34",
        "name": "PA0-WKUP1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA0; alternate functions TIM2_CH1_ETR, TIM5_CH1, USART2_CTS; additional functions WKUP1, RTC_TAMP2, ADC_IN0, COMP1_INP."
      },
      {
        "number": "35",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA1; alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS, LCD_SEG0; additional functions ADC_IN1, COMP1_INP, OPAMP1_VINP."
      },
      {
        "number": "36",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA2; alternate functions TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, LCD_SEG1; additional functions ADC_IN2, COMP1_INP, OPAMP1_VINM."
      },
      {
        "number": "37",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PA3; alternate functions TIM2_CH4, TIM5_CH4, TIM9_CH2, USART2_RX, LCD_SEG2; additional functions ADC_IN3, COMP1_INP, OPAMP1_VOUT."
      },
      {
        "number": "38",
        "name": "VSS_4",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "39",
        "name": "VDD_4",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "40",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PA4; alternate functions SPI1_NSS, SPI3_NSS, I2S3_WS, USART2_CK; additional functions ADC_IN4, DAC_OUT1, COMP1_INP."
      },
      {
        "number": "41",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PA5; alternate functions TIM2_CH1_ETR, SPI1_SCK; additional functions ADC_IN5, DAC_OUT2, COMP1_INP."
      },
      {
        "number": "42",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA6; alternate functions TIM3_CH1, TIM10_CH1, SPI1_MISO, LCD_SEG3; additional functions ADC_IN6, COMP1_INP, OPAMP2_VINP."
      },
      {
        "number": "43",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA7; alternate functions TIM3_CH2, TIM11_CH1, SPI1_MOSI, LCD_SEG4; additional functions ADC_IN7, COMP1_INP, OPAMP2_VINM."
      },
      {
        "number": "44",
        "name": "PC4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC4; alternate functions LCD_SEG22, TIMx_IC1 (EVENTOUT); additional functions ADC_IN14, COMP1_INP."
      },
      {
        "number": "45",
        "name": "PC5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC5; alternate functions LCD_SEG23, TIMx_IC2 (EVENTOUT); additional functions ADC_IN15, COMP1_INP."
      },
      {
        "number": "46",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PB0; alternate functions TIM3_CH3, LCD_SEG5; additional functions ADC_IN8, COMP1_INP, OPAMP2_VOUT, VREF_OUT."
      },
      {
        "number": "47",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB1; alternate functions TIM3_CH4, LCD_SEG6; additional functions ADC_IN9, COMP1_INP, VREF_OUT."
      },
      {
        "number": "48",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB2/BOOT1; BOOT1 is listed as an alternate function and ADC_IN0b as an additional function."
      },
      {
        "number": "49",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF11; additional function ADC_IN1b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "50",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF12; additional function ADC_IN2b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "51",
        "name": "VSS_6",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "52",
        "name": "VDD_6",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "53",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF13; additional function ADC_IN3b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "54",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF14; additional function ADC_IN6b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "55",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PF15; additional function ADC_IN7b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "56",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG0; additional function ADC_IN8b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "57",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG1; additional function ADC_IN9b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "58",
        "name": "PE7",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PE7; additional functions ADC_IN22, COMP1_INP; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "59",
        "name": "PE8",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PE8; additional functions ADC_IN23, COMP1_INP; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "60",
        "name": "PE9",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PE9; alternate function TIM2_CH1_ETR; additional functions ADC_IN24, COMP1_INP."
      },
      {
        "number": "61",
        "name": "VSS_7",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "62",
        "name": "VDD_7",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "63",
        "name": "PE10",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O; default function PE10; alternate function TIM2_CH2; additional functions ADC_IN25, COMP1_INP."
      },
      {
        "number": "64",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE11; alternate function TIM2_CH3; no additional functions listed."
      },
      {
        "number": "65",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE12; alternate functions TIM2_CH4, SPI1_NSS."
      },
      {
        "number": "66",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE13; alternate function SPI1_SCK."
      },
      {
        "number": "67",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE14; alternate function SPI1_MISO."
      },
      {
        "number": "68",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE15; alternate function SPI1_MOSI."
      },
      {
        "number": "69",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB10; alternate functions TIM2_CH3, I2C2_SCL, USART3_TX, LCD_SEG10."
      },
      {
        "number": "70",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB11; alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, LCD_SEG11."
      },
      {
        "number": "71",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "72",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "73",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB12; alternate functions TIM10_CH1, I2C2_SMBA, SPI2_NSS, I2S2_WS, USART3_CK, LCD_SEG12; additional functions ADC_IN18, COMP1_INP."
      },
      {
        "number": "74",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB13; alternate functions TIM9_CH1, SPI2_SCK, I2S2_CK, USART3_CTS, LCD_SEG13; additional functions ADC_IN19, COMP1_INP."
      },
      {
        "number": "75",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB14; alternate functions TIM9_CH2, SPI2_MISO, USART3_RTS, LCD_SEG14; additional functions ADC_IN20, COMP1_INP."
      },
      {
        "number": "76",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB15; alternate functions TIM11_CH1, SPI2_MOSI, I2S2_SD, LCD_SEG15; additional functions ADC_IN21, COMP1_INP, RTC_REFIN."
      },
      {
        "number": "77",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD8; alternate functions USART3_TX, LCD_SEG28."
      },
      {
        "number": "78",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD9; alternate functions USART3_RX, LCD_SEG29."
      },
      {
        "number": "79",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD10; alternate functions USART3_CK, LCD_SEG30."
      },
      {
        "number": "80",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD11; alternate functions USART3_CTS, LCD_SEG31."
      },
      {
        "number": "81",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD12; alternate functions TIM4_CH1, USART3_RTS, LCD_SEG32."
      },
      {
        "number": "82",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD13; alternate functions TIM4_CH2, LCD_SEG33."
      },
      {
        "number": "83",
        "name": "VSS_8",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "84",
        "name": "VDD_8",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "85",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD14; alternate functions TIM4_CH3, LCD_SEG34."
      },
      {
        "number": "86",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD15; alternate functions TIM4_CH4, LCD_SEG35."
      },
      {
        "number": "87",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG2; additional function ADC_IN10b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "88",
        "name": "PG3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG3; additional function ADC_IN11b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "89",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG4; additional function ADC_IN12b; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "90",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG5; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "91",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG6; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "92",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG7; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "93",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG8; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "94",
        "name": "VSS_9",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "95",
        "name": "VDD_9",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "96",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC6; alternate functions TIM3_CH1, I2S2_MCK, LCD_SEG24."
      },
      {
        "number": "97",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC7; alternate functions TIM3_CH2, I2S3_MCK, LCD_SEG25."
      },
      {
        "number": "98",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC8; alternate functions TIM3_CH3, LCD_SEG26."
      },
      {
        "number": "99",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC9; alternate functions TIM3_CH4, LCD_SEG27."
      },
      {
        "number": "100",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA8; alternate functions USART1_CK, MCO, LCD_COM0."
      },
      {
        "number": "101",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA9; alternate functions USART1_TX, LCD_COM1."
      },
      {
        "number": "102",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA10; alternate functions USART1_RX, LCD_COM2."
      },
      {
        "number": "103",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA11; alternate functions USART1_CTS, SPI1_MISO; additional function USB_DM."
      },
      {
        "number": "104",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PA12; alternate functions USART1_RTS, SPI1_MOSI; additional function USB_DP."
      },
      {
        "number": "105",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function JTMS-SWDIO; JTMS-SWDIO is the SWJ debug data pin."
      },
      {
        "number": "106",
        "name": "PH2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PH2; no alternate or additional functions listed."
      },
      {
        "number": "107",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "108",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "109",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function JTCK-SWCLK; JTCK-SWCLK is the SWJ debug clock pin."
      },
      {
        "number": "110",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function JTDI; alternate functions TIM2_CH1_ETR, SPI1_NSS, SPI3_NSS, I2S3_WS, LCD_SEG17."
      },
      {
        "number": "111",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC10; alternate functions SPI3_SCK, I2S3_CK, USART3_TX, UART4_TX, LCD_SEG28, LCD_SEG40, LCD_COM4."
      },
      {
        "number": "112",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC11; alternate functions SPI3_MISO, USART3_RX, UART4_RX, LCD_SEG29, LCD_SEG41, LCD_COM5."
      },
      {
        "number": "113",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PC12; alternate functions SPI3_MOSI, I2S3_SD, USART3_CK, UART5_TX, LCD_SEG30, LCD_SEG42, LCD_COM6."
      },
      {
        "number": "114",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD0; alternate functions TIM9_CH1, SPI2_NSS, I2S2_WS."
      },
      {
        "number": "115",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD1; alternate functions SPI2_SCK, I2S2_CK."
      },
      {
        "number": "116",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD2; alternate functions TIM3_ETR, UART5_RX, LCD_SEG31, LCD_SEG43, LCD_COM7."
      },
      {
        "number": "117",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD3; alternate functions SPI2_MISO, USART2_CTS."
      },
      {
        "number": "118",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD4; alternate functions SPI2_MOSI, I2S2_SD, USART2_RTS."
      },
      {
        "number": "119",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD5; alternate function USART2_TX."
      },
      {
        "number": "120",
        "name": "VSS_10",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "121",
        "name": "VDD_10",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "122",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD6; alternate function USART2_RX."
      },
      {
        "number": "123",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PD7; alternate functions TIM9_CH2, USART2_CK."
      },
      {
        "number": "124",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG9; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "125",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG10; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "126",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG11; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "127",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG12; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "128",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG13; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "129",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG14; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "130",
        "name": "VSS_11",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "131",
        "name": "VDD_11",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      },
      {
        "number": "132",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PG15; EVENTOUT is the only alternate function listed."
      },
      {
        "number": "133",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function JTDO; alternate functions TIM2_CH2, SPI1_SCK, SPI3_SCK, I2S3_CK, LCD_SEG7; additional function COMP2_INM."
      },
      {
        "number": "134",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function NJTRST; alternate functions TIM3_CH1, SPI1_MISO, SPI3_MISO, LCD_SEG8, NJTRST; additional function COMP2_INP."
      },
      {
        "number": "135",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB5; alternate functions TIM3_CH2, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, I2S3_SD, LCD_SEG9; additional function COMP2_INP."
      },
      {
        "number": "136",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB6; alternate functions TIM4_CH1, I2C1_SCL, USART1_TX; additional function COMP2_INP."
      },
      {
        "number": "137",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB7; alternate functions TIM4_CH2, I2C1_SDA, USART1_RX; additional functions COMP2_INP, PVD_IN."
      },
      {
        "number": "138",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 input pin (type B in Table 7 legend)."
      },
      {
        "number": "139",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB8; alternate functions TIM4_CH3, TIM10_CH1, I2C1_SCL, LCD_SEG16."
      },
      {
        "number": "140",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PB9; alternate functions TIM4_CH4, TIM11_CH1, I2C1_SDA, LCD_COM3."
      },
      {
        "number": "141",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE0; alternate functions TIM4_ETR, TIM10_CH1, LCD_SEG36."
      },
      {
        "number": "142",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O; default function PE1; alternate functions TIM11_CH1, LCD_SEG37."
      },
      {
        "number": "143",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to VSS per section 6.1."
      },
      {
        "number": "144",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital supply pin; device supply range is 1.65 V to 3.6 V."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
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        "guard_notes": [
          "extractor flagged: VLCD footnote 3 of Table 8 says it applies to STM32L152xE only; for STM32L151xE (this MPN, STM32L151; Table 8 lists LCD_SEG/LCD_COM alternate functions for these pins, but the datasheet features state t; PC14/PC15 and PH0/PH1 are only OSC32/OSC oscillator pins while the LSE/HSE oscillator is enabled (fo"
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        "pages": 136,
        "sha256": "6ba5d188efc840bc",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-144(20x20)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "144"
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