STM32L151C8U6A

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32l151c8u6a",
  "title": "STM32L151C8U6A",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). 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",
    "stm32l151c8u6a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32L151C8U6A",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-48(7x7)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588933989025792000",
    "parts": {
      "symbol": "stm32l151c8u6a.kicad_sym",
      "footprint": "stm32l151c8u6a.kicad_mod",
      "model_3d": "stm32l151c8u6a-hero.glb",
      "model_3d_plain": "stm32l151c8u6a.glb",
      "model_3d_step": "stm32l151c8u6a-etched.step",
      "model_3d_step_plain": "stm32l151c8u6a.step",
      "lbr": "stm32l151c8u6a.lbr"
    },
    "distributor_links": {
      "lcsc": "C1339205",
      "digikey": "497-18952-ND",
      "mouser": "511-STM32L151C8U6A"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T13:50:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18952-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L151C8U6A",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VLCD",
        "type": "power_in",
        "description": "LCD controller supply rail; the datasheet states this pin applies to STM32L152 devices only and must be connected to VDD on STM32L151 devices."
      },
      {
        "number": "2",
        "name": "PC13-WKUP2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions RTC_TAMP1, RTC_TS and RTC_OUT, and wakeup input WKUP2."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O that is OSC32_IN when the LSE oscillator is on and can be used as PC14 GPIO when the LSE is off."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O that is OSC32_OUT when the LSE oscillator is on and can be used as PC15 GPIO when the LSE is off."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O that is OSC_IN when the HSE oscillator is on and can be used as PH0 GPIO when the HSE is off."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O that is OSC_OUT when the HSE oscillator is on and can be used as PH1 GPIO when the HSE is off."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with an embedded weak pull-up resistor."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin for the analog supply domain."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin for the analog blocks (ADC, DAC and comparators)."
      },
      {
        "number": "10",
        "name": "PA0-WKUP1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART2_CTS, TIM2_CH1_ETR, ADC_IN0, COMP1_INP, wakeup WKUP1 and RTC_TAMP2."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART2_RTS, TIM2_CH2, LCD_SEG0, ADC_IN1 and COMP1_INP."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART2_TX, TIM2_CH3, TIM9_CH1, LCD_SEG1, ADC_IN2 and COMP1_INP."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O with alternate functions USART2_RX, TIM2_CH4, TIM9_CH2, LCD_SEG2, ADC_IN3 and COMP1_INP."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O with alternate functions SPI1_NSS, USART2_CK, ADC_IN4, DAC_OUT1 and COMP1_INP."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O with alternate functions SPI1_SCK, TIM2_CH1_ETR, ADC_IN5, DAC_OUT2 and COMP1_INP."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions SPI1_MISO, TIM3_CH1, LCD_SEG3, TIM10_CH1, ADC_IN6 and COMP1_INP."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions SPI1_MOSI, TIM3_CH2, LCD_SEG4, TIM11_CH1, ADC_IN7 and COMP1_INP."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O with alternate functions TIM3_CH3, LCD_SEG5, ADC_IN8, COMP1_INP, VREF_OUT and VLCDRAIL3."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions TIM3_CH4, LCD_SEG6, ADC_IN9, COMP1_INP and VREF_OUT."
      },
      {
        "number": "20",
        "name": "PB2/BOOT1",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O that also serves as the BOOT1 pin and the VLCDRAIL1 function."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions I2C2_SCL, USART3_TX, TIM2_CH3 and LCD_SEG10."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions I2C2_SDA, USART3_RX, TIM2_CH4 and LCD_SEG11."
      },
      {
        "number": "23",
        "name": "VSS_1",
        "type": "power_in",
        "description": "Ground pin of the digital supply domain."
      },
      {
        "number": "24",
        "name": "VDD_1",
        "type": "power_in",
        "description": "Digital power supply pin of the device."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions SPI2_NSS, I2C2_SMBA, USART3_CK, LCD_SEG12, TIM10_CH1, ADC_IN18, COMP1_INP and VLCDRAIL2."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions SPI2_SCK, USART3_CTS, LCD_SEG13, TIM9_CH1, ADC_IN19 and COMP1_INP."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions SPI2_MISO, USART3_RTS, LCD_SEG14, TIM9_CH2, ADC_IN20 and COMP1_INP."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions SPI2_MOSI, LCD_SEG15, TIM11_CH1, ADC_IN21, COMP1_INP and RTC_REFIN."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART1_CK, MCO and LCD_COM0."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART1_TX and LCD_COM1."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART1_RX and LCD_COM2."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART1_CTS, SPI1_MISO and USB_DM."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions USART1_RTS, SPI1_MOSI and USB_DP."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O whose main function after reset is JTMS-SWDIO (serial wire debug data)."
      },
      {
        "number": "35",
        "name": "VSS_2",
        "type": "power_in",
        "description": "Ground pin of the digital supply domain."
      },
      {
        "number": "36",
        "name": "VDD_2",
        "type": "power_in",
        "description": "Digital power supply pin of the device."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O whose main function after reset is JTCK-SWCLK (serial wire debug clock)."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions JTDI, TIM2_CH1_ETR, SPI1_NSS and LCD_SEG17."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions JTDO, TIM2_CH2, SPI1_SCK, LCD_SEG7 and COMP2_INM."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions NJTRST, TIM3_CH1, SPI1_MISO, LCD_SEG8 and COMP2_INP."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions I2C1_SMBA, TIM3_CH2, SPI1_MOSI, LCD_SEG9 and COMP2_INP."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions I2C1_SCL, TIM4_CH1 and USART1_TX."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions I2C1_SDA, TIM4_CH2, USART1_RX and PVD_IN."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 pin (input-only, boot-mode selection)."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions TIM4_CH3, I2C1_SCL, LCD_SEG16 and TIM10_CH1."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O with alternate functions TIM4_CH4, I2C1_SDA, LCD_COM3 and TIM11_CH1."
      },
      {
        "number": "47",
        "name": "VSS_3",
        "type": "power_in",
        "description": "Ground pin of the digital supply domain."
      },
      {
        "number": "48",
        "name": "VDD_3",
        "type": "power_in",
        "description": "Digital power supply pin of the device."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 UFQFPN48 package has an exposed die pad on its underside (page 115, notes 2-3). It has no pin nu; Pin 1 (VLCD) is listed as a supply pin for STM32L152 only. Note 3 (page 45) states that on STM32L151; The UFQFPN48 pinout has no VREF+ or VREF- pin. Table 55 note 3 says VREF+ can be internally connecte",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 60,
        "cost_usd": 0.2639,
        "at": "2026-10-11T13:50:02"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588933989025792000",
        "pages": 130,
        "sha256": "e5e0ab791f4e7879",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "stm32l151c8u6a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32l151c8u6a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7f9fbf71b1a42d7e6baaa7de82834662fb9cd97c360114f9399521ce97e06284",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "UFQFPN-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "49"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32l151c8u6a"
  ],
  "discovery_pitch": "STM32L151C8U6A (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "stm32l151c8u6a.lbr",
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    "docs/stm32l151c8u6a-datasheet.pdf",
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    "stm32l151c8u6a-hero.overlay.json"
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  "visibility": {
    "public": true
  }
}