STM32L051K8U6

{
  "slug": "stm32l051k8u6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32l051k8u6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "README.md",
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    "stm32l051k8u6.kicad_mod",
    "stm32l051k8u6.glb",
    "stm32l051k8u6.step",
    "stm32l051k8u6.lbr",
    "docs/hero.png",
    "docs/stm32l051k8u6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "component": {
    "mpn": "STM32L051K8U6",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-32(5x5)",
    "pin_count": 33,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586181645652779008",
    "parts": {
      "symbol": "stm32l051k8u6.kicad_sym",
      "footprint": "stm32l051k8u6.kicad_mod",
      "model_3d": "stm32l051k8u6-etched.glb",
      "model_3d_plain": "stm32l051k8u6.glb",
      "model_3d_step": "stm32l051k8u6-etched.step",
      "model_3d_step_plain": "stm32l051k8u6.step",
      "lbr": "stm32l051k8u6.lbr"
    },
    "distributor_links": {
      "lcsc": "C94770",
      "digikey": "497-17490-ND",
      "mouser": "511-STM32L051K8U6"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T17:36:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17490-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L051K8U6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply, +1.8V to +3.6V"
      },
      {
        "number": "2",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "Port C pin 14, OSC32_IN function for 32 kHz oscillator input"
      },
      {
        "number": "3",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Port C pin 15, OSC32_OUT function for 32 kHz oscillator output"
      },
      {
        "number": "4",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset pin with internal pull-up and embedded filter"
      },
      {
        "number": "5",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply, +1.65V to +3.6V"
      },
      {
        "number": "6",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A pin 0, can be used as TIM2_CH1, USART2_CTS, COMP1_INM6, or ADC_IN0"
      },
      {
        "number": "7",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A pin 1, can be used as TIM2_CH2, USART2_RTS_DE, COMP1_INP, or ADC_IN1"
      },
      {
        "number": "8",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A pin 2, can be used as TIM21_CH1, TIM2_CH3, USART2_TX, COMP2_INM6, or ADC_IN2"
      },
      {
        "number": "9",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A pin 3, can be used as TIM21_CH2, TIM2_CH4, USART2_RX, COMP2_INP, or ADC_IN3"
      },
      {
        "number": "10",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A pin 4, can be used as SPI1_NSS, USART2_CK, TIM22_ETR, COMP1_INM4, COMP2_INM4, or ADC_IN4"
      },
      {
        "number": "11",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A pin 5, can be used as SPI1_SCK, TIM2_ETR, TIM2_CH1, COMP1_INM5, COMP2_INM5, or ADC_IN5"
      },
      {
        "number": "12",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A pin 6, 5V tolerant, can be used as SPI1_MISO, LPUART1_CTS, TIM22_CH1, or ADC_IN6"
      },
      {
        "number": "13",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Port A pin 7, 5V tolerant, can be used as SPI1_MOSI, TIM22_CH2, or ADC_IN7"
      },
      {
        "number": "14",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B pin 0, 5V tolerant, can be used as ADC_IN8 or VREF_OUT"
      },
      {
        "number": "15",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B pin 1, 5V tolerant, can be used as LPUART1_RTS_DE, ADC_IN9, or VREF_OUT"
      },
      {
        "number": "16",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B pin 2, 5V tolerant, can be used as LPTIM1_OUT"
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply, +1.8V to +3.6V"
      },
      {
        "number": "18",
        "name": "PA8",
        "type": "bidirectional",
        "description": "Port A pin 8, 5V tolerant, can be used as MCO or USART1_CK"
      },
      {
        "number": "19",
        "name": "PA9",
        "type": "bidirectional",
        "description": "Port A pin 9, 5V tolerant, can be used as MCO or USART1_TX"
      },
      {
        "number": "20",
        "name": "PA10",
        "type": "bidirectional",
        "description": "Port A pin 10, 5V tolerant, can be used as USART1_RX"
      },
      {
        "number": "21",
        "name": "PA11",
        "type": "bidirectional",
        "description": "Port A pin 11, 5V tolerant, can be used as SPI1_MISO, USART1_CTS, or COMP1_OUT"
      },
      {
        "number": "22",
        "name": "PA12",
        "type": "bidirectional",
        "description": "Port A pin 12, 5V tolerant, can be used as SPI1_MOSI, USART1_RTS_DE, or COMP2_OUT"
      },
      {
        "number": "23",
        "name": "PA13",
        "type": "bidirectional",
        "description": "Port A pin 13, 5V tolerant, SWDIO function for serial wire debug"
      },
      {
        "number": "24",
        "name": "PA14",
        "type": "bidirectional",
        "description": "Port A pin 14, 5V tolerant, can be used as SWCLK or USART2_TX"
      },
      {
        "number": "25",
        "name": "PA15",
        "type": "bidirectional",
        "description": "Port A pin 15, 5V tolerant, can be used as SPI1_NSS, TIM2_ETR, USART2_RX, or TIM2_CH1"
      },
      {
        "number": "26",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B pin 3, 5V tolerant, can be used as SPI1_SCK, TIM2_CH2, with COMP2_INN function"
      },
      {
        "number": "27",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B pin 4, 5V tolerant, can be used as SPI1_MISO or TIM22_CH1, with COMP2_INP function"
      },
      {
        "number": "28",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B pin 5, 5V tolerant, can be used as SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, or TIM22_CH2, with COMP2_INP function"
      },
      {
        "number": "29",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B pin 6, Fast Mode+ capable, can be used as USART1_TX, I2C1_SCL, or LPTIM1_ETR, with COMP2_INP function"
      },
      {
        "number": "30",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B pin 7, Fast Mode+ capable, can be used as USART1_RX, I2C1_SDA, or LPTIM1_IN2, with COMP2_INP and PVD_IN functions"
      },
      {
        "number": "31",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot select pin for choosing boot from Flash, RAM, or System memory"
      },
      {
        "number": "32",
        "name": "PB8",
        "type": "bidirectional",
        "description": "Port B pin 8, Fast Mode+ capable, can be used as I2C1_SCL"
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: VSS/GND pins not explicitly listed in Table 15 for UFQFPN32 package. Datasheet shows '-' for all VSS; PC13 marked as 'not available' in footnote 1 (page 42) but Table 15 row 2 appears to show it assigne; VSSA (analog ground) not explicitly listed for UFQFPN32 in Table 15 (page 38 shows '-'). Package req"
        ],
        "pages_sent": 131,
        "cost_usd": 0.8177,
        "at": "2026-10-01T17:36:22"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586181645652779008",
        "pages": 131,
        "sha256": "457bab7943900413",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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  }
}