STM32L071K8U6

{
  "slug": "stm32l071k8u6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Global Sourcing Parts, UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "global sourcing parts",
    "stm32l071k8u6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "docs/stm32l071k8u6-datasheet.pdf",
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  "component": {
    "mpn": "STM32L071K8U6",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-32(5x5)",
    "pin_count": 33,
    "category": "Global Sourcing Parts",
    "subcategory": "Global Sourcing Parts",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886707911868416",
    "parts": {
      "symbol": "stm32l071k8u6.kicad_sym",
      "footprint": "stm32l071k8u6.kicad_mod",
      "model_3d": "stm32l071k8u6-hero.glb",
      "model_3d_plain": "stm32l071k8u6.glb",
      "model_3d_step": "stm32l071k8u6-etched.step",
      "model_3d_step_plain": "stm32l071k8u6.step",
      "lbr": "stm32l071k8u6.lbr"
    },
    "distributor_links": {
      "lcsc": 426414,
      "digikey": "497-18576-ND",
      "mouser": "511-STM32L071K8U6"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T21:13:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18576-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L071K8U6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V tolerant (FT) I/O PC14 that also serves as the OSC32_IN additional function for the 32 kHz LSE oscillator; no alternate functions listed."
      },
      {
        "number": "2",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O PC15 that also serves as the OSC32_OUT additional function for the 32 kHz LSE oscillator."
      },
      {
        "number": "3",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with embedded weak pull-up resistor."
      },
      {
        "number": "4",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground supply pin."
      },
      {
        "number": "5",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply pin; minimum 1.65 V per the revision history for Table 25."
      },
      {
        "number": "6",
        "name": "PA0",
        "type": "bidirectional",
        "description": "I/O (TT_a structure) with TIM2_CH1, USART2_CTS, TIM2_ETR, USART4_TX and COMP1_OUT alternate functions, plus COMP1_INM, ADC_IN0 and RTC_TAMP2/WKUP1 additional functions."
      },
      {
        "number": "7",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with EVENTOUT, TIM2_CH2, USART2_RTS/DE, TIM21_ETR and USART4_RX alternate functions, plus COMP1_INP and ADC_IN1."
      },
      {
        "number": "8",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with TIM21_CH1, TIM2_CH3, USART2_TX, LPUART1_TX and COMP2_OUT alternate functions, plus COMP2_INM and ADC_IN2."
      },
      {
        "number": "9",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with TIM21_CH2, TIM2_CH4, USART2_RX and LPUART1_RX alternate functions, plus COMP2_INP and ADC_IN3."
      },
      {
        "number": "10",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O with SPI1_NSS, USART2_CK and TIM22_ETR alternate functions, plus COMP1_INM, COMP2_INM and ADC_IN4."
      },
      {
        "number": "11",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Standard 3.3 V (TC) I/O with SPI1_SCK, TIM2_ETR and TIM2_CH1 alternate functions, plus COMP1_INM, COMP2_INM and ADC_IN5."
      },
      {
        "number": "12",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with SPI1_MISO, TIM3_CH1, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT alternate functions, plus ADC_IN6."
      },
      {
        "number": "13",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with SPI1_MOSI, TIM3_CH2, TIM22_CH2, EVENTOUT and COMP2_OUT alternate functions, plus ADC_IN7."
      },
      {
        "number": "14",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with EVENTOUT and TIM3_CH3 alternate functions, plus ADC_IN8 and VREF_OUT."
      },
      {
        "number": "15",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with TIM3_CH4 and LPUART1_RTS/DE alternate functions, plus ADC_IN9 and VREF_OUT."
      },
      {
        "number": "16",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground supply pin."
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply pin; device supply range is 1.65 V to 3.6 V (1.8 V to 3.6 V on versions without option D)."
      },
      {
        "number": "18",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant, Fast Mode Plus capable I/O with MCO, EVENTOUT, USART1_CK and I2C3_SCL alternate functions."
      },
      {
        "number": "19",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant, Fast Mode Plus capable I/O with MCO, USART1_TX, I2C1_SCL and I2C3_SMBA alternate functions."
      },
      {
        "number": "20",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant, Fast Mode Plus capable I/O with USART1_RX and I2C1_SDA alternate functions."
      },
      {
        "number": "21",
        "name": "PA11",
        "type": "bidirectional",
        "description": "I/O supplied by VDDIO2 with SPI1_MISO, EVENTOUT, USART1_CTS and COMP1_OUT alternate functions."
      },
      {
        "number": "22",
        "name": "PA12",
        "type": "bidirectional",
        "description": "I/O supplied by VDDIO2 with SPI1_MOSI, EVENTOUT, USART1_RTS/DE and COMP2_OUT alternate functions."
      },
      {
        "number": "23",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant I/O that is SWDIO (serial wire debug data) after reset, with LPUART1_RX as an alternate function."
      },
      {
        "number": "24",
        "name": "VDDIO2",
        "type": "power_in",
        "description": "Separate supply pin for the PA11 and PA12 I/Os."
      },
      {
        "number": "25",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant I/O that is SWCLK (serial wire debug clock) after reset, with USART2_TX and LPUART1_TX alternate functions."
      },
      {
        "number": "26",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant, Fast Mode Plus capable I/O with SPI1_MISO, TIM3_CH1, TIM22_CH1, USART1_CTS, USART5_RX and I2C3_SDA alternate functions, plus COMP2_INP."
      },
      {
        "number": "27",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant I/O with SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM3_CH2/TIM22_CH2, USART1_CK, USART5_CK and USART5_RTS/DE alternate functions, plus COMP2_INP."
      },
      {
        "number": "28",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant, Fast Mode Plus capable I/O with USART1_TX, I2C1_SCL and LPTIM1_ETR alternate functions, plus COMP2_INP."
      },
      {
        "number": "29",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant, Fast Mode Plus capable I/O with USART1_RX, I2C1_SDA, LPTIM1_IN2 and USART4_CTS alternate functions, plus COMP2_INP and VREF_PVD_IN."
      },
      {
        "number": "30",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated boot mode selection input pin (I/O structure B)."
      },
      {
        "number": "31",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground supply pin."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply pin; device supply range is 1.65 V to 3.6 V (1.8 V to 3.6 V on versions without option D)."
      },
      {
        "number": "33",
        "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-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: VREF+ and VREF- reference pins are not present in UFQFPN32 package variant; these are available only; PA11 and PA12 are supplied by dedicated VDDIO2 power pin (pin 24) rather than main VDD; ensure VDDIO; Verify that PC14-OSC32_IN (pin 2) designation; datasheet shows this as 'PC14-OSC32_IN (PC14)' indica",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 70,
        "cost_usd": 0.4812,
        "at": "2026-10-05T21:12:53"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886707911868416",
        "pages": 144,
        "sha256": "da3ebcbd4ae9560f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  }
}