STM32L071CZU6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32l071czu6",
  "title": "STM32L071CZU6",
  "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",
    "stm32l071czu6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32L071CZU6",
    "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/8588886252883599360",
    "parts": {
      "symbol": "stm32l071czu6.kicad_sym",
      "footprint": "stm32l071czu6.kicad_mod",
      "model_3d": "stm32l071czu6-hero.glb",
      "model_3d_plain": "stm32l071czu6.glb",
      "model_3d_step": "stm32l071czu6-etched.step",
      "model_3d_step_plain": "stm32l071czu6.step",
      "lbr": "stm32l071czu6.lbr"
    },
    "distributor_links": {
      "lcsc": "C529425",
      "digikey": "497-STM32L071CZU6-ND",
      "mouser": "511-STM32L071CZU6"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T01:13:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32L071CZU6-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L071CZU6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; the family supply range is 1.65 V to 3.6 V, while orderable parts without the 'D' option are specified at 1.8 V to 3.6 V with BOR enabled."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O (additional function RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2); like all I/Os it is a floating input during and after reset unless noted."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O whose additional function is OSC32_IN, the 32.768 kHz LSE oscillator input."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O whose additional function is OSC32_OUT, the 32.768 kHz LSE oscillator output."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O whose additional function is OSC_IN, the 1 to 25 MHz HSE crystal oscillator input."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O whose additional function is OSC_OUT, the 1 to 25 MHz HSE crystal oscillator output."
      },
      {
        "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 ADC, comparators and reference circuitry."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin for the ADC, comparators and internal reference."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "I/O with structure printed as TTa; alternate functions TIM2_CH1, USART2_CTS, TIM2_ETR, USART4_TX, COMP1_OUT; additional functions COMP1_INM, ADC_IN0, RTC_TAMP2/WKUP1."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions EVENTOUT, TIM2_CH2, USART2_RTS/USART2_DE, TIM21_ETR, USART4_RX; additional functions COMP1_INP, ADC_IN1."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions TIM21_CH1, TIM2_CH3, USART2_TX, LPUART1_TX, COMP2_OUT; additional functions COMP2_INM, ADC_IN2."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions TIM21_CH2, TIM2_CH4, USART2_RX, LPUART1_RX; additional functions COMP2_INP, ADC_IN3."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O; alternate functions SPI1_NSS, USART2_CK, TIM22_ETR; additional functions COMP1_INM, COMP2_INM, ADC_IN4."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O; alternate functions SPI1_SCK, TIM2_ETR, TIM2_CH1; additional functions COMP1_INM, COMP2_INM, ADC_IN5."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI1_MISO, TIM3_CH1, LPUART1_CTS, TIM22_CH1, EVENTOUT, COMP1_OUT; additional function ADC_IN6."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI1_MOSI, TIM3_CH2, TIM22_CH2, EVENTOUT, COMP2_OUT; additional function ADC_IN7."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions EVENTOUT, TIM3_CH3; additional functions ADC_IN8 and VREF_OUT."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions TIM3_CH4, LPUART1_RTS/LPUART1_DE; additional functions ADC_IN9 and VREF_OUT."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions LPTIM1_OUT and I2C3_SMBA."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions TIM2_CH3, LPUART1_TX, SPI2_SCK, I2C2_SCL, LPUART1_RX."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions EVENTOUT, TIM2_CH4, LPUART1_RX, I2C2_SDA, LPUART1_TX."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the digital supply domain."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; see pin 1 for the supply range."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI2_NSS/I2S2_WS, LPUART1_RTS/LPUART1_DE, I2C2_SMBA, EVENTOUT."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions SPI2_SCK/I2S2_CK, MCO, LPUART1_CTS, I2C2_SCL, TIM21_CH1."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions SPI2_MISO/I2S2_MCK, RTC_OUT, LPUART1_RTS/LPUART1_DE, I2C2_SDA, TIM21_CH2."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI2_MOSI/I2S2_SD and RTC_REFIN."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions MCO, EVENTOUT, USART1_CK, I2C3_SCL."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions MCO, USART1_TX, I2C1_SCL, I2C3_SMBA."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions USART1_RX and I2C1_SDA."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O supplied by VDDIO2; alternate functions SPI1_MISO, EVENTOUT, USART1_CTS, COMP1_OUT."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O supplied by VDDIO2; alternate functions SPI1_MOSI, EVENTOUT, USART1_RTS/USART1_DE, COMP2_OUT."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SWDIO (serial wire debug data) and LPUART1_RX."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the digital supply domain."
      },
      {
        "number": "36",
        "name": "VDDIO2",
        "type": "power_in",
        "description": "Supply pin for the PA11 and PA12 I/Os, per the datasheet note on the pinout figures."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SWCLK (serial wire debug clock), USART2_TX, LPUART1_TX."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX, TIM2_CH1, USART4_RTS/USART4_DE."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI1_SCK, TIM2_CH2, EVENTOUT, USART1_RTS/USART1_DE, USART5_TX; additional function COMP2_INM."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions SPI1_MISO, TIM3_CH1, TIM22_CH1, USART1_CTS, USART5_RX, I2C3_SDA; additional function COMP2_INP."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O; alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM3_CH2/TIM22_CH2, USART1_CK, USART5_CK, USART5_RTS/USART5_DE; additional function COMP2_INP."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR; additional function COMP2_INP."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2, USART4_CTS; additional functions COMP2_INP and VREF_PVD_IN."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 boot-mode selection pin (type I, no alternate functions listed)."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate function I2C1_SCL."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (Fm+ capable); alternate functions EVENTOUT, I2C1_SDA, SPI2_NSS/I2S2_WS."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the digital supply domain."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; see pin 1 for the supply range."
      },
      {
        "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 (Figure 58, note 3). It is not a number; Supply range ambiguity: the family is specified at 1.65 V to 3.6 V (features and option 'D'), but th; PA0 I/O structure is printed as 'TTa' in Table 15, which is not defined in Table 14 (legend lists FT",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 74,
        "cost_usd": 0.3092,
        "at": "2026-10-08T01:13:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886252883599360",
        "pages": 148,
        "sha256": "f413c7ce36b98e6c",
        "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": [
      {
        "file": "stm32l071czu6.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": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32l071czu6-etched.step",
        "role": "eda",
        "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": "89df3b415f476981a353282ad8245f278f5d8a26b2557b70f453cb2cbb0d53bc",
        "checked": "2026-10-08",
        "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": [
    "stm32l071czu6"
  ],
  "discovery_pitch": "STM32L071CZU6 (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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    "stm32l071czu6.step",
    "stm32l071czu6.lbr",
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    "docs/stm32l071czu6-datasheet.pdf",
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  "visibility": {
    "public": true
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}