STM32F071CBU7

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f071cbu7",
  "title": "STM32F071CBU7",
  "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",
    "stm32f071cbu7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32F071CBU7",
    "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/8588923853950603264",
    "parts": {
      "symbol": "stm32f071cbu7.kicad_sym",
      "footprint": "stm32f071cbu7.kicad_mod",
      "model_3d": "stm32f071cbu7-hero.glb",
      "model_3d_plain": "stm32f071cbu7.glb",
      "model_3d_step": "stm32f071cbu7-etched.step",
      "model_3d_step_plain": "stm32f071cbu7.step",
      "lbr": "stm32f071cbu7.lbr"
    },
    "distributor_links": {
      "lcsc": "C1341858",
      "digikey": "STM32F071CBU7-ND",
      "mouser": "511-STM32F071CBU7"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T03:26:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "STM32F071CBU7-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F071CBU7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply for the RTC, external 32 kHz oscillator and backup registers through the power switch when VDD is not present, specified at 1.65 to 3.6 V."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "Standard 3.3 V I/O supplied through the power switch, limited to a 3 mA sink, 2 MHz maximum output speed at 30 pF load, and not usable as a current source; also provides WKUP2, RTC_TAMP1, RTC_TS and RTC_OUT."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "Standard 3.3 V I/O supplied through the power switch with the same 3 mA limit as PC13, and used as the 32 kHz oscillator input OSC32_IN."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V I/O supplied through the power switch with the same 3 mA limit as PC13, and used as the 32 kHz oscillator output OSC32_OUT."
      },
      {
        "number": "5",
        "name": "PF0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O that is also the external high-speed oscillator input OSC_IN, with CRS_SYNC alternate function."
      },
      {
        "number": "6",
        "name": "PF1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O that is also the external high-speed oscillator output OSC_OUT."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional active-low reset pin with embedded weak pull-up, acting as device reset input and internal reset output."
      },
      {
        "number": "8",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply, must be equal to or higher than VDD and established first, with a minimum of 2.4 V when the ADC or DAC is used, up to 3.6 V."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN0, with WKUP1, RTC_TAMP2 and COMP1_OUT functions and USART2_CTS, TIM2_CH1_ETR, TSC_G1_IO1 and USART4_TX alternate functions."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN1 and COMP1_INP, with USART2_RTS, TIM2_CH2, TIM15_CH1N, TSC_G1_IO2, USART4_RX and EVENTOUT alternate functions."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN2, COMP2_OUT, COMP2_INM6 and WKUP4, with USART2_TX, TIM2_CH3, TIM15_CH1 and TSC_G1_IO3 alternate functions."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN3 and COMP2_INP, with USART2_RX, TIM2_CH4, TIM15_CH2 and TSC_G1_IO4 alternate functions."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN4 and DAC_OUT1, with SPI1_NSS, I2S1_WS, USART2_CK, TIM14_CH1 and TSC_G2_IO1 alternate functions."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN5 and DAC_OUT2, with SPI1_SCK, I2S1_CK, CEC, TIM2_CH1_ETR and TSC_G2_IO2 alternate functions."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN6, with SPI1_MISO, I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1, COMP1_OUT, TSC_G2_IO3, EVENTOUT and USART3_CTS alternate functions."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN7, with SPI1_MOSI, I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1, COMP2_OUT, TSC_G2_IO4 and EVENTOUT alternate functions."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN8, with TIM3_CH3, TIM1_CH2N, TSC_G3_IO2, EVENTOUT and USART3_CK alternate functions."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "3.3 V-tolerant (TTa) I/O connected directly to the ADC, providing ADC_IN9, with TIM3_CH4, USART3_RTS, TIM14_CH1, TIM1_CH3N and TSC_G3_IO3 alternate functions."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) standard I/O with TSC_G3_IO4 touch-sensing function."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with SPI2_SCK, I2C2_SCL, USART3_TX, CEC, TSC_SYNC and TIM2_CH3 alternate functions."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with I2C2_SDA, USART3_RX, TIM2_CH4, EVENTOUT and TSC_G6_IO1 alternate functions."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, 2.0 to 3.6 V, which also supplies the internal regulator."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with SPI2_NSS, I2S2_WS, USART3_CK, TIM1_BKIN, TIM15_BKIN, TSC_G6_IO2 and EVENTOUT alternate functions."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant, Fast-mode Plus capable (FTf) I/O with SPI2_SCK, I2S2_CK, I2C2_SCL, USART3_CTS, TIM1_CH1N and TSC_G6_IO3 alternate functions."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant, Fast-mode Plus capable (FTf) I/O with SPI2_MISO, I2S2_MCK, I2C2_SDA, USART3_RTS, TIM1_CH2N, TIM15_CH1 and TSC_G6_IO4 alternate functions."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with SPI2_MOSI, I2S2_SD, TIM1_CH3N, TIM15_CH1N and TIM15_CH2 alternate functions, also WKUP7 and RTC_REFIN."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2, with USART1_CK, TIM1_CH1, EVENTOUT, MCO and CRS_SYNC alternate functions."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2, with USART1_TX, TIM1_CH2, TIM15_BKIN and TSC_G4_IO1 alternate functions."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2, with USART1_RX, TIM1_CH3, TIM17_BKIN and TSC_G4_IO2 alternate functions."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2, with USART1_CTS, TIM1_CH4, COMP1_OUT, TSC_G4_IO3 and EVENTOUT alternate functions."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2, with USART1_RTS, TIM1_ETR, COMP2_OUT, TSC_G4_IO4 and EVENTOUT alternate functions."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2 that is configured as SWDIO with internal pull-up after reset, with IR_OUT alternate function."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "36",
        "name": "VDDIO2",
        "type": "power_in",
        "description": "Digital power supply for the marked I/Os, 1.65 to 3.6 V, independent from VDD or VDDA but must not be provided without a valid supply on VDD."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2 that is configured as SWCLK with internal pull-down after reset, with USART2_TX alternate function."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied by VDDIO2 with SPI1_NSS, I2S1_WS, USART2_RX, USART4_RTS, TIM2_CH1_ETR and EVENTOUT alternate functions."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with SPI1_SCK, I2S1_CK, TIM2_CH2, TSC_G5_IO1 and EVENTOUT alternate functions."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with SPI1_MISO, I2S1_MCK, TIM17_BKIN, TIM3_CH1, TSC_G5_IO2 and EVENTOUT alternate functions."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O with SPI1_MOSI, I2S1_SD, I2C1_SMBA, TIM16_BKIN, TIM3_CH2 and WKUP6 functions."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant, Fast-mode Plus capable (FTf) I/O with I2C1_SCL, USART1_TX, TIM16_CH1N and TSC_G5_IO3 alternate functions."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant, Fast-mode Plus capable (FTf) I/O with I2C1_SDA, USART1_RX, USART4_CTS, TIM17_CH1N and TSC_G5_IO4 alternate functions."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 pin used together with the boot selector option bit to select the boot memory (user Flash, system memory or embedded SRAM) at startup."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant, Fast-mode Plus capable (FTf) I/O with I2C1_SCL, CEC, TIM16_CH1 and TSC_SYNC alternate functions."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant, Fast-mode Plus capable (FTf) I/O with SPI2_NSS, I2S2_WS, I2C1_SDA, IR_OUT, TIM17_CH1 and EVENTOUT alternate functions."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, 2.0 to 3.6 V, which also supplies the internal regulator."
      },
      {
        "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 exposed die pad on the underside (figure 8 and package outline, page 112) is not given ; Pin-to-number mapping was taken from Table 14 (column LQFP48/UFQFPN48, pages 35-41), which is the au; NRST is typed bidirectional because the datasheet lists it as type I/O with RST structure (reset inp",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 60,
        "cost_usd": 0.2649,
        "at": "2026-10-11T03:26:35"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923853950603264",
        "pages": 122,
        "sha256": "054f3806403d4305",
        "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": "stm32f071cbu7.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": "stm32f071cbu7-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": "e65defd97d4b1fec19a2ded313267d19994c748cfef0c84b8ac8b4df99eca614",
        "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": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "stm32f071cbu7"
  ],
  "discovery_pitch": "STM32F071CBU7 (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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    "stm32f071cbu7.lbr",
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    "docs/stm32f071cbu7-datasheet.pdf",
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}