STM32F051R8T6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f051r8t6",
  "title": "STM32F051R8T6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "stm32f051r8t6"
  ],
  "component": {
    "mpn": "STM32F051R8T6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://www.st.com/resource/en/datasheet/stm32f051r8t6.pdf",
    "parts": {
      "symbol": "stm32f051r8t6.kicad_sym",
      "footprint": "stm32f051r8t6.kicad_mod",
      "model_3d": "stm32f051r8t6-etched.glb",
      "model_3d_plain": "stm32f051r8t6.glb",
      "model_3d_step": "stm32f051r8t6-etched.step",
      "model_3d_step_plain": "stm32f051r8t6.step",
      "lbr": "stm32f051r8t6.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply pin (1.65-3.6 V). Provides power to RTC and backup registers when VDD is off."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "General-purpose I/O (TC, standard 3.3 V). Additional functions: RTC_TAMP1, RTC_TS, RTC_OUT, WKUP2. Supplied via backup power switch (3 mA limit)."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "GPIO PC14 or 32.768 kHz LSE crystal oscillator input (OSC32_IN). Standard 3.3 V I/O with limited drive via backup switch."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "GPIO PC15 or 32.768 kHz LSE crystal oscillator output (OSC32_OUT). Standard 3.3 V I/O with limited drive via backup switch."
      },
      {
        "number": "5",
        "name": "PF0-OSC_IN",
        "type": "bidirectional",
        "description": "GPIO PF0 or HSE 4-32 MHz crystal oscillator input (OSC_IN). 5 V tolerant (FT)."
      },
      {
        "number": "6",
        "name": "PF1-OSC_OUT",
        "type": "bidirectional",
        "description": "GPIO PF1 or HSE crystal oscillator output (OSC_OUT). 5 V tolerant (FT)."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional device reset pin, active low. Embedded weak pull-up resistor."
      },
      {
        "number": "8",
        "name": "PC0",
        "type": "bidirectional",
        "description": "GPIO (TTa, 3.3 V, connected to ADC). Alt: EVENTOUT. Additional: ADC_IN10."
      },
      {
        "number": "9",
        "name": "PC1",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: EVENTOUT. Additional: ADC_IN11."
      },
      {
        "number": "10",
        "name": "PC2",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: EVENTOUT. Additional: ADC_IN12."
      },
      {
        "number": "11",
        "name": "PC3",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: EVENTOUT. Additional: ADC_IN13."
      },
      {
        "number": "12",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground reference for ADC/DAC/comparator subsystem."
      },
      {
        "number": "13",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply (2.4-3.6 V) for ADC/DAC/comparator subsystem."
      },
      {
        "number": "14",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: USART2_CTS, TIM2_CH1_ETR, COMP1_OUT, TSC_G1_IO1. Additional: ADC_IN0, COMP1_INM6, RTC_TAMP2, WKUP1."
      },
      {
        "number": "15",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: USART2_RTS, TIM2_CH2, TSC_G1_IO2, EVENTOUT. Additional: ADC_IN1, COMP1_INP."
      },
      {
        "number": "16",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: USART2_TX, TIM2_CH3, TIM15_CH1, COMP2_OUT, TSC_G1_IO3. Additional: ADC_IN2, COMP2_INM6."
      },
      {
        "number": "17",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: USART2_RX, TIM2_CH4, TIM15_CH2, TSC_G1_IO4. Additional: ADC_IN3, COMP2_INP."
      },
      {
        "number": "18",
        "name": "PF4",
        "type": "bidirectional",
        "description": "GPIO (FT, 5 V tolerant). Alt: EVENTOUT."
      },
      {
        "number": "19",
        "name": "PF5",
        "type": "bidirectional",
        "description": "GPIO (FT, 5 V tolerant). Alt: EVENTOUT."
      },
      {
        "number": "20",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: SPI1_NSS/I2S1_WS, USART2_CK, TIM14_CH1, TSC_G2_IO1. Additional: ADC_IN4, COMP1_INM4, COMP2_INM4, DAC1_OUT."
      },
      {
        "number": "21",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: SPI1_SCK/I2S1_CK, CEC, TIM2_CH1_ETR, TSC_G2_IO2. Additional: ADC_IN5, COMP1_INM5, COMP2_INM5."
      },
      {
        "number": "22",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: SPI1_MISO/I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1, COMP1_OUT, TSC_G2_IO3, EVENTOUT. Additional: ADC_IN6."
      },
      {
        "number": "23",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1, COMP2_OUT, TSC_G2_IO4, EVENTOUT. Additional: ADC_IN7."
      },
      {
        "number": "24",
        "name": "PC4",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: EVENTOUT. Additional: ADC_IN14."
      },
      {
        "number": "25",
        "name": "PC5",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: TSC_G3_IO1. Additional: ADC_IN15."
      },
      {
        "number": "26",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: TIM3_CH3, TIM1_CH2N, TSC_G3_IO2, EVENTOUT. Additional: ADC_IN8."
      },
      {
        "number": "27",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO (TTa). Alt: TIM3_CH4, TIM14_CH1, TIM1_CH3N, TSC_G3_IO3. Additional: ADC_IN9."
      },
      {
        "number": "28",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: TSC_G3_IO4."
      },
      {
        "number": "29",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: I2C2_SCL, CEC, TIM2_CH3, TSC_SYNC."
      },
      {
        "number": "30",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: I2C2_SDA, TIM2_CH4, TSC_G6_IO1, EVENTOUT."
      },
      {
        "number": "31",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply (2.0-3.6 V)."
      },
      {
        "number": "33",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI2_NSS, TIM1_BKIN, TSC_G6_IO2, EVENTOUT."
      },
      {
        "number": "34",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI2_SCK, TIM1_CH1N, TSC_G6_IO3."
      },
      {
        "number": "35",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI2_MISO, TIM1_CH2N, TIM15_CH1, TSC_G6_IO4."
      },
      {
        "number": "36",
        "name": "PB15",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI2_MOSI, TIM1_CH3N, TIM15_CH1N, TIM15_CH2. Additional: RTC_REFIN."
      },
      {
        "number": "37",
        "name": "PC6",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: TIM3_CH1."
      },
      {
        "number": "38",
        "name": "PC7",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: TIM3_CH2."
      },
      {
        "number": "39",
        "name": "PC8",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: TIM3_CH3."
      },
      {
        "number": "40",
        "name": "PC9",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: TIM3_CH4."
      },
      {
        "number": "41",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: USART1_CK, TIM1_CH1, EVENTOUT, MCO."
      },
      {
        "number": "42",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: USART1_TX, TIM1_CH2, TIM15_BKIN, TSC_G4_IO1."
      },
      {
        "number": "43",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: USART1_RX, TIM1_CH3, TIM17_BKIN, TSC_G4_IO2."
      },
      {
        "number": "44",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: USART1_CTS, TIM1_CH4, COMP1_OUT, TSC_G4_IO3, EVENTOUT."
      },
      {
        "number": "45",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: USART1_RTS, TIM1_ETR, COMP2_OUT, TSC_G4_IO4, EVENTOUT."
      },
      {
        "number": "46",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO / SWDAT after reset (FT). Alt: IR_OUT, SWDAT. Internal pull-up active on SWDAT after reset."
      },
      {
        "number": "47",
        "name": "PF6",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: I2C2_SCL."
      },
      {
        "number": "48",
        "name": "PF7",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: I2C2_SDA."
      },
      {
        "number": "49",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO / SWCLK after reset (FT). Alt: USART2_TX, SWCLK. Internal pull-down active on SWCLK after reset."
      },
      {
        "number": "50",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI1_NSS/I2S1_WS, USART2_RX, TIM2_CH1_ETR, EVENTOUT."
      },
      {
        "number": "51",
        "name": "PC10",
        "type": "bidirectional",
        "description": "GPIO (FT)."
      },
      {
        "number": "52",
        "name": "PC11",
        "type": "bidirectional",
        "description": "GPIO (FT)."
      },
      {
        "number": "53",
        "name": "PC12",
        "type": "bidirectional",
        "description": "GPIO (FT)."
      },
      {
        "number": "54",
        "name": "PD2",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: TIM3_ETR."
      },
      {
        "number": "55",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI1_SCK/I2S1_CK, TIM2_CH2, TSC_G5_IO1, EVENTOUT."
      },
      {
        "number": "56",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI1_MISO/I2S1_MCK, TIM3_CH1, TSC_G5_IO2, EVENTOUT."
      },
      {
        "number": "57",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO (FT). Alt: SPI1_MOSI/I2S1_SD, I2C1_SMBA, TIM16_BKIN, TIM3_CH2."
      },
      {
        "number": "58",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO (FTf, 5 V FM+ capable). Alt: I2C1_SCL, USART1_TX, TIM16_CH1N, TSC_G5_IO3."
      },
      {
        "number": "59",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO (FTf). Alt: I2C1_SDA, USART1_RX, TIM17_CH1N, TSC_G5_IO4."
      },
      {
        "number": "60",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot memory selection input. Sampled at reset to choose the boot source (Flash / System memory / SRAM)."
      },
      {
        "number": "61",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO (FTf). Alt: I2C1_SCL, CEC, TIM16_CH1, TSC_SYNC."
      },
      {
        "number": "62",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO (FTf). Alt: I2C1_SDA, IR_OUT, TIM17_CH1, EVENTOUT."
      },
      {
        "number": "63",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "64",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply (2.0-3.6 V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/stm32f051r8t6.pdf",
        "pages": 104,
        "sha256": "ef78e33984ec5885",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "mcu": {
      "part_number": "STM32F051R8T6",
      "series": "STM32F0",
      "subfamily": "STM32F051",
      "core": "Arm Cortex-M0",
      "frequency_mhz": 48,
      "flash_kb": 64,
      "ram_kb": 8,
      "io_count": 55,
      "package": "LQFP 64 10x10x1.4 mm",
      "marketing_status": "Active",
      "fpu": null,
      "supply_v_min": 2,
      "supply_v_max": 3.6,
      "temp_min_c": -40,
      "temp_max_c": 85,
      "adc_count": 1,
      "timers": 7,
      "in_distributor_stock": true,
      "product_folder": "/en/microcontrollers-microprocessors/stm32f051r8.html",
      "source": "st.com portfolio grid CL1734"
    },
    "models_3d": [
      {
        "file": "stm32f051r8t6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32f051r8t6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fd93470cb737daf4487058dd7878959efb1e33e8af4f8e5cb39701d40def2c9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Core": "Arm Cortex-M0",
      "Max clock": "48 MHz",
      "Flash": "64 kB",
      "RAM": "8 kB",
      "I/O pins": 55,
      "ADC units": 1,
      "ST status": "Active",
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-64(10x10)",
      "Category": "MCU",
      "Pins": "64"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32f051r8t6"
  ],
  "discovery_pitch": "STM32F051R8T6 (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32f051r8t6.kicad_sym",
    "stm32f051r8t6.kicad_mod",
    "stm32f051r8t6.glb",
    "stm32f051r8t6.step",
    "stm32f051r8t6-etched.step",
    "stm32f051r8t6.lbr",
    "docs/hero.png",
    "docs/stm32f051r8t6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "STM32F051R8T6",
      "kind": "packaging"
    },
    {
      "mpn": "STM32F051R6T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051R4T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051C8T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051C6T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051C4T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051K8T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051K6T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051K4T6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051K8U6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051K6U6",
      "kind": "unknown"
    },
    {
      "mpn": "STM32F051K4U6",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T08:40:47.454Z"
}