STM8L101F3U6TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm8l101f3u6tr",
  "title": "STM8L101F3U6TR",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-20(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm8l101f3u6tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM8L101F3U6TR",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-20(3x3)",
    "pin_count": 20,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586181949774319616",
    "parts": {
      "symbol": "stm8l101f3u6tr.kicad_sym",
      "footprint": "stm8l101f3u6tr.kicad_mod",
      "model_3d": "stm8l101f3u6tr-etched.glb",
      "model_3d_plain": "stm8l101f3u6tr.glb",
      "model_3d_step": "stm8l101f3u6tr-etched.step",
      "model_3d_step_plain": "stm8l101f3u6tr.step",
      "lbr": "stm8l101f3u6tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C111168",
      "digikey": "497-18840-2-ND",
      "mouser": "511-STM8L101F3U6TR"
    },
    "distributor_check": {
      "checked_at": "2026-09-26T20:23:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18840-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM8L101F3U6TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NRST/PA1",
        "type": "bidirectional",
        "description": "Reset input with internal pull-up (30-60 kΩ); pulses ≤50 ns filtered; after reset release can be reconfigured as PA1 push-pull output only (open-drain and input modes are not available per RM0013)."
      },
      {
        "number": "2",
        "name": "PA2",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port A2 with programmable weak pull-up (30-60 kΩ), 20 mA high sink/source capability, and external-interrupt capability."
      },
      {
        "number": "3",
        "name": "PA3",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port A3 with programmable weak pull-up (30-60 kΩ), 20 mA high sink/source capability, and external-interrupt capability."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for all internal and I/O circuitry; maximum total sink current 80 mA."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply, 1.65 V to 3.6 V operating range; maximum total source current 80 mA."
      },
      {
        "number": "6",
        "name": "PD0/TIM3_CH2/COMP1_CH3",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port D0 with 20 mA high sink/source capability; alternate functions: Timer 3 channel 2 (output compare/PWM) and Comparator 1 analog input channel 3."
      },
      {
        "number": "7",
        "name": "PB0/TIM2_CH1/COMP1_CH1",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B0 (pull-up active during reset phase, input floating after reset release) with 20 mA high sink/source; alternate functions: Timer 2 channel 1 and Comparator 1 analog input channel 1."
      },
      {
        "number": "8",
        "name": "PB1/TIM3_CH1/COMP1_CH2",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B1 with 20 mA high sink/source capability; alternate functions: Timer 3 channel 1 and Comparator 1 analog input channel 2."
      },
      {
        "number": "9",
        "name": "PB2/TIM2_CH2/COMP2_CH1",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B2 with 20 mA high sink/source capability; alternate functions: Timer 2 channel 2 and Comparator 2 analog input channel 1."
      },
      {
        "number": "10",
        "name": "PB3/TIM2_ETR/COMP2_CH2",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B3 with 20 mA high sink/source capability; alternate functions: Timer 2 external trigger input and Comparator 2 analog input channel 2."
      },
      {
        "number": "11",
        "name": "PB4/SPI_NSS",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B4 (pull-up active during reset phase, input floating after reset release) with 20 mA high sink/source; alternate function: SPI master/slave select."
      },
      {
        "number": "12",
        "name": "PB5/SPI_SCK",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B5 with 20 mA high sink/source; alternate function: SPI clock up to 8 MHz in master or slave mode."
      },
      {
        "number": "13",
        "name": "PB6/SPI_MOSI",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B6 with 20 mA high sink/source; alternate function: SPI master-out/slave-in data line."
      },
      {
        "number": "14",
        "name": "PB7/SPI_MISO",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port B7 with 20 mA high sink/source; alternate function: SPI master-in/slave-out data line."
      },
      {
        "number": "15",
        "name": "PC0/I2C_SDA",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port C0 with true open-drain output only (no P-buffer, no weak pull-up, no protection diode to VDD); alternate function: I2C SDA supporting standard (100 kHz) and fast (400 kHz) modes."
      },
      {
        "number": "16",
        "name": "PC1/I2C_SCL",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port C1 with true open-drain output only (no P-buffer, no weak pull-up, no protection diode to VDD); alternate function: I2C SCL supporting standard (100 kHz) and fast (400 kHz) modes."
      },
      {
        "number": "17",
        "name": "PC2/USART_RX",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port C2 with 20 mA high sink/source; alternate function: USART receive with fractional baud rate generator."
      },
      {
        "number": "18",
        "name": "PC3/USART_TX",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port C3 with 20 mA high sink/source; alternate function: USART transmit with fractional baud rate generator."
      },
      {
        "number": "19",
        "name": "PC4/USART_CK/CCO",
        "type": "bidirectional",
        "description": "General-purpose bidirectional I/O on Port C4 with 20 mA high sink/source; alternate functions: USART synchronous clock output and configurable clock output (CCO)."
      },
      {
        "number": "20",
        "name": "PA0/SWIM/BEEP/IR_TIM",
        "type": "bidirectional",
        "description": "Port A0 held in input pull-up during reset and after reset release; provides SWIM single-wire debug interface, beeper output (1/2/4 kHz), and infrared timer output with high-sink LED driver capability (VOL ≤ 0.9 V at IIO = 20 mA, VDD = 2.0 V)."
      }
    ],
    "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-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: UFQFPN20(3x3) package with COMP_REF is specific to STM8L101F3U6TR/F2U6TR/F1U6ATR variants; other var"
        ],
        "pages_sent": 88,
        "cost_usd": 0.7235,
        "at": "2026-09-26T20:23:25"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586181949774319616",
        "pages": 88,
        "sha256": "c8e0b0d1f3c75a46",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "UFQFPN-20(3x3)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "20"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "stm8l101f3u6tr"
  ],
  "discovery_pitch": "STM8L101F3U6TR (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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    "stm8l101f3u6tr.lbr",
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  "visibility": {
    "public": true
  }
}