STM8S105K4T3C

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm8s105k4t3c",
  "title": "STM8S105K4T3C",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "embedded processors & controllers",
    "stm8s105k4t3c",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM8S105K4T3C",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-32(7x7)",
    "pin_count": 32,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924061560397824",
    "parts": {
      "symbol": "stm8s105k4t3c.kicad_sym",
      "footprint": "stm8s105k4t3c.kicad_mod",
      "model_3d": "stm8s105k4t3c-hero.glb",
      "model_3d_plain": "stm8s105k4t3c.glb",
      "model_3d_step": "stm8s105k4t3c-etched.step",
      "model_3d_step_plain": "stm8s105k4t3c.step",
      "lbr": "stm8s105k4t3c.lbr"
    },
    "distributor_links": {
      "lcsc": "C1340521",
      "digikey": "497-11583-ND",
      "mouser": "511-STM8S105K4T3C"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T04:50:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-11583-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM8S105K4T3C",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Device reset pin (listed as I/O in the pin table), with its characteristics given in the NRST pin characteristics section."
      },
      {
        "number": "2",
        "name": "PA1/OSCIN",
        "type": "bidirectional",
        "description": "Port A1 I/O that also serves as the resonator/crystal input OSCIN, or the external clock signal input when option bit EXTCLK is set to 1."
      },
      {
        "number": "3",
        "name": "PA2/OSCOUT",
        "type": "bidirectional",
        "description": "Port A2 I/O that also serves as the resonator/crystal output OSCOUT for the external crystal connected to OSCIN/OSCOUT."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "5",
        "name": "VCAP",
        "type": "passive",
        "description": "Connection for the 1.8 V internal regulator capacitor."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply; the device operates from 2.95 V to 5.5 V."
      },
      {
        "number": "7",
        "name": "VDDIO_1",
        "type": "power_in",
        "description": "I/O power supply."
      },
      {
        "number": "8",
        "name": "PF4/AIN12",
        "type": "bidirectional",
        "description": "Port F4 I/O with analog input AIN12, which is not selectable in ADC scan mode or with the analog watchdog; a pull-up is applied during reset and the pin is input floating after reset release."
      },
      {
        "number": "9",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply."
      },
      {
        "number": "10",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "11",
        "name": "PB5/AIN5",
        "type": "bidirectional",
        "description": "Port B5 I/O with analog input AIN5; when option AFR6 is set, this pin becomes the I2C_SDA alternate function."
      },
      {
        "number": "12",
        "name": "PB4/AIN4",
        "type": "bidirectional",
        "description": "Port B4 I/O with analog input AIN4; when option AFR6 is set, this pin becomes the I2C_SCL alternate function."
      },
      {
        "number": "13",
        "name": "PB3/AIN3",
        "type": "bidirectional",
        "description": "Port B3 I/O with analog input AIN3; when option AFR5 is set, this pin becomes the TIM1_ETR alternate function."
      },
      {
        "number": "14",
        "name": "PB2/AIN2",
        "type": "bidirectional",
        "description": "Port B2 I/O with analog input AIN2; when option AFR5 is set, this pin becomes the TIM1_CH3N alternate function."
      },
      {
        "number": "15",
        "name": "PB1/AIN1",
        "type": "bidirectional",
        "description": "Port B1 I/O with analog input AIN1; when option AFR5 is set, this pin becomes the TIM1_CH2N alternate function."
      },
      {
        "number": "16",
        "name": "PB0/AIN0",
        "type": "bidirectional",
        "description": "Port B0 I/O with analog input AIN0; when option AFR5 is set, this pin becomes the TIM1_CH1N alternate function."
      },
      {
        "number": "17",
        "name": "PE5/SPI_NSS",
        "type": "bidirectional",
        "description": "Port E5 I/O that serves as the SPI master/slave select input SPI_NSS."
      },
      {
        "number": "18",
        "name": "PC1/TIM1_CH1/UART2_CK",
        "type": "bidirectional",
        "description": "Port C1 high sink I/O that serves as TIM1 channel 1 or the UART2 synchronous clock output UART2_CK."
      },
      {
        "number": "19",
        "name": "PC2/TIM1_CH2",
        "type": "bidirectional",
        "description": "Port C2 high sink I/O that serves as TIM1 channel 2."
      },
      {
        "number": "20",
        "name": "PC3/TIM1_CH3",
        "type": "bidirectional",
        "description": "Port C3 high sink I/O that serves as TIM1 channel 3."
      },
      {
        "number": "21",
        "name": "PC4/TIM1_CH4",
        "type": "bidirectional",
        "description": "Port C4 high sink I/O that serves as TIM1 channel 4."
      },
      {
        "number": "22",
        "name": "PC5/SPI_SCK",
        "type": "bidirectional",
        "description": "Port C5 high sink I/O that serves as the SPI clock SPI_SCK."
      },
      {
        "number": "23",
        "name": "PC6/SPI_MOSI",
        "type": "bidirectional",
        "description": "Port C6 high sink I/O that serves as the SPI master out / slave in line SPI_MOSI."
      },
      {
        "number": "24",
        "name": "PC7/SPI_MISO",
        "type": "bidirectional",
        "description": "Port C7 high sink I/O that serves as the SPI master in / slave out line SPI_MISO."
      },
      {
        "number": "25",
        "name": "PD0/TIM3_CH2",
        "type": "bidirectional",
        "description": "Port D0 high sink I/O that serves as TIM3 channel 2; option AFR3 remaps it to TIM1_BKIN and option AFR2 remaps it to CLK_CCO (AFR2 has priority)."
      },
      {
        "number": "26",
        "name": "PD1/SWIM",
        "type": "bidirectional",
        "description": "Port D1 high sink I/O that serves as the SWIM single-wire data interface; the pin is in input pull-up during reset and after internal reset release."
      },
      {
        "number": "27",
        "name": "PD2/TIM3_CH1",
        "type": "bidirectional",
        "description": "Port D2 high sink I/O that serves as TIM3 channel 1; option AFR1 remaps it to TIM2_CH3."
      },
      {
        "number": "28",
        "name": "PD3/TIM2_CH2",
        "type": "bidirectional",
        "description": "Port D3 high sink I/O that serves as TIM2 channel 2; option AFR0 remaps it to the ADC_ETR input."
      },
      {
        "number": "29",
        "name": "PD4/TIM2_CH1",
        "type": "bidirectional",
        "description": "Port D4 high sink I/O that serves as TIM2 channel 1; option AFR7 makes it the BEEP output."
      },
      {
        "number": "30",
        "name": "PD5/UART2_TX",
        "type": "bidirectional",
        "description": "Port D5 I/O that serves as the UART2 data transmit output UART2_TX."
      },
      {
        "number": "31",
        "name": "PD6/UART2_RX",
        "type": "bidirectional",
        "description": "Port D6 I/O that serves as the UART2 data receive input UART2_RX."
      },
      {
        "number": "32",
        "name": "PD7/TLI",
        "type": "bidirectional",
        "description": "Port D7 I/O that serves as the top level interrupt input TLI; option AFR4 remaps it to TIM1_CH4."
      }
    ],
    "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 LQFP32 pin numbers were taken from the LQFP32/UFQFPN32 column of Table 5 (pages 26-29), which is; Pin 5 VCAP is listed as type S (power supply) in the datasheet. It is typed here as passive because ; NRST (pin 1) is listed as I/O in the datasheet pin table, so it is typed bidirectional. Many KiCad s"
        ],
        "pages_sent": 55,
        "cost_usd": 0.2159,
        "at": "2026-10-08T04:50:19"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924061560397824",
        "pages": 121,
        "sha256": "b1007bc27bb78327",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "be0e412f1c66fee70039b0e109e0cc7c823161dda97593718afa97569bc61ce3",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm8s105k4t3c-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
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        "footprint_binding": "identity",
        "sha256": "4221dd9a98dc4b22ae0ac195551914ce7de425142c100d81777c84418cdcae86",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-32(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "32"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "stm8s105k4t3c"
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  "discovery_pitch": "STM8S105K4T3C (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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