STM8S105S4T6C

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm8s105s4t6c",
  "title": "STM8S105S4T6C",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-44(10x10). 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",
    "stm8s105s4t6c",
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  "component": {
    "mpn": "STM8S105S4T6C",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-44(10x10)",
    "pin_count": 44,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586177621910556672",
    "parts": {
      "symbol": "stm8s105s4t6c.kicad_sym",
      "footprint": "stm8s105s4t6c.kicad_mod",
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      "model_3d_plain": "stm8s105s4t6c.glb",
      "model_3d_step": "stm8s105s4t6c-etched.step",
      "model_3d_step_plain": "stm8s105s4t6c.step",
      "lbr": "stm8s105s4t6c.lbr"
    },
    "distributor_links": {
      "lcsc": "C59102",
      "digikey": "497-STM8S105S4T6C-ND",
      "mouser": "511-STM8S105S4T6C"
    },
    "distributor_check": {
      "checked_at": "2026-09-26T11:59:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM8S105S4T6C-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM8S105S4T6C",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Device reset input, open-drain capable, active low"
      },
      {
        "number": "2",
        "name": "PA1/OSC_IN",
        "type": "bidirectional",
        "description": "Port A pin 1, oscillator or external clock input"
      },
      {
        "number": "3",
        "name": "PA2/OSC_OUT",
        "type": "bidirectional",
        "description": "Port A pin 2, oscillator output or general I/O"
      },
      {
        "number": "4",
        "name": "VSSIO_1",
        "type": "power_in",
        "description": "I/O ground power supply"
      },
      {
        "number": "5",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground power supply"
      },
      {
        "number": "6",
        "name": "VCAP",
        "type": "passive",
        "description": "1.8 V internal regulator capacitor pin, requires 470 nF to 3.3 µF external capacitor"
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, operating range 2.95 to 5.5 V"
      },
      {
        "number": "8",
        "name": "VDDIO_1",
        "type": "power_in",
        "description": "I/O power supply pin"
      },
      {
        "number": "9",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A pin 4, general purpose I/O with high sink output"
      },
      {
        "number": "10",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A pin 5, general purpose I/O with high sink output"
      },
      {
        "number": "11",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A pin 6, general purpose I/O with high sink output"
      },
      {
        "number": "12",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply for ADC"
      },
      {
        "number": "13",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground power supply"
      },
      {
        "number": "14",
        "name": "PB7/AIN7",
        "type": "bidirectional",
        "description": "Port B pin 7, analog input 7 or general I/O"
      },
      {
        "number": "15",
        "name": "PB6/AIN6",
        "type": "bidirectional",
        "description": "Port B pin 6, analog input 6 or general I/O"
      },
      {
        "number": "16",
        "name": "PB5/AIN5",
        "type": "bidirectional",
        "description": "Port B pin 5, analog input 5 or I2C data line (SDA) with remap option"
      },
      {
        "number": "17",
        "name": "PB4/AIN4",
        "type": "bidirectional",
        "description": "Port B pin 4, analog input 4 or I2C clock line (SCL) with remap option"
      },
      {
        "number": "18",
        "name": "PB3/AIN3",
        "type": "bidirectional",
        "description": "Port B pin 3, analog input 3 or Timer 1 external trigger input with remap option"
      },
      {
        "number": "19",
        "name": "PB2/AIN2",
        "type": "bidirectional",
        "description": "Port B pin 2, analog input 2 or Timer 1 complementary channel 3 output with remap option"
      },
      {
        "number": "20",
        "name": "PB1/AIN1",
        "type": "bidirectional",
        "description": "Port B pin 1, analog input 1 or Timer 1 complementary channel 2 output with remap option"
      },
      {
        "number": "21",
        "name": "PB0/AIN0",
        "type": "bidirectional",
        "description": "Port B pin 0, analog input 0 or Timer 1 complementary channel 1 output with remap option"
      },
      {
        "number": "22",
        "name": "PE6/AIN9",
        "type": "bidirectional",
        "description": "Port E pin 6, analog input 9 or general I/O"
      },
      {
        "number": "23",
        "name": "PE5/SPI_NSS",
        "type": "bidirectional",
        "description": "Port E pin 5, SPI slave select (NSS) input or general I/O"
      },
      {
        "number": "24",
        "name": "PC1/TIM1_CH1/UART2_CK",
        "type": "bidirectional",
        "description": "Port C pin 1, Timer 1 channel 1 capture/compare, or UART2 synchronous clock"
      },
      {
        "number": "25",
        "name": "PC2/TIM1_CH2",
        "type": "bidirectional",
        "description": "Port C pin 2, Timer 1 channel 2 capture/compare output"
      },
      {
        "number": "26",
        "name": "PC3/TIM1_CH3",
        "type": "bidirectional",
        "description": "Port C pin 3, Timer 1 channel 3 capture/compare output"
      },
      {
        "number": "27",
        "name": "PC5/SPI_SCK",
        "type": "bidirectional",
        "description": "Port C pin 5, SPI clock line for master or slave mode"
      },
      {
        "number": "28",
        "name": "VSSIO_2",
        "type": "power_in",
        "description": "I/O ground power supply"
      },
      {
        "number": "29",
        "name": "VDDIO_2",
        "type": "power_in",
        "description": "I/O power supply pin"
      },
      {
        "number": "30",
        "name": "PC6/SPI_MOSI",
        "type": "bidirectional",
        "description": "Port C pin 6, SPI Master Out/Slave In (MOSI) data line"
      },
      {
        "number": "31",
        "name": "PC7/SPI_MISO",
        "type": "bidirectional",
        "description": "Port C pin 7, SPI Master In/Slave Out (MISO) data line"
      },
      {
        "number": "32",
        "name": "PG0",
        "type": "bidirectional",
        "description": "Port G pin 0, general purpose I/O"
      },
      {
        "number": "33",
        "name": "PG1",
        "type": "bidirectional",
        "description": "Port G pin 1, general purpose I/O"
      },
      {
        "number": "34",
        "name": "PE2/I2C_SDA",
        "type": "bidirectional",
        "description": "Port E pin 2, I2C serial data (SDA) line, true open-drain output"
      },
      {
        "number": "35",
        "name": "PE1/I2C_SCL",
        "type": "bidirectional",
        "description": "Port E pin 1, I2C serial clock (SCL) line, true open-drain output"
      },
      {
        "number": "36",
        "name": "PE0/CLK_CCO",
        "type": "bidirectional",
        "description": "Port E pin 0, configurable clock output for external clock distribution"
      },
      {
        "number": "37",
        "name": "PD0/TIM3_CH2",
        "type": "bidirectional",
        "description": "Port D pin 0, Timer 3 channel 2 capture/compare, or Timer 1 break input/clock output with remap"
      },
      {
        "number": "38",
        "name": "PD1/SWIM",
        "type": "bidirectional",
        "description": "Port D pin 1, Single Wire Interface Module (SWIM) data line for programming and debugging"
      },
      {
        "number": "39",
        "name": "PD2/TIM3_CH1",
        "type": "bidirectional",
        "description": "Port D pin 2, Timer 3 channel 1 or Timer 2 channel 3 capture/compare with remap option"
      },
      {
        "number": "40",
        "name": "PD3/TIM2_CH2",
        "type": "bidirectional",
        "description": "Port D pin 3, Timer 2 channel 2 capture/compare or ADC external trigger input with remap"
      },
      {
        "number": "41",
        "name": "PD4/TIM2_CH1",
        "type": "bidirectional",
        "description": "Port D pin 4, Timer 2 channel 1 capture/compare or beeper output with remap option"
      },
      {
        "number": "42",
        "name": "PD5/UART2_TX",
        "type": "output",
        "description": "Port D pin 5, UART2 transmit data output line"
      },
      {
        "number": "43",
        "name": "PD6/UART2_RX",
        "type": "input",
        "description": "Port D pin 6, UART2 receive data input line"
      },
      {
        "number": "44",
        "name": "PD7/TLI",
        "type": "input",
        "description": "Port D pin 7, top level interrupt input or Timer 1 channel 4 output with remap option"
      }
    ],
    "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": [],
        "pages_sent": 121,
        "cost_usd": 1.0504,
        "at": "2026-09-26T11:58:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586177621910556672",
        "pages": 121,
        "sha256": "b1007bc27bb78327",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 44,
        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "sha256": "81aae6270b5c742bed79a8a35e9adf7fbed97c42e341e6b25ab20c1783b93b5d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm8s105s4t6c-etched.step",
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        "sha256": "7a45ffb0ada70fd6b8d57c4784b4f4df2ffceca2d0a0756017a8fcc4144caff6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-44(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "44"
    }
  },
  "variants": [],
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  "discovery_pitch": "STM8S105S4T6C (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
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