STM8S903F3P6

{
  "slug": "stm8s903f3p6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm8s903f3p6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm8s903f3p6.kicad_sym",
    "stm8s903f3p6.kicad_mod",
    "stm8s903f3p6.glb",
    "stm8s903f3p6.step",
    "stm8s903f3p6.lbr",
    "docs/hero.png",
    "docs/stm8s903f3p6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm8s903f3p6-hero.glb",
    "stm8s903f3p6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM8S903F3P6",
    "manufacturer": "STMicroelectronics",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922932042584064",
    "parts": {
      "symbol": "stm8s903f3p6.kicad_sym",
      "footprint": "stm8s903f3p6.kicad_mod",
      "model_3d": "stm8s903f3p6-hero.glb",
      "model_3d_plain": "stm8s903f3p6.glb",
      "model_3d_step": "stm8s903f3p6-etched.step",
      "model_3d_step_plain": "stm8s903f3p6.step",
      "lbr": "stm8s903f3p6.lbr"
    },
    "distributor_links": {
      "lcsc": "C1340185",
      "digikey": "497-11596-ND",
      "mouser": "511-STM8S903F3P6"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T02:56:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-11596-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-STM8S903F3P6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D4 is a high-sink-capable I/O (O3 speed) whose default function is Timer 5 channel 1 or the BEEP output, with UART1 clock (UART1_CK) available through the AFR2 remap option."
      },
      {
        "number": "2",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D5 is a high-sink-capable I/O (O3 speed) whose default functions are analog input 5 (AIN5) and UART1 data transmit (UART1_TX)."
      },
      {
        "number": "3",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D6 is a high-sink-capable I/O (O3 speed) whose default functions are analog input 6 (AIN6) and UART1 data receive (UART1_RX)."
      },
      {
        "number": "4",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset pin whose main function is Reset, listed as I/O in the pin table; its electrical limits are given in Table 44 (NRST pin characteristics), which is not in the extracted text."
      },
      {
        "number": "5",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A1 is an I/O whose default function is the resonator/crystal input OSCIN, and in Halt/Active-halt mode it is automatically set to input weak pull-up, cannot wake the device, and should be used only as an input if Halt/Active-halt is used."
      },
      {
        "number": "6",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A2 is an I/O whose default function is the resonator/crystal output OSCOUT, with slow output speed (O1, up to 2 MHz)."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "8",
        "name": "VCAP",
        "type": "power_out",
        "description": "1.8 V regulator capacitor pin that connects to the external VCAP capacitor described in section 10.3.1."
      },
      {
        "number": "9",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, specified for a 2.95 to 5.5 V operating voltage in the features list."
      },
      {
        "number": "10",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A3 is a high-sink-capable I/O whose default function is Timer 5 channel 3, with SPI master/slave select (AFR1) or UART1 data transmit (AFR1:0) available through remap options."
      },
      {
        "number": "11",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B5 is a true open-drain I/O (no P-buffer, weak pull-up or protection diode to VDD) carrying I2C data, with Timer 1 break input (TIM1_BKIN) available through the AFR4 remap."
      },
      {
        "number": "12",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B4 is a true open-drain I/O (no P-buffer, weak pull-up or protection diode to VDD) carrying I2C clock, with ADC external trigger (ADC_ETR) available through the AFR4 remap."
      },
      {
        "number": "13",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C3 is a high-sink-capable I/O whose default function is Timer 1 channel 3, with top level interrupt (TLI, AFR3) and Timer 1 inverted channel 1 (AFR7) available through remap options."
      },
      {
        "number": "14",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C4 is a high-sink-capable I/O whose default function is Timer 1 channel 4 or configurable clock output (CLK_CCO), with analog input 2 (AIN2, AFR2) and Timer 1 inverted channel 2 (AFR7) available through remap options."
      },
      {
        "number": "15",
        "name": "PC5/SPI_SCK",
        "type": "bidirectional",
        "description": "Port C5 is a high-sink-capable I/O whose default function is SPI clock, with Timer 5 channel 1 available through the AFR0 remap."
      },
      {
        "number": "16",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C6 is a high-sink-capable I/O whose default function is SPI master out/slave in, with Timer 1 channel 1 available through the AFR0 remap."
      },
      {
        "number": "17",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C7 is a high-sink-capable I/O whose default function is SPI master in/slave out, with Timer 1 channel 2 available through the AFR0 remap."
      },
      {
        "number": "18",
        "name": "PD1/SWIM",
        "type": "bidirectional",
        "description": "Port D1 is a high-sink-capable I/O (O4 speed) carrying the SWIM data interface; it is in input pull-up during reset and after internal reset release."
      },
      {
        "number": "19",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D2 is a high-sink-capable I/O whose default function is analog input 3 (AIN3), with Timer 5 channel 3 available through the AFR1 remap."
      },
      {
        "number": "20",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D3 is a high-sink-capable I/O whose default function is analog input 4 (AIN4), with Timer 5 channel 2 and ADC external trigger (ADC_ETR) listed as its other function."
      }
    ],
    "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: VCAP type set to power_out (1.8 V regulator output needing an external capacitor); the datasheet onl; NRST is listed as type I/O in the pin table and mapped to bidirectional; its electrical limits (Tabl; Pin rows for these pins are on the page 24 continuation of Table 5; source_page set to 24 accordingl"
        ],
        "pages_sent": 59,
        "cost_usd": 0.2246,
        "at": "2026-10-08T02:56:18"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922932042584064",
        "pages": 124,
        "sha256": "76ef2064c8429253",
        "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"
    },
    "models_3d": [
      {
        "file": "stm8s903f3p6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm8s903f3p6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0b077fb6bee80cd1c426d4e2ad0f9f120b003fe2f28d4cd53c56636a6c9b96b8",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}