ATTINY1634-SU

{
  "slug": "attiny1634-su",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "attiny1634-su",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "attiny1634-su.kicad_sym",
    "attiny1634-su.kicad_mod",
    "attiny1634-su.glb",
    "attiny1634-su.step",
    "attiny1634-su.lbr",
    "docs/hero.png",
    "docs/attiny1634-su-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "attiny1634-su-hero.glb",
    "attiny1634-su-hero.overlay.json",
    "attiny1634-su-etched.glb"
  ],
  "component": {
    "mpn": "ATTINY1634-SU",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/adfad32847abf774d6e0e69f5410b4d5.pdf",
    "parts": {
      "symbol": "attiny1634-su.kicad_sym",
      "footprint": "attiny1634-su.kicad_mod",
      "model_3d": "attiny1634-su-hero.glb",
      "model_3d_plain": "attiny1634-su-etched.glb",
      "model_3d_step": "attiny1634-su-etched.step",
      "model_3d_step_plain": "attiny1634-su.step",
      "lbr": "attiny1634-su.lbr"
    },
    "distributor_links": {
      "lcsc": "C220787",
      "digikey": "ATTINY1634-SU-ND",
      "mouser": "556-ATTINY1634-SU"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:59:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATTINY1634-SU-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATTINY1634-SU",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT8, TXD0, ADC5."
      },
      {
        "number": "2",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Port A bit 7, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT7, RXD0, ADC4."
      },
      {
        "number": "3",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A bit 6, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions PCINT6, OC1B, ADC3."
      },
      {
        "number": "4",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A bit 5, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions PCINT5, OC0B, ADC2."
      },
      {
        "number": "5",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A bit 4, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT4, T0, ADC1."
      },
      {
        "number": "6",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT3, T1, SNS, ADC0."
      },
      {
        "number": "7",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT2, AIN1."
      },
      {
        "number": "8",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT1, AIN0."
      },
      {
        "number": "9",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT0, AREF."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage."
      },
      {
        "number": "12",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions XTAL1 (input to the inverting oscillator amplifier and internal clock circuit), CLKI, PCINT17."
      },
      {
        "number": "13",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions XTAL2 (output from the inverting oscillator amplifier), PCINT16."
      },
      {
        "number": "14",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 / RESET: a low level longer than the minimum pulse length generates a reset even if the clock is not running, and the pin can also be used as a weak I/O pin; also dW, PCINT15."
      },
      {
        "number": "15",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC11, CLKO, INT0, PCINT14."
      },
      {
        "number": "16",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC10, ICP1, SCL, USCK, XCK1, PCINT13."
      },
      {
        "number": "17",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions ADC9, OC0A, XCK0, PCINT12."
      },
      {
        "number": "18",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions ADC8, OC1A, PCINT11."
      },
      {
        "number": "19",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC7, DO, TXD1, PCINT10."
      },
      {
        "number": "20",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC6, DI, SDA, RXD1, PCINT9."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The SOIC figure on page 2 prints left-side numbers 1-10 and right-side numbers 20-11 separately from; PC3/RESET is typed bidirectional because the datasheet says it can also be used as a weak I/O pin. I"
        ],
        "pages_sent": 44,
        "cost_usd": 0.3526,
        "at": "2026-10-27T00:58:47"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/adfad32847abf774d6e0e69f5410b4d5.pdf",
        "pages": 292,
        "sha256": "db64d0a5aab1ec89",
        "source_tier": "mfr"
      },
      "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": "attiny1634-su.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "attiny1634-su-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8d7aa97068f8589551a9701190791ae3536214a62fde07cc9cc8bf7901ffbff5",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}