25LC640A-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "25lc640a-i",
  "title": "25LC640A-I",
  "brief": "Microchip Tech EEPROM, SOIC-8. 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",
    "memory",
    "25lc640a-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "25LC640A-I",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fd6e3abeb6444913aa22780f050290c0.pdf",
    "parts": {
      "symbol": "25lc640a-i.kicad_sym",
      "footprint": "25lc640a-i.kicad_mod",
      "model_3d": "25lc640a-i-hero.glb",
      "model_3d_plain": "25lc640a-i-etched.glb",
      "model_3d_step": "25lc640a-i-etched.step",
      "model_3d_step_plain": "25lc640a-i.step",
      "lbr": "25lc640a-i.lbr"
    },
    "distributor_links": {
      "lcsc": "C71171"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:50:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CS",
        "type": "input",
        "description": "Chip Select input; a low level selects the device and a high level deselects it and forces Standby mode."
      },
      {
        "number": "2",
        "name": "SO",
        "type": "output",
        "description": "Serial Data Output; data is shifted out after the falling edge of SCK during a read and SO goes to high impedance when the device is deselected."
      },
      {
        "number": "3",
        "name": "WP",
        "type": "input",
        "description": "Write-Protect input; when WP is low and WPEN is high, writing to the nonvolatile bits of the STATUS register is disabled."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SI",
        "type": "input",
        "description": "Serial Data Input; instructions, addresses and data are latched on the rising edge of SCK."
      },
      {
        "number": "6",
        "name": "SCK",
        "type": "input",
        "description": "Serial Clock input; SI is latched on the rising edge of SCK and SO is updated after the falling edge."
      },
      {
        "number": "7",
        "name": "HOLD",
        "type": "input",
        "description": "Hold input; pulling it low while SCK is low pauses serial communication without resetting the sequence, and it must be held high when not used."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; the 25LC640A VCC range is 2.5-5.5V."
      }
    ],
    "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: Package variant for 25LC640A-I is SN (plastic SOIC, 3.90 mm body, 8-lead). Pinout taken from the sta"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0125,
        "at": "2026-10-27T01:50:35"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/fd6e3abeb6444913aa22780f050290c0.pdf",
        "pages": 36,
        "sha256": "3e90f4c647903210",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "25lc640a-i.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "25lc640a-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2f9546d9a134f7d5921a70fb0e5bed1650a55f69343cc7e3fee06a5b6a6d2d46",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Memory",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "TDFN (2x3), 8-lead Note 1: “Y” indicates a Nickel Palladium Gold (NiPdAu) finish.",
        "page": 33,
        "doc": "ds.pdf",
        "plating": "gold"
      },
      "version": 1,
      "datasheet_sha256": "3e90f4c647903210c67db3492c5d0c67e723f024f31fb976286b07b28c243058"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "25lc640a-i"
  ],
  "discovery_pitch": "25LC640A-I (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "25lc640a-i.kicad_sym",
    "25lc640a-i.kicad_mod",
    "25lc640a-i.glb",
    "25lc640a-i.step",
    "25lc640a-i.lbr",
    "docs/hero.png",
    "docs/25lc640a-i-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "25lc640a-i-hero.glb",
    "25lc640a-i-hero.overlay.json",
    "25lc640a-i-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}