25LC040T-I

{
  "slug": "25lc040t-i",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech EEPROM, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "memory",
    "25lc040t-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "25lc040t-i.kicad_sym",
    "25lc040t-i.kicad_mod",
    "25lc040t-i.glb",
    "25lc040t-i.step",
    "25lc040t-i.lbr",
    "docs/hero.png",
    "docs/25lc040t-i-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "25lc040t-i-hero.glb",
    "25lc040t-i-hero.overlay.json",
    "25lc040t-i-etched.glb"
  ],
  "component": {
    "mpn": "25LC040T-I",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e2a883d52085bec0d05a04e0a61bc34f.pdf",
    "parts": {
      "symbol": "25lc040t-i.kicad_sym",
      "footprint": "25lc040t-i.kicad_mod",
      "model_3d": "25lc040t-i-hero.glb",
      "model_3d_plain": "25lc040t-i-etched.glb",
      "model_3d_step": "25lc040t-i-etched.step",
      "model_3d_step_plain": "25lc040t-i.step",
      "lbr": "25lc040t-i.lbr"
    },
    "distributor_links": {
      "lcsc": "C2061461"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T20:20:18Z",
      "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: a low level selects the device and a high level deselects it and forces it into Standby mode, and CS must be low after power-up before any sequence is initiated."
      },
      {
        "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 or HOLD is lowered."
      },
      {
        "number": "3",
        "name": "WP",
        "type": "input",
        "description": "Write-Protect: when low, all writes to the array and STATUS register are disabled and the write enable latch is reset, while when high all functions including nonvolatile writes operate normally."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SI",
        "type": "input",
        "description": "Serial Data Input: receives instructions, addresses and data, latched on the rising edge of SCK."
      },
      {
        "number": "6",
        "name": "SCK",
        "type": "input",
        "description": "Serial Clock Input: SI is latched on its rising edge and SO is updated after its falling edge to synchronize communication with the master."
      },
      {
        "number": "7",
        "name": "HOLD",
        "type": "input",
        "description": "Hold Input: when pulled low while SCK is low it suspends serial communication without resetting the sequence, and it must be held high when the function is not used."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply Voltage: the 25LC040 operates from 2.5V to 5.5V per the Device Selection Table."
      }
    ],
    "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 datasheet covers the 25AA040/25LC040/25C040 family in one document. The 25LC040T-I is the tape-a; The datasheet header states that the 25AA040/25LC040/25C040 is not recommended for new designs and p"
        ],
        "pages_sent": 22,
        "cost_usd": 0.0896,
        "at": "2026-10-28T20:19:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e2a883d52085bec0d05a04e0a61bc34f.pdf",
        "pages": 22,
        "sha256": "01a3497577b9b0de",
        "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": "25lc040t-i.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "25lc040t-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "542010e2071741c8928c8d8c550dddaadaece9ce31e20a078e615e5e254dd64f",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SN",
      "source_page": 14,
      "D": {
        "nom_mm": 4.9,
        "range_mm": [
          4.8,
          5.0
        ]
      },
      "E1": {
        "nom_mm": 3.91,
        "range_mm": [
          3.71,
          3.99
        ]
      },
      "E": {
        "nom_mm": 6.02,
        "range_mm": [
          5.79,
          6.2
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.55,
        "range_mm": [
          1.35,
          1.75
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "25lc040t-i.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}