25LC640T-E

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  "type": "component",
  "slug": "25lc640t-e",
  "title": "25LC640T-E",
  "brief": "Microchip Tech EEPROM, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "25LC640T-E",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c749352ff198b409809cb1e3ac002a91.pdf",
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    "distributor_links": {
      "lcsc": "C2062787"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T16:14:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "CS",
        "type": "input",
        "description": "Chip Select input: a low level selects the device, a high level deselects it and forces Standby mode, and a low-to-high transition after a valid write sequence starts the internal write cycle."
      },
      {
        "number": "2",
        "name": "SO",
        "type": "tri_state",
        "description": "Serial data output that shifts data out after the falling edge of SCK during reads and goes to the high-impedance state when the device is deselected or HOLD is pulled low."
      },
      {
        "number": "3",
        "name": "WP",
        "type": "input",
        "description": "Write-protect input that, when low while WPEN is high, disables writes to the nonvolatile bits in the STATUS register; the pin is blocked when WPEN is low."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device; all inputs and outputs are specified with respect to VSS."
      },
      {
        "number": "5",
        "name": "SI",
        "type": "input",
        "description": "Serial data input that 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."
      },
      {
        "number": "7",
        "name": "HOLD",
        "type": "input",
        "description": "Hold input that pauses serial communication when pulled low while SCK is low, must be held high when unused, and tri-states SO when lowered."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; absolute maximum VCC is 7.0 V and the 25LC640 is specified at 2.5 V to 5.5 V (4.5 V to 5.5 V for the 3 MHz / 2.5 MHz rating)."
      }
    ],
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        "guard_notes": [
          "extractor flagged: The MPN 25LC640T-E has no package suffix. The 'T' denotes tape and reel and 'E' is the automotive te; SO is typed as tri_state because the datasheet states it goes to high-impedance when the device is d"
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        "pages_sent": 24,
        "cost_usd": 0.0874,
        "at": "2026-10-30T16:13:57"
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        "total": 8,
        "described": 8,
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  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Memory",
      "Pins": "8"
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