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Ray Set visibility: public 7ce0369 2d ago
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{
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  "type": "component",
  "slug": "25aa640at-i",
  "title": "25AA640AT-I",
  "brief": "Microchip Tech Pre-ordered Chips, 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": [
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    "interface ics",
    "25aa640at-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "25AA640AT-I",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c63662906cec6287945fd057ce59fc72.pdf",
    "parts": {
      "symbol": "25aa640at-i.kicad_sym",
      "footprint": "25aa640at-i.kicad_mod",
      "model_3d": "25aa640at-i-hero.glb",
      "model_3d_plain": "25aa640at-i-etched.glb",
      "model_3d_step": "25aa640at-i-etched.step",
      "model_3d_step_plain": "25aa640at-i.step",
      "lbr": "25aa640at-i.lbr"
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    "distributor_links": {
      "lcsc": "C2061056"
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    "distributor_check": {
      "checked_at": "2026-10-29T00:57:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "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 it into Standby mode, though a programming cycle already in progress will complete."
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      {
        "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 is high-impedance when the device is deselected or paused."
      },
      {
        "number": "3",
        "name": "WP",
        "type": "input",
        "description": "Write-Protect: when WPEN is set, a low level on WP disables writes to the nonvolatile bits of the STATUS register, and the WP function is blocked when WPEN is low."
      },
      {
        "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, which are 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, synchronizing communication with the master."
      },
      {
        "number": "7",
        "name": "HOLD",
        "type": "input",
        "description": "Hold input: must be held high when unused; pulling it low while SCK is low pauses serial communication and tri-states SO, and it must be brought high while SCK is low to resume."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; the 25AA640A is specified for 1.8V 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: KiCad type set to 'output' based on the datasheet; the datasheet describes SO as going to high-imped; The SN (SOIC) pinout is the standard arrangement (CS=1 ... VCC=8). The X-rotated pinout in the datas; The 'Standard' pinout table and pin-diagram text list the PDIP and SOIC packages together; the SOIC-"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0402,
        "at": "2026-10-29T00:56:51"
      },
      "datasheet": {
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        "pages": 36,
        "sha256": "a867cd3d278e6f20",
        "source_tier": "mfr"
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      "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"
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    "models_3d": [
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        "file": "25aa640at-i.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "25aa640at-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
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        "sha256": "8bc7a364881baca076f5edb4248bd806c91e1836653d9018167e8d9e5694c2e2",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Interface ICs",
      "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": "a867cd3d278e6f202a4d51b9c9e112e0a5eb343962d8fa5ef2b5648bc0d0bf5d"
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    "characteristics": {
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      "source": "datasheet",
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      "rows": [
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          "name": "All inputs and outputs w.r.t. VSS",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.6,
          "typ": null,
          "max": 1,
          "conditions": "Printed as -0.6V to VCC +1.0V; max entry is the +1.0V offset above VCC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
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          "source_page": 2,
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        {
          "name": "Ambient temperature under bias",
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          "min": -40,
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        },
        {
          "name": "High-level input voltage (min 0.7 VCC; max VCC +1)",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V (min = 0.7 × VCC; max = VCC + 1 V)",
          "min": 0.7,
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        {
          "name": "Low-level input voltage (max 0.3 VCC)",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V (min -0.3 V; max = 0.3 × VCC)",
          "min": -0.3,
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          "max": 0.3,
          "conditions": "VCC ≥ 2.7V",
          "source_page": 2,
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        {
          "name": "Low-level input voltage (max 0.2 VCC)",
          "symbol": "VIL2",
          "kind": "electrical",
          "unit": "V (min -0.3 V; max = 0.2 × VCC)",
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        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
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          "max": 0.4,
          "conditions": "IOL = 2.1 mA",
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          "max": 0.2,
          "conditions": "IOL = 1.0 mA, VCC < 2.5V",
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        },
        {
          "name": "High-level output voltage (min VCC -0.5)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V (min = VCC − 0.5 V)",
          "min": -0.5,
          "typ": null,
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          "conditions": "IOH = -400 µA",
          "source_page": 2,
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        {
          "name": "Input leakage current",
          "symbol": "ILI",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "CS = VCC, VIN = VSS or VCC",
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          "kind": "electrical",
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          "conditions": "CS = VCC, VOUT = VSS or VCC",
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        {
          "name": "Read operating current",
          "symbol": "ICC",
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          "conditions": "VCC = 5.5V; FCLK = 10.0 MHz; SO = Open",
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          "name": "Standby current (85°C)",
          "symbol": "ICCS",
          "kind": "electrical",
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          "conditions": "CS = VCC = 5.5V, Inputs tied to VCC or VSS, 85°C",
          "source_page": 2,
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        {
          "name": "Clock frequency (4.5V to 5.5V)",
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          "name": "CS setup time",
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          "name": "CS disable time",
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