main
Ray Set visibility: public f5d091f 8h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "24aa256t-i",
  "title": "24AA256T-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",
    "24aa256t-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "24AA256T-I",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879837423407104",
    "parts": {
      "symbol": "24aa256t-i.kicad_sym",
      "footprint": "24aa256t-i.kicad_mod",
      "model_3d": "24aa256t-i-hero.glb",
      "model_3d_plain": "24aa256t-i-etched.glb",
      "model_3d_step": "24aa256t-i-etched.step",
      "model_3d_step_plain": "24aa256t-i.step",
      "lbr": "24aa256t-i.lbr"
    },
    "distributor_links": {
      "lcsc": "C152172"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T14:07:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "User-configurable chip address input that must be hard-wired or driven to VCC or VSS (logic 1 or 0) before normal device operation."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "User-configurable chip address input that must be connected to VCC or VSS, or driven to logic 0 or 1 before normal operation when controlled by a microcontroller."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "User-configurable chip address input that must be connected to VCC or VSS, or driven to logic 0 or 1 before normal operation when controlled by a microcontroller."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Open-drain serial data pin that requires a pull-up resistor to VCC (typically 10 kΩ for 100 kHz, 2 kΩ for 400 kHz and 1 MHz), and may change only while SCL is low."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input used to synchronize data transfer to and from the device."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Write-protect input that must be tied to VSS (writes enabled) or VCC (writes inhibited, reads unaffected)."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage pin; +1.7V to 5.5V for the 24AA256."
      }
    ],
    "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": [],
        "pages_sent": 14,
        "cost_usd": 0.0531,
        "at": "2026-10-18T14:03:31"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879837423407104",
        "pages": 42,
        "sha256": "baed9ce6a87b8033",
        "source_tier": "lcsc"
      },
      "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": [
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        "file": "24aa256t-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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "24aa256t-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "footprint_binding": "identity",
        "sha256": "8be5a49ee26c83565a337166bfb327bab5206340873c49a1ad2d3bd7ad51aa4c",
        "checked": "2026-10-18",
        "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": "Package: P = Plastic DIP (300 mil body), 8-lead SN = Plastic SOIC (3.90 mm body), 8-lead",
        "page": 39,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "baed9ce6a87b803346305d5369c53968f32c466f28a540c9fd130dba2e144f1c"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "baed9ce6a87b803346305d5369c53968f32c466f28a540c9fd130dba2e144f1c",
      "rows": [
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "VCC ≥ 2.5V",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
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          "typ": null,
          "max": 0.2,
          "conditions": "VCC < 2.5V",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hysteresis of Schmitt Trigger inputs (SDA, SCL pins)",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "V",
          "min": 0.05,
          "typ": null,
          "max": null,
          "conditions": "VCC ≥ 2.5V (Note)",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 3.0 mA @ VCC = 4.5V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "ILI",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VIN = VSS or VCC, WP = VSS",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Output leakage current",
          "symbol": "ILO",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VOUT = VSS or VCC",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Pin capacitance (all inputs/outputs)",
          "symbol": "CIN, COUT",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VCC = 5.0V (Note); TA = 25°C, FCLK = 1 MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Read operating current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "VCC = 5.5V, SCL = 400 kHz",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Write operating current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "VCC = 5.5V",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Standby current",
          "symbol": "ICCS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "TA = -40°C to +85°C; SCL = SDA = VCC = 5.5V; A0, A1, A2, WP = VSS",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Standby current",
          "symbol": "ICCS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "TA = -40°C to +85°C; SCL = SDA = VCC = 3.6V; A0, A1, A2, WP = VSS",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Clock frequency",
          "symbol": "FCLK",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "1.7V ≤ VCC ≤ 2.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clock frequency",
          "symbol": "FCLK",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "2.5V ≤ VCC ≤ 5.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clock high time",
          "symbol": "THIGH",
          "kind": "timing",
          "unit": "ns",
          "min": 4000,
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          "conditions": "1.7V ≤ VCC ≤ 2.5V",
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          "source": "datasheet"
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        {
          "name": "Clock high time",
          "symbol": "THIGH",
          "kind": "timing",
          "unit": "ns",
          "min": 600,
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          "max": null,
          "conditions": "2.5V ≤ VCC ≤ 5.5V",
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          "source": "datasheet"
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        {
          "name": "Clock low time",
          "symbol": "TLOW",
          "kind": "timing",
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          "min": 4700,
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          "conditions": "1.7V ≤ VCC ≤ 2.5V",
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        {
          "name": "Clock low time",
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          "kind": "timing",
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          "min": 1300,
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          "max": null,
          "conditions": "2.5V ≤ VCC ≤ 5.5V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "SDA and SCL rise time (Note 1)",
          "symbol": "TR",
          "kind": "timing",
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          "max": 1000,
          "conditions": "1.7V ≤ VCC ≤ 2.5V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "SDA and SCL rise time (Note 1)",
          "symbol": "TR",
          "kind": "timing",
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          "conditions": "2.5V ≤ VCC ≤ 5.5V",
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          "source": "datasheet"
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        {
          "name": "SDA and SCL fall time (Note 1)",
          "symbol": "TF",
          "kind": "timing",
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          "conditions": "All except, 24FC256",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Start condition hold time",
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          "source": "datasheet"
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        {
          "name": "Start condition hold time",
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          "conditions": "2.5V ≤ VCC ≤ 5.5V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Start condition setup time",
          "symbol": "TSU:STA",
          "kind": "timing",
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        {
          "name": "Start condition setup time",
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          "source": "datasheet"
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        {
          "name": "Data input hold time",
          "symbol": "THD:DAT",
          "kind": "timing",
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          "conditions": "(Note 2)",
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        {
          "name": "Data input setup time",
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        {
          "name": "Data input setup time",
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          "name": "Stop condition setup time",
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          "name": "Stop condition setup time",
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          "name": "WP setup time",
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          "name": "WP hold time",
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        {
          "name": "Output valid from clock (Note 2)",
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          "name": "Output valid from clock (Note 2)",
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          "source": "datasheet"
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        {
          "name": "Bus free time: Time the bus must be free before a new transmission can start",
          "symbol": "TBUF",
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        {
          "name": "Bus free time: Time the bus must be free before a new transmission can start",
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          "source": "datasheet"
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        {
          "name": "Output fall time from VIH minimum to VIL maximum",
          "symbol": "TOF",
          "kind": "timing",
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          "conditions": "CB ≤ 100 pF; All except 24FC256 (Note 1)",
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          "source": "datasheet"
        },
        {
          "name": "Input filter spike suppression (SDA and SCL pins)",
          "symbol": "TSP",
          "kind": "timing",
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          "conditions": "All except, 24FC256 (Notes 1 and 3)",
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          "source": "datasheet"
        },
        {
          "name": "Write cycle time (byte or page)",
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          "conditions": "",
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        {
          "name": "Endurance",
          "symbol": "",
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          "unit": "cycles",
          "min": 1000000,
          "typ": null,
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          "conditions": "Page mode, 25°C, 5.5V (Note 4)",
          "source_page": 4,
          "source": "datasheet"
        },
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