AT28C64B-15PU

{
  "schema_version": 1,
  "type": "component",
  "slug": "at28c64b-15pu",
  "title": "AT28C64B-15PU",
  "brief": "Microchip Tech EEPROM, DIP-28-600mil. 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",
    "at28c64b-15pu",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AT28C64B-15PU",
    "manufacturer": "Microchip Tech",
    "package": "DIP-28-600mil",
    "pin_count": 28,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/946fc4f4db954ad390ffa69b5455c261.pdf",
    "parts": {
      "symbol": "at28c64b-15pu.kicad_sym",
      "footprint": "at28c64b-15pu.kicad_mod",
      "model_3d": "at28c64b-15pu-hero.glb",
      "model_3d_plain": "at28c64b-15pu-etched.glb",
      "model_3d_step": "at28c64b-15pu-etched.step",
      "model_3d_step_plain": "at28c64b-15pu.step",
      "lbr": "at28c64b-15pu.lbr"
    },
    "distributor_links": {
      "lcsc": "C41982",
      "digikey": "AT28C64B-15PU-ND",
      "mouser": "556-AT28C64B15PU"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T00:14:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "AT28C64B-15PU-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-AT28C64B15PU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin on the 28-lead PDIP; it has no internal connection."
      },
      {
        "number": "2",
        "name": "A12",
        "type": "input",
        "description": "Address input; A6 to A12 select the page, and all bytes of a page write must share the same A6 to A12 state on each WE high-to-low transition."
      },
      {
        "number": "3",
        "name": "A7",
        "type": "input",
        "description": "Address input; part of the A6 to A12 page address that must remain constant during a page write."
      },
      {
        "number": "4",
        "name": "A6",
        "type": "input",
        "description": "Address input; part of the A6 to A12 page address that must remain constant during a page write."
      },
      {
        "number": "5",
        "name": "A5",
        "type": "input",
        "description": "Address input; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "input",
        "description": "Address input; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "7",
        "name": "A3",
        "type": "input",
        "description": "Address input; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "8",
        "name": "A2",
        "type": "input",
        "description": "Address input; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "9",
        "name": "A1",
        "type": "input",
        "description": "Address input; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "10",
        "name": "A0",
        "type": "input",
        "description": "Address input; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "11",
        "name": "I/O0",
        "type": "bidirectional",
        "description": "Data input/output; outputs go to high impedance when CE or OE is high."
      },
      {
        "number": "12",
        "name": "I/O1",
        "type": "bidirectional",
        "description": "Data input/output; outputs go to high impedance when CE or OE is high."
      },
      {
        "number": "13",
        "name": "I/O2",
        "type": "bidirectional",
        "description": "Data input/output; outputs go to high impedance when CE or OE is high."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "15",
        "name": "I/O3",
        "type": "bidirectional",
        "description": "Data input/output; outputs go to high impedance when CE or OE is high."
      },
      {
        "number": "16",
        "name": "I/O4",
        "type": "bidirectional",
        "description": "Data input/output; outputs go to high impedance when CE or OE is high."
      },
      {
        "number": "17",
        "name": "I/O5",
        "type": "bidirectional",
        "description": "Data input/output; outputs go to high impedance when CE or OE is high."
      },
      {
        "number": "18",
        "name": "I/O6",
        "type": "bidirectional",
        "description": "Data input/output; I/O6 toggles during a write cycle and stops when the write completes (toggle bit)."
      },
      {
        "number": "19",
        "name": "I/O7",
        "type": "bidirectional",
        "description": "Data input/output; the complement of written data appears here during a write cycle (DATA Polling) and true data once the write completes."
      },
      {
        "number": "20",
        "name": "CE",
        "type": "input",
        "description": "Chip enable; CE must be low with OE low and WE high to read, and a high level puts the device in standby with CMOS standby current below 100 µA."
      },
      {
        "number": "21",
        "name": "A10",
        "type": "input",
        "description": "Address input; A10 is one of the memory address bits."
      },
      {
        "number": "22",
        "name": "OE",
        "type": "input",
        "description": "Output enable; with CE low and WE high, OE low asserts the addressed data on the outputs, and OE high holds the outputs in high impedance."
      },
      {
        "number": "23",
        "name": "A11",
        "type": "input",
        "description": "Address input; part of the A6 to A12 page address that must remain constant during a page write."
      },
      {
        "number": "24",
        "name": "A9",
        "type": "input",
        "description": "Address input; raising A9 to 12.0 V ±0.5 V with addresses 1FC0H to 1FFFH accesses the 64-byte device identification EEPROM, and absolute maximum on A9 is -0.6 V to +13.5 V."
      },
      {
        "number": "25",
        "name": "A8",
        "type": "input",
        "description": "Address input; part of the A6 to A12 page address that must remain constant during a page write."
      },
      {
        "number": "26",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin on the 28-lead PDIP; it has no internal connection."
      },
      {
        "number": "27",
        "name": "WE",
        "type": "input",
        "description": "Write enable; a low pulse on WE with CE low and OE high starts a write cycle, and pulses shorter than 15 ns (typical) are filtered out."
      },
      {
        "number": "28",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 5 V ±10% per the DC and AC operating range."
      }
    ],
    "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 gives the PDIP pinout only as a text-extracted top-view diagram with no explicit pin-n; The datasheet's pin-description table lists DC (Don't Connect) only for the PLCC and TSOP variants; ",
          "1/28 pins cited to the wrong page (name found elsewhere): ['28:VCC@p5']"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0723,
        "at": "2026-10-30T00:14:25"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/946fc4f4db954ad390ffa69b5455c261.pdf",
        "pages": 18,
        "sha256": "fa7183edcd4cbf3c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "at28c64b-15pu.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          35.56,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7bf4503e368ad9b7a3eddfa94bc8dee656da5d6921b677e17307b3d7f29177ab",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at28c64b-15pu-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          35.56,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e98ae752d0448312529282b612e205f0c1d44adad80dc70c9d0e7f30ec1b0490",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "DIP-28-600mil",
      "Category": "Memory",
      "Pins": "28"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "fa7183edcd4cbf3c0e41155cb8f082c1ae02471e104e660b2f469ea49a78adab",
      "rows": [
        {
          "name": "Operating Temperature (Case)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC Power Supply",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC Power Supply tolerance (5V ±10%)",
          "symbol": "VCC",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC Active Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "f = 5 MHz; IOUT = 0 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC Standby Current CMOS",
          "symbol": "ISB1",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "CE = VCC - 0.3V to VCC + 1V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC Standby Current TTL",
          "symbol": "ISB2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "CE = 2.0V to VCC + 1V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Load Current",
          "symbol": "ILI",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VIN = 0V to VCC + 1V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current",
          "symbol": "ILO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VI/O = 0V to VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input High Voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 2.1 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output High Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "IOH = -400 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Address to Output Delay (AT28C64B-15)",
          "symbol": "tACC",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CE to Output Delay (AT28C64B-15)",
          "symbol": "tCE",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OE to Output Delay (AT28C64B-15)",
          "symbol": "tOE",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CE or OE to Output Float (AT28C64B-15)",
          "symbol": "tDF",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 50,
          "conditions": "CL = 5 pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Hold from OE, CE or Address, whichever occurred first (AT28C64B-15)",
          "symbol": "tOH",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Pin Capacitance",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 4,
          "max": 6,
          "conditions": "VIN = 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Pin Capacitance",
          "symbol": "COUT",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 8,
          "max": 12,
          "conditions": "VOUT = 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Address, OE Setup Time",
          "symbol": "tAS, tOES",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Address Hold Time",
          "symbol": "tAH",
          "kind": "timing",
          "unit": "ns",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Chip Select Setup Time",
          "symbol": "tCS",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Chip Select Hold Time",
          "symbol": "tCH",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Write Pulse Width (WE or CE)",
          "symbol": "tWP",
          "kind": "timing",
          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Data Setup Time",
          "symbol": "tDS",
          "kind": "timing",
          "unit": "ns",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Data, OE Hold Time",
          "symbol": "tDH, tOEH",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Write Cycle Time (standard)",
          "symbol": "tWC",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Byte Load Cycle Time",
          "symbol": "tBLC",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Write Pulse Width High",
          "symbol": "tWPH",
          "kind": "timing",
          "unit": "ns",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Chip Erase Setup Time",
          "symbol": "tS",
          "kind": "timing",
          "unit": "µs",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Chip Erase Hold Time",
          "symbol": "tH",
          "kind": "timing",
          "unit": "µs",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Chip Erase Write Time",
          "symbol": "tW",
          "kind": "timing",
          "unit": "ms",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Data Hold Time (DATA Polling)",
          "symbol": "tDH",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OE Hold Time (DATA Polling)",
          "symbol": "tOEH",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Write Recovery Time (DATA Polling)",
          "symbol": "tWR",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Data Hold Time (Toggle Bit)",
          "symbol": "tDH",
          "kind": "timing",
          "unit": "ns",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OE Hold Time (Toggle Bit)",
          "symbol": "tOEH",
          "kind": "timing",
          "unit": "ns",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OE High Pulse (Toggle Bit)",
          "symbol": "tOEHP",
          "kind": "timing",
          "unit": "ns",
          "min": 150,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Write Recovery Time (Toggle Bit)",
          "symbol": "tWR",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Temperature Under Bias",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "All Input Voltages (including NC pins) with respect to Ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.6,
          "typ": null,
          "max": 6.25,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "All Output Voltages with respect to Ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.6,
          "typ": null,
          "max": null,
          "conditions": "Maximum printed as VCC + 0.6 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Voltage on OE and A9 with respect to Ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.6,
          "typ": null,
          "max": 13.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "at28c64b-15pu"
  ],
  "discovery_pitch": "AT28C64B-15PU (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",
    "at28c64b-15pu.kicad_sym",
    "at28c64b-15pu.kicad_mod",
    "at28c64b-15pu.glb",
    "at28c64b-15pu.step",
    "at28c64b-15pu.lbr",
    "docs/hero.png",
    "docs/at28c64b-15pu-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "at28c64b-15pu-hero.glb",
    "at28c64b-15pu-hero.overlay.json",
    "at28c64b-15pu-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}