main
Ray Set visibility: public 083b1fd
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{
  "schema_version": 1,
  "type": "component",
  "slug": "at28bv64b-20su-t",
  "title": "AT28BV64B-20SU-T",
  "brief": "Microchip Tech EEPROM, SOIC-28-300mil. 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",
    "at28bv64b-20su-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AT28BV64B-20SU-T",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-28-300mil",
    "pin_count": 28,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/dee5d5d6d1892f6596c0440622bb4bc1.pdf",
    "parts": {
      "symbol": "at28bv64b-20su-t.kicad_sym",
      "footprint": "at28bv64b-20su-t.kicad_mod",
      "model_3d": "at28bv64b-20su-t-hero.glb",
      "model_3d_plain": "at28bv64b-20su-t-etched.glb",
      "model_3d_step": "at28bv64b-20su-t-etched.step",
      "model_3d_step_plain": "at28bv64b-20su-t.step",
      "lbr": "at28bv64b-20su-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C2063878",
      "digikey": "AT28BV64B-20SU-TTR-ND",
      "mouser": "556-AT28BV64B20SUT"
    },
    "distributor_check": {
      "checked_at": "2026-11-12T07:27:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "AT28BV64B-20SU-TTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-AT28BV64B20SUT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect; the pin is not internally connected."
      },
      {
        "number": "2",
        "name": "A12",
        "type": "input",
        "description": "Address input A12; A6 to A12 define the page that all bytes of a page write must reside on."
      },
      {
        "number": "3",
        "name": "A7",
        "type": "input",
        "description": "Address input A7; A6 to A12 define the page that all bytes of a page write must reside on."
      },
      {
        "number": "4",
        "name": "A6",
        "type": "input",
        "description": "Address input A6; A6 to A12 define the page that all bytes of a page write must reside on."
      },
      {
        "number": "5",
        "name": "A5",
        "type": "input",
        "description": "Address input A5; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "input",
        "description": "Address input A4; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "7",
        "name": "A3",
        "type": "input",
        "description": "Address input A3; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "8",
        "name": "A2",
        "type": "input",
        "description": "Address input A2; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "9",
        "name": "A1",
        "type": "input",
        "description": "Address input A1; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "10",
        "name": "A0",
        "type": "input",
        "description": "Address input A0; A0 to A5 select which byte within the 64-byte page is written."
      },
      {
        "number": "11",
        "name": "I/O0",
        "type": "bidirectional",
        "description": "Data input/output bit 0 for read data and write data."
      },
      {
        "number": "12",
        "name": "I/O1",
        "type": "bidirectional",
        "description": "Data input/output bit 1 for read data and write data."
      },
      {
        "number": "13",
        "name": "I/O2",
        "type": "bidirectional",
        "description": "Data input/output bit 2 for read data and write data."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground; all input and output voltage limits are specified with respect to ground."
      },
      {
        "number": "15",
        "name": "I/O3",
        "type": "bidirectional",
        "description": "Data input/output bit 3 for read data and write data."
      },
      {
        "number": "16",
        "name": "I/O4",
        "type": "bidirectional",
        "description": "Data input/output bit 4 for read data and write data."
      },
      {
        "number": "17",
        "name": "I/O5",
        "type": "bidirectional",
        "description": "Data input/output bit 5 for read data and write data."
      },
      {
        "number": "18",
        "name": "I/O6",
        "type": "bidirectional",
        "description": "Data input/output bit 6; it toggles during a write cycle and can be used as a toggle-bit end-of-write indicator."
      },
      {
        "number": "19",
        "name": "I/O7",
        "type": "bidirectional",
        "description": "Data input/output bit 7; DATA polling on this pin shows the complement of the written data until the write cycle ends."
      },
      {
        "number": "20",
        "name": "CE",
        "type": "input",
        "description": "Chip enable; read requires CE low, and when CE is high the outputs are high impedance."
      },
      {
        "number": "21",
        "name": "A10",
        "type": "input",
        "description": "Address input A10; A6 to A12 define the page that all bytes of a page write must reside on."
      },
      {
        "number": "22",
        "name": "OE",
        "type": "input",
        "description": "Output enable; with CE low and WE high, data is driven onto the I/O pins when OE is low."
      },
      {
        "number": "23",
        "name": "A11",
        "type": "input",
        "description": "Address input A11; A6 to A12 define the page that all bytes of a page write must reside on."
      },
      {
        "number": "24",
        "name": "A9",
        "type": "input",
        "description": "Address input A9; raising it to 12V ±0.5V accesses the 64-byte device identification area at addresses 0000H to 003FH."
      },
      {
        "number": "25",
        "name": "A8",
        "type": "input",
        "description": "Address input A8; A6 to A12 define the page that all bytes of a page write must reside on."
      },
      {
        "number": "26",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect; the pin is not internally connected."
      },
      {
        "number": "27",
        "name": "WE",
        "type": "input",
        "description": "Write enable; a low pulse on WE with CE low and OE high initiates a write cycle."
      },
      {
        "number": "28",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply; 2.7V to 3.6V for the AT28BV64B-20 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 requested MPN ends in '-T' (tape and reel), but the ordering table on page 12 lists the 28S SOIC; The datasheet provides a 28-lead SOIC top-view diagram in text form only, and the pin numbers were m; The datasheet does not give a spec field in this extraction schema. Headline ratings (2.7V to 3.6V s"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0043,
        "at": "2026-11-12T07:27:11"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/dee5d5d6d1892f6596c0440622bb4bc1.pdf",
        "pages": 17,
        "sha256": "d0489c27bca44b69",
        "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": "at28bv64b-20su-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          17.9,
          2.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b889a13dbe9ec59e79fa9f1b5118b00bfa54f9582392335ff3365b64afc264b1",
        "checked": "2026-11-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at28bv64b-20su-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          17.9,
          2.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1b7ab8f03718c6c02520aff6f93b7dc6edc85d77c6cc830d16abd454f3550cd7",
        "checked": "2026-11-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "28S",
      "source_page": 14,
      "D": {
        "nom_mm": 17.9,
        "range_mm": [
          17.7,
          18.1
        ]
      },
      "E1": {
        "nom_mm": 7.5,
        "range_mm": [
          7.4,
          7.6
        ]
      },
      "E": {
        "nom_mm": 10.325,
        "range_mm": [
          10,
          10.65
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 2.5,
        "range_mm": [
          2.35,
          2.65
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "at28bv64b-20su-t.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-28-300mil",
      "Category": "Memory",
      "Pins": "28"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d0489c27bca44b69e506c3d271370ff97af81363ccccfedc47b479f54316e3ce",
      "rows": [
        {
          "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": "Upper limit 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"
        },
        {
          "name": "Operating Temperature (Case)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "AT28BV64B-20",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC Power Supply",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 3.6,
          "conditions": "AT28BV64B-20",
          "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": 6,
          "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": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC Standby Current CMOS",
          "symbol": "ISB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "CE = VCC - 0.3V to VCC + 1V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC Active Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "f = 5 MHz; IOUT = 0 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input High Voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.45,
          "conditions": "IOL = 1.6 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output High Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "IOH = -100 µA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Pin Capacitance",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 4,
          "max": 6,
          "conditions": "f = 1 MHz, T = 25°C; VIN = 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Pin Capacitance",
          "symbol": "COUT",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 8,
          "max": 12,
          "conditions": "f = 1 MHz, T = 25°C; VOUT = 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Address to Output Delay",
          "symbol": "tACC",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CE to Output Delay",
          "symbol": "tCE",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OE to Output Delay",
          "symbol": "tOE",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CE or OE to Output Float",
          "symbol": "tDF",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 55,
          "conditions": "CL = 5pF (note 3)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Hold from OE, CE or Address, Whichever Occurred First",
          "symbol": "tOH",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Address, OE Set-up 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": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Chip Select Set-up 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": 200,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Data Set-up Time",
          "symbol": "tDS",
          "kind": "timing",
          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
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