component
AT28BV64B-20SU-T
Public Made by Adomby adom
Microchip Tech EEPROM, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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Publish 0.1.0
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{
"slug": "at28bv64b-20su-t",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech EEPROM, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"memory",
"at28bv64b-20su-t",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"at28bv64b-20su-t.kicad_sym",
"at28bv64b-20su-t.kicad_mod",
"at28bv64b-20su-t.glb",
"at28bv64b-20su-t.step",
"at28bv64b-20su-t.lbr",
"docs/hero.png",
"docs/at28bv64b-20su-t-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"at28bv64b-20su-t-hero.glb",
"at28bv64b-20su-t-hero.overlay.json",
"at28bv64b-20su-t-etched.glb"
],
"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": -0.0,
"centre_offset_mm": 0.0,
"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": -0.0,
"centre_offset_mm": 0.0,
"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": [
10.0,
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"
}
}
}
}