component
ATSAMD20J18A-AN
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "atsamd20j18a-an",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"single chip microcomputer-microcontroller",
"atsamd20j18a-an",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
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"files": [
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"README.md",
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"atsamd20j18a-an.kicad_mod",
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"atsamd20j18a-an.step",
"atsamd20j18a-an.lbr",
"docs/hero.png",
"docs/atsamd20j18a-an-datasheet.pdf",
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"atsamd20j18a-an-etched.glb"
],
"component": {
"mpn": "ATSAMD20J18A-AN",
"manufacturer": "Microchip Tech",
"package": "TQFP-64(10x10)",
"pin_count": 64,
"category": "Single Chip Microcomputer/Microcontroller",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/70a692cf8b8dcfe634d1cacc20eac2ef.pdf",
"parts": {
"symbol": "atsamd20j18a-an.kicad_sym",
"footprint": "atsamd20j18a-an.kicad_mod",
"model_3d": "atsamd20j18a-an-hero.glb",
"model_3d_plain": "atsamd20j18a-an-etched.glb",
"model_3d_step": "atsamd20j18a-an-etched.step",
"model_3d_step_plain": "atsamd20j18a-an.step",
"lbr": "atsamd20j18a-an.lbr"
},
"distributor_links": {
"lcsc": "C619201",
"digikey": "ATSAMD20J18A-AN-ND",
"mouser": "556-ATSAMD20J18A-AN"
},
"distributor_check": {
"checked_at": "2026-11-02T16:56:51Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAMD20J18A-AN-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATSAMD20J18A-AN",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (also XIN32 oscillator function)."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (also XOUT32 oscillator function)."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (analog input capable)."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (analog input capable)."
},
{
"number": "5",
"name": "PB04",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "6",
"name": "PB05",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "7",
"name": "GNDANA",
"type": "power_in",
"description": "Ground for the analog power domain."
},
{
"number": "8",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply for the ADC, AC, DAC, PTC and oscillators, 1.62V to 3.63V."
},
{
"number": "9",
"name": "PB06",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "10",
"name": "PB07",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "11",
"name": "PB08",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "12",
"name": "PB09",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "13",
"name": "PA04",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "14",
"name": "PA05",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "15",
"name": "PA06",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "16",
"name": "PA07",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "17",
"name": "PA08",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "18",
"name": "PA09",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "19",
"name": "PA10",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "20",
"name": "PA11",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "21",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply, 1.62V to 3.63V, powering I/O lines, OSC8M and XOSC."
},
{
"number": "22",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "23",
"name": "PB10",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "24",
"name": "PB11",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "25",
"name": "PB12",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "26",
"name": "PB13",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "27",
"name": "PB14",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "28",
"name": "PB15",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "29",
"name": "PA12",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "30",
"name": "PA13",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "31",
"name": "PA14",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer (also XIN oscillator function)."
},
{
"number": "32",
"name": "PA15",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer (also XOUT oscillator function)."
},
{
"number": "33",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "34",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply, 1.62V to 3.63V, powering I/O lines, OSC8M and XOSC."
},
{
"number": "35",
"name": "PA16",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "36",
"name": "PA17",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "37",
"name": "PA18",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "38",
"name": "PA19",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "39",
"name": "PB16",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "40",
"name": "PB17",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "41",
"name": "PA20",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "42",
"name": "PA21",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "43",
"name": "PA22",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "44",
"name": "PA23",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "45",
"name": "PA24",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "46",
"name": "PA25",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "47",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "48",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply, 1.62V to 3.63V, powering I/O lines, OSC8M and XOSC."
},
{
"number": "49",
"name": "PB22",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "50",
"name": "PB23",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "51",
"name": "PA27",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "52",
"name": "RESET",
"type": "input",
"description": "External active-low reset input (low-level reset), with an internal pull-up resistor."
},
{
"number": "53",
"name": "PA28",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "54",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "55",
"name": "VDDCORE",
"type": "power_out",
"description": "Internal regulated voltage output at 1.2V that powers the core, memories, peripherals and DFLL48M; external decoupling pin."
},
{
"number": "56",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply to the I/O lines and the internal voltage regulator, 1.62V to 3.63V."
},
{
"number": "57",
"name": "PA30",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain; also carries the SWCLK debug function."
},
{
"number": "58",
"name": "PA31",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group A on the VDDIO supply domain; also carries the SWDIO debug function when a debugger is present."
},
{
"number": "59",
"name": "PB30",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "60",
"name": "PB31",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDIO supply domain, with peripheral functions selectable via the PORT multiplexer."
},
{
"number": "61",
"name": "PB00",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (analog input capable)."
},
{
"number": "62",
"name": "PB01",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (analog input capable)."
},
{
"number": "63",
"name": "PB02",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (analog input capable)."
},
{
"number": "64",
"name": "PB03",
"type": "bidirectional",
"description": "General-purpose I/O pin of PORT group B on the VDDANA supply domain, with peripheral functions selectable via the PORT multiplexer (analog input capable)."
}
],
"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 TQFP64/VQFN64 pinout for the SAM D20J family, and the ordering code confirms",
"7/64 pins cited to the wrong page (name found elsewhere): ['22:GND@p27', '33:GND@p27', '34:VDDIO@p27', '52:RESET@p21']"
],
"pages_sent": 142,
"cost_usd": 0.1595,
"at": "2026-11-02T16:56:34"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/70a692cf8b8dcfe634d1cacc20eac2ef.pdf",
"pages": 731,
"sha256": "2505526f248dd8c2",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 64,
"described": 64,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atsamd20j18a-an.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "60567e81b0770b6c519104183a7a05ba52dddc11146b5fbe21434fbb5801696c",
"checked": "2026-11-02",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsamd20j18a-an-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "64038093aad7c08cdc4086d361a11314352561165b829d3a1dc925f5e5fa4885",
"checked": "2026-11-02",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}