component
ATSAMD21G18A-AU
Public Made by Adomby adom
Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "atsamd21g18a-au",
"title": "ATSAMD21G18A-AU",
"brief": "Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-48(7x7). 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",
"embedded processors & controllers",
"atsamd21g18a-au",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATSAMD21G18A-AU",
"manufacturer": "Microchip Tech",
"package": "TQFP-48(7x7)",
"pin_count": 48,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586176135768391680",
"parts": {
"symbol": "atsamd21g18a-au.kicad_sym",
"footprint": "atsamd21g18a-au.kicad_mod",
"model_3d": "atsamd21g18a-au-hero.glb",
"model_3d_plain": "atsamd21g18a-au.glb",
"model_3d_step": "atsamd21g18a-au-etched.step",
"model_3d_step_plain": "atsamd21g18a-au.step",
"lbr": "atsamd21g18a-au.lbr"
},
"distributor_links": {
"lcsc": "C78624",
"digikey": "ATSAMD21G18A-AU-ND",
"mouser": "556-ATSAMD21G18A-AU"
},
"distributor_check": {
"checked_at": "2026-10-09T17:18:58Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAMD21G18A-AU-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATSAMD21G18A-AU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "Port A digital I/O line PA00; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "Port A digital I/O line PA01; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "Port A digital I/O line PA02; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "Port A digital I/O line PA03; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "5",
"name": "GNDANA",
"type": "power_in",
"description": "Ground for the analog circuitry; this summary gives no voltage limits for it."
},
{
"number": "6",
"name": "VDDANA",
"type": "power_in",
"description": "Supply for the analog circuitry; this summary gives no voltage limits for it."
},
{
"number": "7",
"name": "PB08",
"type": "bidirectional",
"description": "Port B digital I/O line PB08; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "8",
"name": "PB09",
"type": "bidirectional",
"description": "Port B digital I/O line PB09; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "9",
"name": "PA04",
"type": "bidirectional",
"description": "Port A digital I/O line PA04; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "10",
"name": "PA05",
"type": "bidirectional",
"description": "Port A digital I/O line PA05; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "11",
"name": "PA06",
"type": "bidirectional",
"description": "Port A digital I/O line PA06; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "12",
"name": "PA07",
"type": "bidirectional",
"description": "Port A digital I/O line PA07; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "13",
"name": "PA08",
"type": "bidirectional",
"description": "Port A digital I/O line PA08; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "14",
"name": "PA09",
"type": "bidirectional",
"description": "Port A digital I/O line PA09; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "15",
"name": "PA10",
"type": "bidirectional",
"description": "Port A digital I/O line PA10; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "16",
"name": "PA11",
"type": "bidirectional",
"description": "Port A digital I/O line PA11; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "17",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply for the digital pins; this summary gives no voltage limits for it."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "19",
"name": "PB10",
"type": "bidirectional",
"description": "Port B digital I/O line PB10; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "20",
"name": "PB11",
"type": "bidirectional",
"description": "Port B digital I/O line PB11; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "21",
"name": "PA12",
"type": "bidirectional",
"description": "Port A digital I/O line PA12; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "22",
"name": "PA13",
"type": "bidirectional",
"description": "Port A digital I/O line PA13; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "23",
"name": "PA14",
"type": "bidirectional",
"description": "Port A digital I/O line PA14; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "24",
"name": "PA15",
"type": "bidirectional",
"description": "Port A digital I/O line PA15; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "25",
"name": "PA16",
"type": "bidirectional",
"description": "Port A digital I/O line PA16; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "26",
"name": "PA17",
"type": "bidirectional",
"description": "Port A digital I/O line PA17; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "27",
"name": "PA18",
"type": "bidirectional",
"description": "Port A digital I/O line PA18; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "28",
"name": "PA19",
"type": "bidirectional",
"description": "Port A digital I/O line PA19; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "29",
"name": "PA20",
"type": "bidirectional",
"description": "Port A digital I/O line PA20; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "30",
"name": "PA21",
"type": "bidirectional",
"description": "Port A digital I/O line PA21; the name is taken from a stray label on the page because the printed pin 30 label is missing in the extracted text."
},
{
"number": "31",
"name": "PA22",
"type": "bidirectional",
"description": "Port A digital I/O line PA22; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "32",
"name": "PA23",
"type": "bidirectional",
"description": "Port A digital I/O line PA23; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "33",
"name": "PA24",
"type": "bidirectional",
"description": "Port A digital I/O line PA24; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "34",
"name": "PA25",
"type": "bidirectional",
"description": "Port A digital I/O line PA25; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "35",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "36",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply for the digital pins; this summary gives no voltage limits for it."
},
{
"number": "37",
"name": "PB22",
"type": "bidirectional",
"description": "Port B digital I/O line PB22; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "38",
"name": "PB23",
"type": "bidirectional",
"description": "Port B digital I/O line PB23; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "39",
"name": "PA27",
"type": "bidirectional",
"description": "Port A digital I/O line PA27; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "40",
"name": "RESET",
"type": "input",
"description": "Reset pin of the device; this summary gives no polarity or electrical limits for it."
},
{
"number": "41",
"name": "PA28",
"type": "bidirectional",
"description": "Port A digital I/O line PA28; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "42",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "43",
"name": "VDDCORE",
"type": "power_out",
"description": "Core supply pin, which the legend marks as a regulated output supply; this summary gives no voltage limits for it."
},
{
"number": "44",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply pin for the device; this summary gives no voltage limits for it."
},
{
"number": "45",
"name": "PA30",
"type": "bidirectional",
"description": "Port A digital I/O line PA30; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "46",
"name": "PA31",
"type": "bidirectional",
"description": "Port A digital I/O line PA31; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "47",
"name": "PB02",
"type": "bidirectional",
"description": "Port B digital I/O line PB02; this summary gives only the pin name and no electrical limits for it."
},
{
"number": "48",
"name": "PB03",
"type": "bidirectional",
"description": "Port B digital I/O line PB03; this summary gives only the pin name and no electrical limits for it."
}
],
"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: Pin 30 has no printed label in the extracted text. The name PA21 appears as a stray token above the ; The pinout figure gives only pin names and does not state per-pin functions, voltage limits, or elec; Pin types were assigned from the naming and the figure legend, which lists digital pin, analog pin, "
],
"pages_sent": 60,
"cost_usd": 0.255,
"at": "2026-10-09T17:16:48"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586176135768391680",
"pages": 60,
"sha256": "786b60951d0bb37e",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 48,
"described": 48,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atsamd21g18a-au.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
1.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",
"checked": "2026-10-09",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsamd21g18a-au-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
1.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "8dc6a77d05c12bd72e7645df72656b602bb1141e4f7fcaf1c12ad7ac713524a4",
"checked": "2026-10-09",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "TQFP-48(7x7)",
"Category": "Embedded Processors & Controllers",
"Pins": "48"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"atsamd21g18a-au"
],
"discovery_pitch": "ATSAMD21G18A-AU (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",
"atsamd21g18a-au.kicad_sym",
"atsamd21g18a-au.kicad_mod",
"atsamd21g18a-au.glb",
"atsamd21g18a-au.step",
"atsamd21g18a-au.lbr",
"docs/hero.png",
"docs/atsamd21g18a-au-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"atsamd21g18a-au-hero.glb",
"atsamd21g18a-au-hero.overlay.json"
],
"visibility": {
"public": true
}
}