component
ATSAML21G16B-AUT
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), 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": "atsaml21g16b-aut",
"title": "ATSAML21G16B-AUT",
"brief": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), 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",
"single chip microcomputer-microcontroller",
"atsaml21g16b-aut",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATSAML21G16B-AUT",
"manufacturer": "Microchip Tech",
"package": "TQFP-48(7x7)",
"pin_count": 48,
"category": "Single Chip Microcomputer/Microcontroller",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/41942ba97f76aad6042188ffe9080a2f.pdf",
"parts": {
"symbol": "atsaml21g16b-aut.kicad_sym",
"footprint": "atsaml21g16b-aut.kicad_mod",
"model_3d": "atsaml21g16b-aut-hero.glb",
"model_3d_plain": "atsaml21g16b-aut-etched.glb",
"model_3d_step": "atsaml21g16b-aut-etched.step",
"model_3d_step_plain": "atsaml21g16b-aut.step",
"lbr": "atsaml21g16b-aut.lbr"
},
"distributor_links": {
"lcsc": "C2055060",
"digikey": "ATSAML21G16B-AUTTR-ND",
"mouser": "556-ATSAML21G16B-AUT"
},
"distributor_check": {
"checked_at": "2026-11-02T17:29:22Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAML21G16B-AUTTR-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATSAML21G16B-AUT",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 0, a backup pin in VSWOUT domain, also usable as EXTINT[0]/EXTWAKE[0] and XIN32 (32 kHz crystal input)."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 1, a backup pin in VSWOUT domain, also usable as EXTINT[1]/EXTWAKE[1] and XOUT32 (32 kHz crystal output)."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 2, supplied by VDDANA, also usable as EXTINT[2] and analog input AIN[0] or DAC output VOUT[0]."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 3, supplied by VDDANA, also usable as EXTINT[3]/EXTWAKE[3], analog reference VREFA and analog input AIN[1]."
},
{
"number": "5",
"name": "GNDANA",
"type": "power_in",
"description": "Ground for the analog power domain."
},
{
"number": "6",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply voltage, 1.6V to 3.6V, with decoupling of 100nF and 10µF and a ferrite bead to keep VDD noise out of VDDANA."
},
{
"number": "7",
"name": "PB08",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 8, supplied by VDDANA, also usable as EXTINT[8], analog input AIN[2] and SERCOM4 PAD[0]."
},
{
"number": "8",
"name": "PB09",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 9, supplied by VDDANA, also usable as EXTINT[9], analog input AIN[3] and SERCOM4 PAD[1]."
},
{
"number": "9",
"name": "PA04",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 4, supplied by VDDANA, also usable as EXTINT[4]/EXTWAKE[4], analog input AIN[4] and SERCOM0 PAD[0]."
},
{
"number": "10",
"name": "PA05",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 5, supplied by VDDANA, also usable as EXTINT[5]/EXTWAKE[5], analog input AIN[5] and SERCOM0 PAD[1]."
},
{
"number": "11",
"name": "PA06",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 6, supplied by VDDANA, also usable as EXTINT[6]/EXTWAKE[6], analog input AIN[6] and SERCOM0 PAD[2]."
},
{
"number": "12",
"name": "PA07",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 7, supplied by VDDANA, also usable as EXTINT[7]/EXTWAKE[7], analog input AIN[7] and SERCOM0 PAD[3]."
},
{
"number": "13",
"name": "PA08",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 8, a High Sink pin, also usable as NMI, SERCOM0/2 PAD[0] and I2C-capable pin."
},
{
"number": "14",
"name": "PA09",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 9, a High Sink pin, also usable as EXTINT[9], SERCOM0/2 PAD[1] and I2C-capable pin."
},
{
"number": "15",
"name": "PA10",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 10, supplied by VDDIO, also usable as EXTINT[10], SERCOM0/2 PAD[2] and GCLK_IO[4]."
},
{
"number": "16",
"name": "PA11",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 11, supplied by VDDIO, also usable as EXTINT[11], SERCOM0/2 PAD[3] and GCLK_IO[5]."
},
{
"number": "17",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply voltage, 1.6V to 3.6V, decoupled with 100nF and 10µF capacitors."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Digital ground for the I/O domain."
},
{
"number": "19",
"name": "PB10",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 10, supplied by VDDIO, also usable as EXTINT[10], PTC Y[2], SERCOM4 PAD[2] and GCLK_IO[4]."
},
{
"number": "20",
"name": "PB11",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 11, supplied by VDDIO, also usable as EXTINT[11], PTC Y[3], SERCOM4 PAD[3] and GCLK_IO[5]."
},
{
"number": "21",
"name": "PA12",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 12, supplied by VDDIO, also usable as EXTINT[12], SERCOM2/4 PAD[0], analog comparator output CMP[0] and I2C-capable pin."
},
{
"number": "22",
"name": "PA13",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 13, supplied by VDDIO, also usable as EXTINT[13], SERCOM2/4 PAD[1], analog comparator output CMP[1] and I2C-capable pin."
},
{
"number": "23",
"name": "PA14",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 14, supplied by VDDIO, also usable as EXTINT[14], SERCOM2/4 PAD[2], GCLK_IO[0] and XOSC crystal input XIN."
},
{
"number": "24",
"name": "PA15",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 15, supplied by VDDIO, also usable as EXTINT[15], SERCOM2/4 PAD[3], GCLK_IO[1] and XOSC crystal output XOUT."
},
{
"number": "25",
"name": "PA16",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 16, a High Sink pin, also usable as EXTINT[0], PTC X[4], SERCOM1/3 PAD[0] and I2C-capable pin."
},
{
"number": "26",
"name": "PA17",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 17, a High Sink pin, also usable as EXTINT[1], PTC X[5], SERCOM1/3 PAD[1] and I2C-capable pin."
},
{
"number": "27",
"name": "PA18",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 18, supplied by VDDIO, also usable as EXTINT[2], PTC X[6], SERCOM1/3 PAD[2] and analog comparator input CMP[0]."
},
{
"number": "28",
"name": "PA19",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 19, supplied by VDDIO, also usable as EXTINT[3], PTC X[7], SERCOM1/3 PAD[3] and analog comparator input CMP[1]."
},
{
"number": "29",
"name": "PA20",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 20, supplied by VDDIO, also usable as EXTINT[4], PTC X[8], SERCOM5/3 PAD[2] and GCLK_IO[4]."
},
{
"number": "30",
"name": "PA21",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 21, supplied by VDDIO, also usable as EXTINT[5], PTC X[9], SERCOM5/3 PAD[3] and GCLK_IO[5]."
},
{
"number": "31",
"name": "PA22",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 22, a High Sink pin, also usable as EXTINT[6], PTC X[10], SERCOM3/5 PAD[0] and I2C-capable pin."
},
{
"number": "32",
"name": "PA23",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 23, a High Sink pin, also usable as EXTINT[7], PTC X[11], SERCOM3/5 PAD[1], USB SOF 1kHz and I2C-capable pin."
},
{
"number": "33",
"name": "PA24",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 24, supplied by VDDIO, with a pull resistance of 50 to 150 kΩ, also usable as EXTINT[12], SERCOM3/5 PAD[2] and USB DM."
},
{
"number": "34",
"name": "PA25",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 25, supplied by VDDIO, with a pull resistance of 50 to 150 kΩ, also usable as EXTINT[13], SERCOM3/5 PAD[3] and USB DP."
},
{
"number": "35",
"name": "GND",
"type": "power_in",
"description": "Digital ground for the I/O domain."
},
{
"number": "36",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply voltage, 1.6V to 3.6V, decoupled with 100nF and 10µF capacitors."
},
{
"number": "37",
"name": "PB22",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 22, supplied by VDDIN, also usable as EXTINT[6], SERCOM5 PAD[2], TC3/WO[0] and GCLK_IO[0]."
},
{
"number": "38",
"name": "PB23",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 23, supplied by VDDIN, also usable as EXTINT[7], SERCOM5 PAD[3], TC3/WO[1] and GCLK_IO[1]."
},
{
"number": "39",
"name": "PA27",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 27, a High Sink pin, supplied by VDDIN, also usable as EXTINT[15] and GCLK_IO[0]."
},
{
"number": "40",
"name": "RESET",
"type": "input",
"description": "External reset input (RESETN), active low, with an internal pull-up resistor."
},
{
"number": "41",
"name": "VSW",
"type": "power_out",
"description": "On-chip switching regulator output, connected to VDDCORE through a 10 µH inductor in switching mode and not connected in linear mode."
},
{
"number": "42",
"name": "GND",
"type": "power_in",
"description": "Ground for the core and input supply domain."
},
{
"number": "43",
"name": "VDDCORE",
"type": "power_out",
"description": "Core supply voltage, 0.9V to 1.2V typical, decoupled with 100nF and 1µF; output in linear regulator mode and input from VSW in switched regulator mode."
},
{
"number": "44",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply voltage for the regulator and digital domain, 1.6V to 3.6V, decoupled with 100nF and 10µF capacitors."
},
{
"number": "45",
"name": "PA30",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 30, supplied by VDDIN, also usable as the SWCLK debug clock (SWD) and EXTINT[10]."
},
{
"number": "46",
"name": "PA31",
"type": "bidirectional",
"description": "Port A general-purpose I/O pin 31, a High Sink pin supplied by VDDIN, also usable as the SWDIO debug data pin (active with a debugger present) and EXTINT[11]."
},
{
"number": "47",
"name": "PB02",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 2, a backup pin in VSWOUT domain, also usable as EXTINT[2], AIN[10] and SUPC OUT[1]."
},
{
"number": "48",
"name": "PB03",
"type": "bidirectional",
"description": "Port B general-purpose I/O pin 3, a backup pin in VSWOUT domain, also usable as EXTINT[3], AIN[11] and the VBAT battery supply input."
}
],
"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 is printed without a label on the TQFP48 pinout page; PA21 appears only as an orphaned text l; The 7x7 body size from the package hint is not stated in the supplied pages; the package was identif"
],
"pages_sent": 119,
"cost_usd": 0.1521,
"at": "2026-11-02T17:29:07"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/41942ba97f76aad6042188ffe9080a2f.pdf",
"pages": 1158,
"sha256": "c7ade1efde79dc98",
"source_tier": "mfr"
},
"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"
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"seat": "z = 0",
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9,
9,
1.1
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",
"checked": "2026-11-02",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
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"role": "eda",
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"seat": "z = 0",
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"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "07c852424fbd9591fd8d610bfe154f37b21caac84211a6a5db1927ff819cc1ac",
"checked": "2026-11-02",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "TQFP-48(7x7)",
"Category": "Single Chip Microcomputer/Microcontroller",
"Pins": "48"
},
"appearance": {
"contacts": {
"quote": "indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In self-capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor.",
"page": 1034,
"doc": "ds.pdf",
"plating": "tin"
},
"version": 1,
"datasheet_sha256": "c7ade1efde79dc98f4121e9e7cb057088832817d557836433f1ef2ccb256cba1"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
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"info"
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"discovery_triggers": [
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],
"discovery_pitch": "ATSAML21G16B-AUT (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
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