component
ATSAML21G17B-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": "atsaml21g17b-aut",
"title": "ATSAML21G17B-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",
"embedded processors & controllers",
"atsaml21g17b-aut",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATSAML21G17B-AUT",
"manufacturer": "Microchip Tech",
"package": "TQFP-48(7x7)",
"pin_count": 48,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/41942ba97f76aad6042188ffe9080a2f.pdf",
"parts": {
"symbol": "atsaml21g17b-aut.kicad_sym",
"footprint": "atsaml21g17b-aut.kicad_mod",
"model_3d": "atsaml21g17b-aut-hero.glb",
"model_3d_plain": "atsaml21g17b-aut-etched.glb",
"model_3d_step": "atsaml21g17b-aut-etched.step",
"model_3d_step_plain": "atsaml21g17b-aut.step",
"lbr": "atsaml21g17b-aut.lbr"
},
"distributor_links": {
"lcsc": "C2053354",
"digikey": "ATSAML21G17B-AUTTR-ND",
"mouser": "556-ATSAML21G17B-AUT"
},
"distributor_check": {
"checked_at": "2026-10-30T23:24:17Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAML21G17B-AUTTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATSAML21G17B-AUT",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "Port A GPIO pin PA00, a Backup pin powered from VSWOUT; it can also serve as XIN32 (32 kHz crystal input), EXTINT[0]/EXTWAKE[0] and SERCOM1 PAD[0]."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "Port A GPIO pin PA01, a Backup pin powered from VSWOUT; it can also serve as XOUT32 (32 kHz crystal output), EXTINT[1]/EXTWAKE[1] and SERCOM1 PAD[1]."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "Port A GPIO pin PA02, powered from VDDANA; alternate analog functions include AIN[0], Y[0], VOUT[0] and OA_NEG[0], and it is a static neighbour pin for XOSC32K jitter minimization."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "Port A GPIO pin PA03, powered from VDDANA; alternate analog functions include VREFA, AIN[1] and Y[1], and it is a static neighbour pin for XOSC32K jitter minimization."
},
{
"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, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors and recommended to be filtered from VDD with a ferrite bead."
},
{
"number": "7",
"name": "PB08",
"type": "bidirectional",
"description": "Port B GPIO pin PB08, powered from VDDANA; alternate functions include AIN[2], OA_OUT[1], SERCOM4 PAD[0] and TC0/WO[0]."
},
{
"number": "8",
"name": "PB09",
"type": "bidirectional",
"description": "Port B GPIO pin PB09, powered from VDDANA; alternate functions include AIN[3], Y[15], OA_POS[1], SERCOM4 PAD[1] and TC0/WO[1]."
},
{
"number": "9",
"name": "PA04",
"type": "bidirectional",
"description": "Port A GPIO pin PA04, powered from VDDANA; alternate functions include VREFB, AIN[4], AIN[0], OA_OUT[2], SERCOM0 PAD[0] and TCC0/WO[0]."
},
{
"number": "10",
"name": "PA05",
"type": "bidirectional",
"description": "Port A GPIO pin PA05, powered from VDDANA; alternate functions include AIN[5], AIN[1], VOUT[1], OA_POS[2], SERCOM0 PAD[1] and TCC0/WO[1]."
},
{
"number": "11",
"name": "PA06",
"type": "bidirectional",
"description": "Port A GPIO pin PA06, powered from VDDANA; alternate functions include AIN[6], AIN[2], Y[4], OA_POS[0], SERCOM0 PAD[2] and TCC1/WO[0]."
},
{
"number": "12",
"name": "PA07",
"type": "bidirectional",
"description": "Port A GPIO pin PA07, powered from VDDANA; alternate functions include AIN[7], AIN[3], OA_OUT[0], SERCOM0 PAD[3] and TCC1/WO[1]."
},
{
"number": "13",
"name": "PA08",
"type": "bidirectional",
"description": "Port A GPIO pin PA08, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including NMI, AIN[16], X[0], Y[6] and TCC0/WO[0]."
},
{
"number": "14",
"name": "PA09",
"type": "bidirectional",
"description": "Port A GPIO pin PA09, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[9], AIN[17], X[1], Y[7] and TCC0/WO[1]."
},
{
"number": "15",
"name": "PA10",
"type": "bidirectional",
"description": "Port A GPIO pin PA10, powered from VDDIO; alternate functions include EXTINT[10], AIN[18], X[2], Y[8], SERCOM0 PAD[2] and GCLK_IO[4]."
},
{
"number": "16",
"name": "PA11",
"type": "bidirectional",
"description": "Port A GPIO pin PA11, powered from VDDIO; alternate functions include EXTINT[11], AIN[19], X[3], Y[9], SERCOM0 PAD[3] and GCLK_IO[5]."
},
{
"number": "17",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply voltage, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "19",
"name": "PB10",
"type": "bidirectional",
"description": "Port B GPIO pin PB10, powered from VDDIO; alternate functions include EXTINT[10], Y[2], SERCOM4 PAD[2], TC1/WO[0] and GCLK_IO[4]."
},
{
"number": "20",
"name": "PB11",
"type": "bidirectional",
"description": "Port B GPIO pin PB11, powered from VDDIO; alternate functions include EXTINT[11], Y[3], SERCOM4 PAD[3], TC1/WO[1] and GCLK_IO[5]."
},
{
"number": "21",
"name": "PA12",
"type": "bidirectional",
"description": "Port A GPIO pin PA12, powered from VDDIO; alternate functions include EXTINT[12], SERCOM2 PAD[0], SERCOM4 PAD[0], TCC2/WO[0] and AC/CMP[0], and it supports SERCOM I2C with output low-level current limited to 2.5 mA in Sm/Fm mode at VOL = 0.4 V."
},
{
"number": "22",
"name": "PA13",
"type": "bidirectional",
"description": "Port A GPIO pin PA13, powered from VDDIO; alternate functions include EXTINT[13], SERCOM2 PAD[1], SERCOM4 PAD[1], TCC2/WO[1] and AC/CMP[1], and it supports SERCOM I2C with output low-level current limited to 2.5 mA in Sm/Fm mode at VOL = 0.4 V."
},
{
"number": "23",
"name": "PA14",
"type": "bidirectional",
"description": "Port A GPIO pin PA14, powered from VDDIO; it can serve as XIN (external crystal or clock input for the main oscillator) and also as EXTINT[14], SERCOM2 PAD[2], SERCOM4 PAD[2], TC4/WO[0] and GCLK_IO[0]."
},
{
"number": "24",
"name": "PA15",
"type": "bidirectional",
"description": "Port A GPIO pin PA15, powered from VDDIO; it can serve as XOUT (crystal output of the main oscillator) and also as EXTINT[15], SERCOM2 PAD[3], SERCOM4 PAD[3], TC4/WO[1] and GCLK_IO[1]."
},
{
"number": "25",
"name": "PA16",
"type": "bidirectional",
"description": "Port A GPIO pin PA16, powered from VDDIO; alternate functions include EXTINT[0], X[4], SERCOM1 PAD[0], SERCOM3 PAD[0], TCC2/WO[0] and GCLK_IO[2], and it supports SERCOM I2C."
},
{
"number": "26",
"name": "PA17",
"type": "bidirectional",
"description": "Port A GPIO pin PA17, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[1], X[5], SERCOM1 PAD[1], SERCOM3 PAD[1] and GCLK_IO[3]."
},
{
"number": "27",
"name": "PA18",
"type": "bidirectional",
"description": "Port A GPIO pin PA18, powered from VDDIO; alternate functions include EXTINT[2], X[6], SERCOM1 PAD[2], SERCOM3 PAD[2], TC4/WO[0] and AC/CMP[0]."
},
{
"number": "28",
"name": "PA19",
"type": "bidirectional",
"description": "Port A GPIO pin PA19, powered from VDDIO; alternate functions include EXTINT[3], X[7], SERCOM1 PAD[3], SERCOM3 PAD[3], TC4/WO[1] and AC/CMP[1]."
},
{
"number": "29",
"name": "PA20",
"type": "bidirectional",
"description": "Port A GPIO pin PA20, powered from VDDIO; alternate functions include EXTINT[4], X[8], SERCOM5 PAD[2], SERCOM3 PAD[2], TC3/WO[0] and GCLK_IO[4]."
},
{
"number": "30",
"name": "PA21",
"type": "bidirectional",
"description": "Port A GPIO pin PA21, powered from VDDIO; alternate functions include EXTINT[5], X[9], SERCOM5 PAD[3], SERCOM3 PAD[3], TC3/WO[1] and GCLK_IO[5]."
},
{
"number": "31",
"name": "PA22",
"type": "bidirectional",
"description": "Port A GPIO pin PA22, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[6], X[10], SERCOM3 PAD[0], SERCOM5 PAD[0] and TC0/WO[0]."
},
{
"number": "32",
"name": "PA23",
"type": "bidirectional",
"description": "Port A GPIO pin PA23, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[7], X[11], SERCOM3 PAD[1], SERCOM5 PAD[1], USB SOF 1 kHz and GCLK_IO[7]."
},
{
"number": "33",
"name": "PA24",
"type": "bidirectional",
"description": "Port A GPIO pin PA24, powered from VDDIO; alternate functions include EXTINT[12], SERCOM3 PAD[2], SERCOM5 PAD[2], TC1/WO[0], TCC1/WO[2] and USB DM; its internal pull resistor is 50 to 150 kΩ."
},
{
"number": "34",
"name": "PA25",
"type": "bidirectional",
"description": "Port A GPIO pin PA25, powered from VDDIO; alternate functions include EXTINT[13], SERCOM3 PAD[3], SERCOM5 PAD[3], TC1/WO[1], TCC1/WO[3] and USB DP; its internal pull resistor is 50 to 150 kΩ."
},
{
"number": "35",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "36",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply voltage, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors."
},
{
"number": "37",
"name": "PB22",
"type": "bidirectional",
"description": "Port B GPIO pin PB22, powered from VDDIN; alternate functions include EXTINT[6], SERCOM5 PAD[2], TC3/WO[0], GCLK_IO[0] and CCL0 IN[0]."
},
{
"number": "38",
"name": "PB23",
"type": "bidirectional",
"description": "Port B GPIO pin PB23, powered from VDDIN; alternate functions include EXTINT[7], SERCOM5 PAD[3], TC3/WO[1], GCLK_IO[1] and CCL0 OUT."
},
{
"number": "39",
"name": "PA27",
"type": "bidirectional",
"description": "Port A GPIO pin PA27, powered from VDDIN; it is a High Sink pin with alternate functions including EXTINT[15] and GCLK_IO[0]."
},
{
"number": "40",
"name": "RESET",
"type": "input",
"description": "External reset input (active low) with an internal pull-up resistor; the low-level threshold is below 0.33×VDDIO for VDDIO 1.6-2.0 V and below 0.36×VDDIO for VDDIO 2.7-3.6 V."
},
{
"number": "41",
"name": "VSW",
"type": "power_out",
"description": "On-chip switching-mode regulator output, connected to VDDCORE through a 10 µH inductor with saturation current above 150 mA and DCR below 1 Ω; not connected in linear regulator mode."
},
{
"number": "42",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "43",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply, 0.9 V to 1.2 V typical; it is the core voltage output with a 1 µF decoupling capacitor in linear regulator mode, and the core supply input connected to VSW through the inductor in switched regulator mode."
},
{
"number": "44",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply for the regulator and the VDDIN-powered I/O domain, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors."
},
{
"number": "45",
"name": "PA30",
"type": "bidirectional",
"description": "Port A GPIO pin PA30, powered from VDDIN; it carries the SWCLK debug clock input (active when the debugger is connected, with a 1 kΩ pull-up recommended) and also EXTINT[10], SERCOM1 PAD[2], TCC1/WO[0] and GCLK_IO[0]."
},
{
"number": "46",
"name": "PA31",
"type": "bidirectional",
"description": "Port A GPIO pin PA31, powered from VDDIN; it carries the SWDIO debug data pin (activated when a debugger is present) and is a High Sink pin with alternate functions including EXTINT[11], SERCOM1 PAD[3] and TCC1/WO[1]."
},
{
"number": "47",
"name": "PB02",
"type": "bidirectional",
"description": "Port B GPIO pin PB02, a Backup pin powered from VSWOUT; alternate functions include EXTINT[2], AIN[10], SERCOM5 PAD[0], TC2/WO[0] and CCL0 OUT, and it is the SUPC OUT[1] function."
},
{
"number": "48",
"name": "PB03",
"type": "bidirectional",
"description": "Port B GPIO pin PB03, a Backup pin powered from VSWOUT; alternate functions include EXTINT[3], AIN[11], SERCOM5 PAD[1] and TC2/WO[1], and it is the VBAT (external battery supply) input when used by the Supply Controller."
}
],
"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: In the page 24 text the pin 30 label is blank (the name appears only as a stray 'PA21' at the top of; VSW and VDDCORE direction depends on the regulator mode: VSW is a regulator output in switched mode,; PB03 is also the VBAT input and PB02 is the SUPC OUT[1] function (Table 7-5, page 31). Both are list"
],
"pages_sent": 119,
"cost_usd": 0.6186,
"at": "2026-10-30T23:24:06"
},
"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"
},
"models_3d": [
{
"file": "atsaml21g17b-aut.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": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsaml21g17b-aut-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
1.1
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "30e0415933210a9cc80fdaafeee2741b49233668a7e47e48535bb82fda14d524",
"checked": "2026-10-30",
"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"
},
"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"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "c7ade1efde79dc98f4121e9e7cb057088832817d557836433f1ef2ccb256cba1",
"rows": [
{
"name": "Operating temperature range (ordering code -AUT, TQFP48)",
"symbol": "",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "Ordering code ATSAML21G17B-AUT (Tape & Reel), -40°C to 85°C grade",
"source_page": 17,
"source": "datasheet"
},
{
"name": "Supply voltage range (main supply / IOs supply, power supply connection figures)",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 1.62,
"typ": null,
"max": 3.63,
"conditions": "Figure 9-1 power supply connection (linear mode); same range annotated in Figures 9-2 and 9-3 on pages 38-39",
"source_page": 38,
"source": "datasheet"
},
{
"name": "Maximum CPU frequency",
"symbol": "fCPU",
"kind": "recommended_operating",
"unit": "MHz",
"min": null,
"typ": null,
"max": 48,
"conditions": "Configuration summary for SAM L21 family (G variant listed); no separate condition printed",
"source_page": 16,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"atsaml21g17b-aut"
],
"discovery_pitch": "ATSAML21G17B-AUT (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"docs/hero.png",
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"viewers/symbol.html",
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}
}