component
ATSAMD21G17A-AU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "atsamd21g17a-au",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Pre-ordered MCUs, TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"atsamd21g17a-au",
"factory-2.0.0",
"extractor-text"
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"dependencies": {},
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"component": {
"mpn": "ATSAMD21G17A-AU",
"manufacturer": "Microchip Tech",
"package": "TQFP-48(7x7)",
"pin_count": 48,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/51472870820884317dbbd37b1846b65b.pdf",
"parts": {
"symbol": "atsamd21g17a-au.kicad_sym",
"footprint": "atsamd21g17a-au.kicad_mod",
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"model_3d_step_plain": "atsamd21g17a-au.step",
"lbr": "atsamd21g17a-au.lbr"
},
"distributor_links": {
"lcsc": "C1341489",
"digikey": "ATSAMD21G17A-AU-ND",
"mouser": "556-ATSAMD21G17A-AU"
},
"distributor_check": {
"checked_at": "2026-10-30T22:36:31Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAMD21G17A-AU-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATSAMD21G17A-AU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "Port A I/O pin 0 supplied from VDDANA, also EXTINT[0] and the XIN32 32 kHz crystal input per Table 7-3."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "Port A I/O pin 1 supplied from VDDANA, also EXTINT[1] and the XOUT32 32 kHz crystal output per Table 7-3."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "Port A I/O pin 2 supplied from VDDANA with analog functions (EXTINT[2], ADC AIN[0], PTC Y[0], DAC VOUT) on peripheral function B."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "Port A I/O pin 3 supplied from VDDANA with analog functions (EXTINT[3], ADC AIN[1] and VREFA, DAC VREFA, PTC Y[1]) on peripheral function B."
},
{
"number": "5",
"name": "GNDANA",
"type": "power_in",
"description": "Ground for the analog power domain (VDDANA)."
},
{
"number": "6",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply voltage; the SAM D21 operates from a single supply of 1.62 V to 3.63 V and VDDANA should be decoupled per the schematic checklist."
},
{
"number": "7",
"name": "PB08",
"type": "bidirectional",
"description": "Port B I/O pin 8 supplied from VDDANA, also EXTINT[8], ADC AIN[2], PTC Y[14], SERCOM4/PAD[0] and TC4/WO[0]."
},
{
"number": "8",
"name": "PB09",
"type": "bidirectional",
"description": "Port B I/O pin 9 supplied from VDDANA, also EXTINT[9], ADC AIN[3], PTC Y[15], SERCOM4/PAD[1] and TC4/WO[1]."
},
{
"number": "9",
"name": "PA04",
"type": "bidirectional",
"description": "Port A I/O pin 4 supplied from VDDANA, also EXTINT[4], ADC VREFB and AIN[4], PTC Y[2] and SERCOM0/PAD[0]."
},
{
"number": "10",
"name": "PA05",
"type": "bidirectional",
"description": "Port A I/O pin 5 supplied from VDDANA, also EXTINT[5], ADC AIN[5], PTC Y[3] and SERCOM0/PAD[1]."
},
{
"number": "11",
"name": "PA06",
"type": "bidirectional",
"description": "Port A I/O pin 6 supplied from VDDANA, also EXTINT[6], ADC AIN[6], PTC Y[4] and SERCOM0/PAD[2]."
},
{
"number": "12",
"name": "PA07",
"type": "bidirectional",
"description": "Port A I/O pin 7 supplied from VDDANA, also EXTINT[7], ADC AIN[7], PTC Y[5] and SERCOM0/PAD[3]."
},
{
"number": "13",
"name": "PA08",
"type": "bidirectional",
"description": "Port A I/O pin 8 supplied from VDDIO, also NMI, ADC AIN[16], PTC X[0], SERCOM0/PAD[0] and SERCOM2/PAD[0]; it supports SERCOM I2C High-speed mode."
},
{
"number": "14",
"name": "PA09",
"type": "bidirectional",
"description": "Port A I/O pin 9 supplied from VDDIO, also EXTINT[9], ADC AIN[17], PTC X[1], SERCOM0/PAD[1] and SERCOM2/PAD[1]; it supports SERCOM I2C High-speed mode."
},
{
"number": "15",
"name": "PA10",
"type": "bidirectional",
"description": "Port A I/O pin 10 supplied from VDDIO, also EXTINT[10], ADC AIN[18], PTC X[2], SERCOM0/PAD[2], SERCOM2/PAD[2] and TCC1/WO[0]."
},
{
"number": "16",
"name": "PA11",
"type": "bidirectional",
"description": "Port A I/O pin 11 supplied from VDDIO, also EXTINT[11], ADC AIN[19], PTC X[3], SERCOM0/PAD[3], SERCOM2/PAD[3] and TCC1/WO[1]."
},
{
"number": "17",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply voltage of 1.62 V to 3.63 V, to be decoupled with 100 nF and 10 µF capacitors per the schematic checklist."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Digital ground for the VDDIO domain."
},
{
"number": "19",
"name": "PB10",
"type": "bidirectional",
"description": "Port B I/O pin 10 supplied from VDDIO, also EXTINT[10], SERCOM4/PAD[2], TC5/WO[0], TCC0/WO[4] and I2S MCK[1]."
},
{
"number": "20",
"name": "PB11",
"type": "bidirectional",
"description": "Port B I/O pin 11 supplied from VDDIO, also EXTINT[11], SERCOM4/PAD[3], TC5/WO[1], TCC0/WO[5] and I2S SCK[1]."
},
{
"number": "21",
"name": "PA12",
"type": "bidirectional",
"description": "Port A I/O pin 12 supplied from VDDIO, also EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0], AC/CMP[0] and TCC0/WO[6]; it supports SERCOM I2C High-speed mode."
},
{
"number": "22",
"name": "PA13",
"type": "bidirectional",
"description": "Port A I/O pin 13 supplied from VDDIO, also EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1], AC/CMP[1] and TCC0/WO[7]; it supports SERCOM I2C High-speed mode."
},
{
"number": "23",
"name": "PA14",
"type": "bidirectional",
"description": "Port A I/O pin 14 supplied from VDDIO, also EXTINT[14], the XIN crystal input per Table 7-3, SERCOM2/PAD[2], SERCOM4/PAD[2], TC3/WO[0] and GCLK_IO[0]."
},
{
"number": "24",
"name": "PA15",
"type": "bidirectional",
"description": "Port A I/O pin 15 supplied from VDDIO, also EXTINT[15], the XOUT crystal output per Table 7-3, SERCOM2/PAD[3], SERCOM4/PAD[3], TC3/WO[1] and GCLK_IO[1]."
},
{
"number": "25",
"name": "PA16",
"type": "bidirectional",
"description": "Port A I/O pin 16 supplied from VDDIO, also EXTINT[0], PTC X[4], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0] and GCLK_IO[2]; it supports SERCOM I2C High-speed mode."
},
{
"number": "26",
"name": "PA17",
"type": "bidirectional",
"description": "Port A I/O pin 17 supplied from VDDIO, also EXTINT[1], PTC X[5], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1] and GCLK_IO[3]; it supports SERCOM I2C High-speed mode."
},
{
"number": "27",
"name": "PA18",
"type": "bidirectional",
"description": "Port A I/O pin 18 supplied from VDDIO, also EXTINT[2], PTC X[6], SERCOM1/PAD[2], SERCOM3/PAD[2], TC3/WO[0] and AC/CMP[0]."
},
{
"number": "28",
"name": "PA19",
"type": "bidirectional",
"description": "Port A I/O pin 19 supplied from VDDIO, also EXTINT[3], PTC X[7], SERCOM1/PAD[3], SERCOM3/PAD[3], TC3/WO[1] and AC/CMP[1]."
},
{
"number": "29",
"name": "PA20",
"type": "bidirectional",
"description": "Port A I/O pin 20 supplied from VDDIO, also EXTINT[4], PTC X[8], SERCOM5/PAD[2], SERCOM3/PAD[2], TCC0/WO[6] and GCLK_IO[4]."
},
{
"number": "30",
"name": "PA21",
"type": "bidirectional",
"description": "Port A I/O pin 21 supplied from VDDIO, also EXTINT[5], PTC X[9], SERCOM5/PAD[3], SERCOM3/PAD[3], TCC0/WO[7] and GCLK_IO[5]."
},
{
"number": "31",
"name": "PA22",
"type": "bidirectional",
"description": "Port A I/O pin 22 supplied from VDDIO, also EXTINT[6], PTC X[10], SERCOM3/PAD[0], SERCOM5/PAD[0], TC4/WO[0], TCC0/WO[4] and GCLK_IO[6]; it supports SERCOM I2C High-speed mode."
},
{
"number": "32",
"name": "PA23",
"type": "bidirectional",
"description": "Port A I/O pin 23 supplied from VDDIO, also EXTINT[7], PTC X[11], SERCOM3/PAD[1], SERCOM5/PAD[1], TC4/WO[1], TCC0/WO[5], USB SOF 1kHz and GCLK_IO[7]; it supports SERCOM I2C High-speed mode."
},
{
"number": "33",
"name": "PA24",
"type": "bidirectional",
"description": "Port A I/O pin 24 supplied from VDDIO, used as USB DM, also EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2] and TC5/WO[0]; it has no drive strength option and a pull-up through input GPIO mode is recommended if the pin is unconnected (footnote 6)."
},
{
"number": "34",
"name": "PA25",
"type": "bidirectional",
"description": "Port A I/O pin 25 supplied from VDDIO, used as USB DP, also EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3] and TC5/WO[1]; it has no drive strength option and a pull-up through input GPIO mode is recommended if the pin is unconnected (footnote 6)."
},
{
"number": "35",
"name": "GND",
"type": "power_in",
"description": "Digital ground for the VDDIO domain."
},
{
"number": "36",
"name": "VDDIO",
"type": "power_in",
"description": "Digital I/O supply voltage of 1.62 V to 3.63 V, to be decoupled per the schematic checklist."
},
{
"number": "37",
"name": "PB22",
"type": "bidirectional",
"description": "Port B I/O pin 22 supplied from VDDIO, also EXTINT[6], SERCOM5/PAD[2], TCC3/WO[0] and GCLK_IO[0]."
},
{
"number": "38",
"name": "PB23",
"type": "bidirectional",
"description": "Port B I/O pin 23 supplied from VDDIO, also EXTINT[7], SERCOM5/PAD[3], TCC3/WO[1] and GCLK_IO[1]."
},
{
"number": "39",
"name": "PA27",
"type": "bidirectional",
"description": "Port A I/O pin 27 supplied from VDDIO, also EXTINT[15], TCC3/WO[6] and GCLK_IO[0]."
},
{
"number": "40",
"name": "RESET",
"type": "input",
"description": "External active-low reset input with an internal pull-up; it must be pulled below 0.33 × VDDIO at 1.6 V to 2.0 V VDDIO or below 0.36 × VDDIO at 2.7 V to 3.6 V VDDIO."
},
{
"number": "41",
"name": "PA28",
"type": "bidirectional",
"description": "Port A I/O pin 28 supplied from VDDIO, also EXTINT[8], TCC3/WO[7] and GCLK_IO[0]."
},
{
"number": "42",
"name": "GND",
"type": "power_in",
"description": "Digital ground for the VDDIO domain."
},
{
"number": "43",
"name": "VDDCORE",
"type": "power_out",
"description": "Regulated core supply output of 1.6 V to 1.8 V, requiring a 1 µF decoupling capacitor close to the pin."
},
{
"number": "44",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply for the internal voltage regulator, operating within the single 1.62 V to 3.63 V supply range."
},
{
"number": "45",
"name": "PA30",
"type": "bidirectional",
"description": "Port A I/O pin 30 supplied from VDDIO, also EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], TCC3/WO[4], GCLK_IO[0] and SWCLK (debug interface, mapped per Table 7-4)."
},
{
"number": "46",
"name": "PA31",
"type": "bidirectional",
"description": "Port A I/O pin 31 supplied from VDDIO, also EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1], TCC3/WO[5] and SWDIO, which is only activated when a debugger is present."
},
{
"number": "47",
"name": "PB02",
"type": "bidirectional",
"description": "Port B I/O pin 2 supplied from VDDANA, also EXTINT[2], ADC AIN[10], PTC Y[8], SERCOM5/PAD[0] and TCC3/WO[2]; TC6 is not available on SAM D21 G devices."
},
{
"number": "48",
"name": "PB03",
"type": "bidirectional",
"description": "Port B I/O pin 3 supplied from VDDANA, also EXTINT[3], ADC AIN[11], PTC Y[9], SERCOM5/PAD[1] and TCC3/WO[3]; TC6 is not available on SAM D21 G devices."
}
],
"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 text gives the 48-pin TQFP package but does not state the 7x7 mm body size in the prov; The pinout figure on page 22 is not legible as text. Pin numbers and names come from the page 22 lis; Pin 30 is blank in the page 22 text extraction. It is recovered as PA21 from the 48-pin column of Ta"
],
"pages_sent": 121,
"cost_usd": 0.6084,
"at": "2026-10-30T22:36:09"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/51472870820884317dbbd37b1846b65b.pdf",
"pages": 1115,
"sha256": "c6d97462f2439487",
"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": "atsamd21g17a-au.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9.0,
9.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsamd21g17a-au-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9.0,
9.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "e7fdc0f478d534124c5f85b9e1886e64dd0931fcd159d83ba595a8db6bbf13bc",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}