component
ATSAMD21J17D-MU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, QFN-64-EP(9x9). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "atsamd21j17d-mu",
"title": "ATSAMD21J17D-MU",
"brief": "Microchip Tech Pre-ordered MCUs, QFN-64-EP(9x9). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"embedded processors & controllers",
"atsamd21j17d-mu",
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"component": {
"mpn": "ATSAMD21J17D-MU",
"manufacturer": "Microchip Tech",
"package": "QFN-64-EP(9x9)",
"pin_count": 65,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d70e0a926271e38a2611b8b6dcc19c07.pdf",
"parts": {
"symbol": "atsamd21j17d-mu.kicad_sym",
"footprint": "atsamd21j17d-mu.kicad_mod",
"model_3d": "atsamd21j17d-mu-hero.glb",
"model_3d_plain": "atsamd21j17d-mu-etched.glb",
"model_3d_step": "atsamd21j17d-mu-etched.step",
"model_3d_step_plain": "atsamd21j17d-mu.step",
"lbr": "atsamd21j17d-mu.lbr"
},
"distributor_links": {
"lcsc": "C614639",
"digikey": "ATSAMD21J17D-MU-ND",
"mouser": "556-ATSAMD21J17D-MU"
},
"distributor_check": {
"checked_at": "2026-11-02T16:55:56Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAMD21J17D-MU-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATSAMD21J17D-MU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "Port A pin PA00 on the VDDANA supply domain; it is the XIN32 32 kHz crystal input when XOSC32K is used (Table 7-3)."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "Port A pin PA01 on the VDDANA supply domain; it is the XOUT32 32 kHz crystal output when XOSC32K is used (Table 7-3)."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "Port A pin PA02 on the VDDANA supply domain, with analog input AIN[0] and DAC output VOUT on peripheral function B (Table 7-1)."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "Port A pin PA03 on the VDDANA supply domain, with analog input AIN[1] and ADC/DAC voltage reference VREFA on peripheral function B (Table 7-1)."
},
{
"number": "5",
"name": "PB04",
"type": "bidirectional",
"description": "Port B pin PB04 on the VDDANA supply domain, with analog input AIN[12] on peripheral function B (Table 7-1)."
},
{
"number": "6",
"name": "PB05",
"type": "bidirectional",
"description": "Port B pin PB05 on the VDDANA supply domain, with analog input AIN[13] on peripheral function B (Table 7-1)."
},
{
"number": "7",
"name": "GNDANA",
"type": "power_in",
"description": "Ground for the analog domain, paired with VDDANA pin 8."
},
{
"number": "8",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply for the analog peripherals, paired with GNDANA pin 7."
},
{
"number": "9",
"name": "PB06",
"type": "bidirectional",
"description": "Port B pin PB06 on the VDDANA supply domain, with analog input AIN[14] on peripheral function B (Table 7-1)."
},
{
"number": "10",
"name": "PB07",
"type": "bidirectional",
"description": "Port B pin PB07 on the VDDANA supply domain, with analog input AIN[15] on peripheral function B (Table 7-1)."
},
{
"number": "11",
"name": "PB08",
"type": "bidirectional",
"description": "Port B pin PB08 on the VDDANA supply domain, with analog input AIN[2] on peripheral function B (Table 7-1)."
},
{
"number": "12",
"name": "PB09",
"type": "bidirectional",
"description": "Port B pin PB09 on the VDDANA supply domain, with analog input AIN[3] on peripheral function B (Table 7-1)."
},
{
"number": "13",
"name": "PA04",
"type": "bidirectional",
"description": "Port A pin PA04 on the VDDANA supply domain, with analog input AIN[4] and ADC voltage reference VREFB on peripheral function B (Table 7-1)."
},
{
"number": "14",
"name": "PA05",
"type": "bidirectional",
"description": "Port A pin PA05 on the VDDANA supply domain, with analog input AIN[5] on peripheral function B (Table 7-1)."
},
{
"number": "15",
"name": "PA06",
"type": "bidirectional",
"description": "Port A pin PA06 on the VDDANA supply domain, with analog input AIN[6] on peripheral function B (Table 7-1)."
},
{
"number": "16",
"name": "PA07",
"type": "bidirectional",
"description": "Port A pin PA07 on the VDDANA supply domain, with analog input AIN[7] on peripheral function B (Table 7-1)."
},
{
"number": "17",
"name": "PA08",
"type": "bidirectional",
"description": "Port A pin PA08 on the VDDIO supply domain, with NMI and analog input AIN[16] on peripheral function B (Table 7-1)."
},
{
"number": "18",
"name": "PA09",
"type": "bidirectional",
"description": "Port A pin PA09 on the VDDIO supply domain, with analog input AIN[17] on peripheral function B (Table 7-1)."
},
{
"number": "19",
"name": "PA10",
"type": "bidirectional",
"description": "Port A pin PA10 on the VDDIO supply domain, with analog input AIN[18] on peripheral function B (Table 7-1)."
},
{
"number": "20",
"name": "PA11",
"type": "bidirectional",
"description": "Port A pin PA11 on the VDDIO supply domain, with analog input AIN[19] on peripheral function B (Table 7-1)."
},
{
"number": "21",
"name": "VDDIO",
"type": "power_in",
"description": "Supply for the digital I/O pins of this I/O bank, paired with GND pin 22."
},
{
"number": "22",
"name": "GND",
"type": "power_in",
"description": "Digital ground paired with VDDIO pin 21."
},
{
"number": "23",
"name": "PB10",
"type": "bidirectional",
"description": "Port B pin PB10 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "24",
"name": "PB11",
"type": "bidirectional",
"description": "Port B pin PB11 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "25",
"name": "PB12",
"type": "bidirectional",
"description": "Port B pin PB12 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "26",
"name": "PB13",
"type": "bidirectional",
"description": "Port B pin PB13 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "27",
"name": "PB14",
"type": "bidirectional",
"description": "Port B pin PB14 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "28",
"name": "PB15",
"type": "bidirectional",
"description": "Port B pin PB15 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "29",
"name": "PA12",
"type": "bidirectional",
"description": "Port A pin PA12 on the VDDIO supply domain, with analog comparator output AC/CMP[0] on peripheral function H (Table 7-1)."
},
{
"number": "30",
"name": "PA13",
"type": "bidirectional",
"description": "Port A pin PA13 on the VDDIO supply domain, with analog comparator output AC/CMP[1] on peripheral function H (Table 7-1)."
},
{
"number": "31",
"name": "PA14",
"type": "bidirectional",
"description": "Port A pin PA14 on the VDDIO supply domain; it is the XIN crystal input when XOSC is used (Table 7-3)."
},
{
"number": "32",
"name": "PA15",
"type": "bidirectional",
"description": "Port A pin PA15 on the VDDIO supply domain; it is the XOUT crystal output when XOSC is used (Table 7-3)."
},
{
"number": "33",
"name": "GND",
"type": "power_in",
"description": "Digital ground paired with VDDIO pin 34."
},
{
"number": "34",
"name": "VDDIO",
"type": "power_in",
"description": "Supply for the digital I/O pins of this I/O bank, paired with GND pin 33."
},
{
"number": "35",
"name": "PA16",
"type": "bidirectional",
"description": "Port A pin PA16 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "36",
"name": "PA17",
"type": "bidirectional",
"description": "Port A pin PA17 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "37",
"name": "PA18",
"type": "bidirectional",
"description": "Port A pin PA18 on the VDDIO supply domain, with analog comparator output AC/CMP[0] on peripheral function H (Table 7-1)."
},
{
"number": "38",
"name": "PA19",
"type": "bidirectional",
"description": "Port A pin PA19 on the VDDIO supply domain, with analog comparator output AC/CMP[1] on peripheral function H (Table 7-1)."
},
{
"number": "39",
"name": "PB16",
"type": "bidirectional",
"description": "Port B pin PB16 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "40",
"name": "PB17",
"type": "bidirectional",
"description": "Port B pin PB17 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "41",
"name": "PA20",
"type": "bidirectional",
"description": "Port A pin PA20 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "42",
"name": "PA21",
"type": "bidirectional",
"description": "Port A pin PA21 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "43",
"name": "PA22",
"type": "bidirectional",
"description": "Port A pin PA22 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "44",
"name": "PA23",
"type": "bidirectional",
"description": "Port A pin PA23 on the VDDIO supply domain, with USB SOF 1kHz output on peripheral function H (Table 7-1)."
},
{
"number": "45",
"name": "PA24",
"type": "bidirectional",
"description": "Port A pin PA24 on the VDDIO supply domain, used as USB DM; if unconnected, a pull-up is recommended (Table 7-1 note 6)."
},
{
"number": "46",
"name": "PA25",
"type": "bidirectional",
"description": "Port A pin PA25 on the VDDIO supply domain, used as USB DP; if unconnected, a pull-up is recommended (Table 7-1 note 6)."
},
{
"number": "47",
"name": "GND",
"type": "power_in",
"description": "Digital ground paired with VDDIO pin 48."
},
{
"number": "48",
"name": "VDDIO",
"type": "power_in",
"description": "Supply for the digital I/O pins of this I/O bank, paired with GND pin 47."
},
{
"number": "49",
"name": "PB22",
"type": "bidirectional",
"description": "Port B pin PB22 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "50",
"name": "PB23",
"type": "bidirectional",
"description": "Port B pin PB23 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "51",
"name": "PA27",
"type": "bidirectional",
"description": "Port A pin PA27 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "52",
"name": "RESET",
"type": "input",
"description": "External active-low reset input for the device."
},
{
"number": "53",
"name": "PA28",
"type": "bidirectional",
"description": "Port A pin PA28 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "54",
"name": "GND",
"type": "power_in",
"description": "Digital ground paired with VDDIN pin 56."
},
{
"number": "55",
"name": "VDDCORE",
"type": "power_out",
"description": "Regulated output supply of the internal voltage regulator for the core."
},
{
"number": "56",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply for the device and internal voltage regulator, paired with GND pin 54."
},
{
"number": "57",
"name": "PA30",
"type": "bidirectional",
"description": "Port A pin PA30 on the VDDIO supply domain; it is the SWCLK Serial Wire Debug clock (Table 7-4)."
},
{
"number": "58",
"name": "PA31",
"type": "bidirectional",
"description": "Port A pin PA31 on the VDDIO supply domain; it is the SWDIO Serial Wire Debug data pin (Table 7-4)."
},
{
"number": "59",
"name": "PB30",
"type": "bidirectional",
"description": "Port B pin PB30 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "60",
"name": "PB31",
"type": "bidirectional",
"description": "Port B pin PB31 on the VDDIO supply domain, with peripheral multiplexing per Table 7-1."
},
{
"number": "61",
"name": "PB00",
"type": "bidirectional",
"description": "Port B pin PB00 on the VDDANA supply domain, with analog input AIN[8] on peripheral function B (Table 7-1)."
},
{
"number": "62",
"name": "PB01",
"type": "bidirectional",
"description": "Port B pin PB01 on the VDDANA supply domain, with analog input AIN[9] on peripheral function B (Table 7-1)."
},
{
"number": "63",
"name": "PB02",
"type": "bidirectional",
"description": "Port B pin PB02 on the VDDANA supply domain, with analog input AIN[10] on peripheral function B (Table 7-1)."
},
{
"number": "64",
"name": "PB03",
"type": "bidirectional",
"description": "Port B pin PB03 on the VDDANA supply domain, with analog input AIN[11] on peripheral function B (Table 7-1)."
},
{
"number": "65",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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 QFN64 9x9 exposed thermal pad (EP) is not listed as a numbered pin in the pinout table, so it is; The pinout on page 19 is one drawing shared by the QFN64 and TQFP64 packages. Pin numbers are taken "
],
"pages_sent": 118,
"cost_usd": 0.1607,
"at": "2026-11-02T16:55:44"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/d70e0a926271e38a2611b8b6dcc19c07.pdf",
"pages": 1148,
"sha256": "18ca1ccab5aa330f",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 65,
"described": 65,
"cites_pages": true,
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"metadata": {
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"Manufacturer": "Microchip Tech",
"Package": "QFN-64-EP(9x9)",
"Category": "Embedded Processors & Controllers",
"Pins": "65"
},
"appearance": {
"contacts": {
"quote": "including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In the self-capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor.",
"page": 859,
"doc": "ds.pdf",
"plating": "tin"
},
"version": 1,
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"rows": [
{
"name": "VDDIO supply voltage",
"symbol": "VDDIO",
"kind": "recommended_operating",
"unit": "V",
"min": 1.62,
"typ": null,
"max": 3.63,
"conditions": "Voltage range as stated in section 8.2.1 (VDDIO powers I/O lines, OSC8M and XOSC)",
"source_page": 35,
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{
"name": "VDDIN supply voltage",
"symbol": "VDDIN",
"kind": "recommended_operating",
"unit": "V",
"min": 1.62,
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"conditions": "Voltage range as stated in section 8.2.1 (VDDIN powers I/O lines and internal regulator)",
"source_page": 35,
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"symbol": "VDDANA",
"kind": "recommended_operating",
"unit": "V",
"min": 1.62,
"typ": null,
"max": 3.63,
"conditions": "Voltage range as stated in section 8.2.1 (VDDANA powers I/O lines, ADC, AC, DAC, PTC, oscillators)",
"source_page": 35,
"source": "datasheet"
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"email": "[email protected]"
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