component
ATSAML21E17B-MUT
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "atsaml21e17b-mut",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"single chip microcomputer-microcontroller",
"atsaml21e17b-mut",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"atsaml21e17b-mut.kicad_sym",
"atsaml21e17b-mut.kicad_mod",
"atsaml21e17b-mut.glb",
"atsaml21e17b-mut.step",
"atsaml21e17b-mut.lbr",
"docs/hero.png",
"docs/atsaml21e17b-mut-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"atsaml21e17b-mut-hero.glb",
"atsaml21e17b-mut-hero.overlay.json",
"atsaml21e17b-mut-etched.glb"
],
"component": {
"mpn": "ATSAML21E17B-MUT",
"manufacturer": "Microchip Tech",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Single Chip Microcomputer/Microcontroller",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/41942ba97f76aad6042188ffe9080a2f.pdf",
"parts": {
"symbol": "atsaml21e17b-mut.kicad_sym",
"footprint": "atsaml21e17b-mut.kicad_mod",
"model_3d": "atsaml21e17b-mut-hero.glb",
"model_3d_plain": "atsaml21e17b-mut-etched.glb",
"model_3d_step": "atsaml21e17b-mut-etched.step",
"model_3d_step_plain": "atsaml21e17b-mut.step",
"lbr": "atsaml21e17b-mut.lbr"
},
"distributor_links": {
"lcsc": "C2053404",
"digikey": "ATSAML21E17B-MUTTR-ND",
"mouser": "556-ATSAML21E17B-MUT"
},
"distributor_check": {
"checked_at": "2026-10-31T18:41:54Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAML21E17B-MUTTR-ND",
"status": "found"
},
"mouser": {
"pn": "556-ATSAML21E17B-MUT",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[0]/EXTWAKE[0], SERCOM1 PAD[0], TCC2 WO[0], and XIN32 for the 32 kHz crystal oscillator, supplied from VSWOUT."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[1]/EXTWAKE[1], SERCOM1 PAD[1], TCC2 WO[1], and XOUT32 for the 32 kHz crystal oscillator, supplied from VSWOUT."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[2]/EXTWAKE[2], analog input AIN[0], PTC Y[0], DAC VOUT[0] and OPAMP OA_NEG[0]; analog peripherals enabled on this pin interfere with its digital alternate functions."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[3]/EXTWAKE[3], ADC VREFA, analog input AIN[1] and PTC Y[1]; analog peripherals enabled on this pin interfere with its digital alternate functions."
},
{
"number": "5",
"name": "PA04",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[4]/EXTWAKE[4], ADC VREFB, analog inputs AIN[4] and AIN[0], OPAMP OA_OUT[2], SERCOM0 PAD[0] and TCC0 WO[0]."
},
{
"number": "6",
"name": "PA05",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[5]/EXTWAKE[5], analog inputs AIN[5] and AIN[1], DAC VOUT[1], OPAMP OA_POS[2], SERCOM0 PAD[1] and TCC0 WO[1]."
},
{
"number": "7",
"name": "PA06",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[6]/EXTWAKE[6], analog inputs AIN[6] and AIN[2], PTC Y[4], OPAMP OA_POS[0], SERCOM0 PAD[2] and TCC1 WO[0]."
},
{
"number": "8",
"name": "PA07",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[7]/EXTWAKE[7], analog inputs AIN[7] and AIN[3], OPAMP OA_OUT[0], SERCOM0 PAD[3] and TCC1 WO[1]."
},
{
"number": "9",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply voltage, specified at 1.6V to 3.6V; on SAM L21E it also supplies VDDIO internally."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground for the digital power domain."
},
{
"number": "11",
"name": "PA08",
"type": "bidirectional",
"description": "PORT group A I/O pin, also NMI, analog input AIN[16], PTC X[0]/Y[6], SERCOM0/SERCOM2 PAD[0], TCC0 WO[0] and TCC1 WO[2]; this is a High Sink pin and supports I2C."
},
{
"number": "12",
"name": "PA09",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[9], analog input AIN[17], PTC X[1]/Y[7], SERCOM0/SERCOM2 PAD[1], TCC0 WO[1] and TCC1 WO[3]; this is a High Sink pin and supports I2C."
},
{
"number": "13",
"name": "PA10",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[10], analog input AIN[18], PTC X[2]/Y[8], SERCOM0/SERCOM2 PAD[2], TCC1 WO[0], TCC0 WO[2] and GCLK_IO[4]."
},
{
"number": "14",
"name": "PA11",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[11], analog input AIN[19], PTC X[3]/Y[9], SERCOM0/SERCOM2 PAD[3], TCC1 WO[1], TCC0 WO[3] and GCLK_IO[5]."
},
{
"number": "15",
"name": "PA14",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[14], SERCOM2/SERCOM4 PAD[2], TC4 WO[0], TCC0 WO[4] and GCLK_IO[0]; it is also the XIN oscillator input when XOSC is used."
},
{
"number": "16",
"name": "PA15",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[15], SERCOM2/SERCOM4 PAD[3], TC4 WO[1], TCC0 WO[5] and GCLK_IO[1]; it is also the XOUT oscillator output when XOSC is used."
},
{
"number": "17",
"name": "PA16",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[0], PTC X[4], SERCOM1/SERCOM3 PAD[0], TCC2 WO[0], TCC0 WO[6], GCLK_IO[2] and CCL0 IN[0]; this pin supports I2C and is a High Sink pin."
},
{
"number": "18",
"name": "PA17",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[1], PTC X[5], SERCOM1/SERCOM3 PAD[1], TCC2 WO[1], TCC0 WO[7], GCLK_IO[3] and CCL0 IN[1]; this pin supports I2C and is a High Sink pin."
},
{
"number": "19",
"name": "PA18",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[2], PTC X[6], SERCOM1/SERCOM3 PAD[2], TC4 WO[0], TCC0 WO[2], analog comparator AC/CMP[0] and CCL0 IN[2]."
},
{
"number": "20",
"name": "PA19",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[3], PTC X[7], SERCOM1/SERCOM3 PAD[3], TC4 WO[1], TCC0 WO[3], analog comparator AC/CMP[1] and CCL0 OUT."
},
{
"number": "21",
"name": "PA22",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[6], PTC X[10], SERCOM3/SERCOM5 PAD[0], TC0 WO[0], TCC0 WO[4], GCLK_IO[6] and CCL2 IN[0]; this is a High Sink pin and supports I2C."
},
{
"number": "22",
"name": "PA23",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[7], PTC X[11], SERCOM3/SERCOM5 PAD[1], TC0 WO[1], TCC0 WO[5], USB SOF 1kHz, GCLK_IO[7] and CCL2 IN[1]; this is a High Sink pin and supports I2C."
},
{
"number": "23",
"name": "PA24",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[12], SERCOM3/SERCOM5 PAD[2], TC1 WO[0], TCC1 WO[2], USB DM and CCL2 IN[2]; this pin has a reduced pull resistance range of 50 to 150 kΩ."
},
{
"number": "24",
"name": "PA25",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[13], SERCOM3/SERCOM5 PAD[3], TC1 WO[1], TCC1 WO[3], USB DP and CCL2 OUT; this pin has a reduced pull resistance range of 50 to 150 kΩ."
},
{
"number": "25",
"name": "PA27",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[15] and GCLK_IO[0], supplied from VDDIN; this is a High Sink pin."
},
{
"number": "26",
"name": "RESET",
"type": "input",
"description": "External active-low reset input (RESETN) with an internal pull-up resistor; an external pull-up is optional."
},
{
"number": "27",
"name": "VSW",
"type": "power_out",
"description": "On-chip switching-mode regulator output; in switching mode it connects to VDDCORE through a 10 µH inductor, and in linear-only mode it is not connected."
},
{
"number": "28",
"name": "GND",
"type": "power_in",
"description": "Ground for the digital power domain."
},
{
"number": "29",
"name": "VDDCORE",
"type": "passive",
"description": "Core supply pin: the linear regulator output with external decoupling (typically 0.9V to 1.2V) in linear mode, or the core supply input connected to VSW in switching mode."
},
{
"number": "30",
"name": "VDDIN",
"type": "power_in",
"description": "Digital supply voltage, specified at 1.6V to 3.6V, with 100nF and 10µF decoupling close to the device."
},
{
"number": "31",
"name": "PA30",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[10], SERCOM1 PAD[2], TCC1 WO[0], GCLK_IO[0] and CCL1 IN[0]; it is the SWCLK debug clock input (SWD) and is supplied from VDDIN."
},
{
"number": "32",
"name": "PA31",
"type": "bidirectional",
"description": "PORT group A I/O pin, also EXTINT[11], SERCOM1 PAD[3], TCC1 WO[1] and CCL1 OUT; it is the SWDIO debug data pin, activated when a debugger is present, and is supplied from VDDIN."
},
{
"number": "33",
"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 QFN-32 pin mapping was taken from the SAM L21E pinout diagram (page 25) and cross-checked agains; VDDCORE is a linear-regulator output or a switched-regulator input depending on mode (Table 51-1), s; On SAM L21E, VDDIO is electrically connected to VDDANA and supplied through VDDANA (note 6, page 30)"
],
"pages_sent": 119,
"cost_usd": 0.1424,
"at": "2026-10-31T18:41:38"
},
"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": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atsaml21e17b-mut.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsaml21e17b-mut-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "7f5a9c45a04455297f71b376506877c16f13f22b6dc3687f93a1fa5f66d6c455",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}