component
ATSAMD21E16B-MF
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": "atsamd21e16b-mf",
"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",
"embedded processors & controllers",
"atsamd21e16b-mf",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"atsamd21e16b-mf.kicad_sym",
"atsamd21e16b-mf.kicad_mod",
"atsamd21e16b-mf.glb",
"atsamd21e16b-mf.step",
"atsamd21e16b-mf.lbr",
"docs/hero.png",
"docs/atsamd21e16b-mf-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"atsamd21e16b-mf-hero.glb",
"atsamd21e16b-mf-hero.overlay.json",
"atsamd21e16b-mf-etched.glb"
],
"component": {
"mpn": "ATSAMD21E16B-MF",
"manufacturer": "Microchip Tech",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8f4288946b8d05495900f08c0fbdc747.pdf",
"parts": {
"symbol": "atsamd21e16b-mf.kicad_sym",
"footprint": "atsamd21e16b-mf.kicad_mod",
"model_3d": "atsamd21e16b-mf-hero.glb",
"model_3d_plain": "atsamd21e16b-mf-etched.glb",
"model_3d_step": "atsamd21e16b-mf-etched.step",
"model_3d_step_plain": "atsamd21e16b-mf.step",
"lbr": "atsamd21e16b-mf.lbr"
},
"distributor_links": {
"lcsc": "C1522094",
"digikey": "ATSAMD21E16B-MF-ND",
"mouser": "556-ATSAMD21E16B-MF"
},
"distributor_check": {
"checked_at": "2026-10-30T22:54:16Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAMD21E16B-MF-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATSAMD21E16B-MF",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "Port A I/O pin PA00 on the VDDANA domain, also usable as XIN32 (32.768 kHz crystal input), EXTINT[0], SERCOM1/PAD[0] and TCC2/WO[0]."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "Port A I/O pin PA01 on the VDDANA domain, also usable as XOUT32 (32 kHz crystal output), EXTINT[1], SERCOM1/PAD[1] and TCC2/WO[1]."
},
{
"number": "3",
"name": "PA02",
"type": "bidirectional",
"description": "Port A I/O pin PA02 on the VDDANA domain, with analog input AIN[0], PTC input Y[0], DAC output VOUT, EXTINT[2] and TCC3/WO[0]."
},
{
"number": "4",
"name": "PA03",
"type": "bidirectional",
"description": "Port A I/O pin PA03 on the VDDANA domain, with analog input AIN[1], ADC/DAC reference VREFA, PTC input Y[1], EXTINT[3] and TCC3/WO[1]."
},
{
"number": "5",
"name": "PA04",
"type": "bidirectional",
"description": "Port A I/O pin PA04 on the VDDANA domain, with ADC input AIN[4], AC input AIN[0], ADC reference VREFB, PTC input Y[2], EXTINT[4], SERCOM0/PAD[0] and TCC0/WO[0]."
},
{
"number": "6",
"name": "PA05",
"type": "bidirectional",
"description": "Port A I/O pin PA05 on the VDDANA domain, with ADC input AIN[5], AC input AIN[1], PTC input Y[3], EXTINT[5], SERCOM0/PAD[1] and TCC0/WO[1]."
},
{
"number": "7",
"name": "PA06",
"type": "bidirectional",
"description": "Port A I/O pin PA06 on the VDDANA domain, with ADC input AIN[6], AC input AIN[2], PTC input Y[4], EXTINT[6], SERCOM0/PAD[2] and TCC1/WO[0]."
},
{
"number": "8",
"name": "PA07",
"type": "bidirectional",
"description": "Port A I/O pin PA07 on the VDDANA domain, with ADC input AIN[7], AC input AIN[3], PTC input Y[5], EXTINT[7], SERCOM0/PAD[3] and TCC1/WO[1]."
},
{
"number": "9",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply pin for the analog domain, specified at 1.62 V to 3.63 V and decoupled with 100 nF and 10 µF capacitors as per the schematic checklist."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the digital domain of the device."
},
{
"number": "11",
"name": "PA08",
"type": "bidirectional",
"description": "Port A I/O pin PA08 on the I/O supply domain, also NMI, ADC input AIN[16], PTC input X[0], SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0] and TCC1/WO[2], and usable as an I2C High-speed pin."
},
{
"number": "12",
"name": "PA09",
"type": "bidirectional",
"description": "Port A I/O pin PA09 on the I/O supply domain, with EXTINT[9], ADC input AIN[17], PTC input X[1], SERCOM0/PAD[1], SERCOM2/PAD[1], TCC0/WO[1] and TCC1/WO[3], and usable as an I2C High-speed pin."
},
{
"number": "13",
"name": "PA10",
"type": "bidirectional",
"description": "Port A I/O pin PA10 on the I/O supply domain, with EXTINT[10], ADC input AIN[18], PTC input X[2], SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0] and TCC0/WO[2]."
},
{
"number": "14",
"name": "PA11",
"type": "bidirectional",
"description": "Port A I/O pin PA11 on the I/O supply domain, with EXTINT[11], ADC input AIN[19], PTC input X[3], SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1] and TCC0/WO[3]."
},
{
"number": "15",
"name": "PA14",
"type": "bidirectional",
"description": "Port A I/O pin PA14 on the I/O supply domain, also XIN (crystal oscillator input when XOSC is enabled), with EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC3/WO[0], TCC0/WO[4] and GCLK_IO[0]."
},
{
"number": "16",
"name": "PA15",
"type": "bidirectional",
"description": "Port A I/O pin PA15 on the I/O supply domain, also XOUT (crystal oscillator output when XOSC is enabled), with EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC3/WO[1], TCC0/WO[5] and GCLK_IO[1]."
},
{
"number": "17",
"name": "PA16",
"type": "bidirectional",
"description": "Port A I/O pin PA16 on the I/O supply domain, with EXTINT[0], PTC input X[4], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6] and GCLK_IO[2], and usable as an I2C High-speed pin."
},
{
"number": "18",
"name": "PA17",
"type": "bidirectional",
"description": "Port A I/O pin PA17 on the I/O supply domain, with EXTINT[1], PTC input X[5], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[7] and GCLK_IO[3], and usable as an I2C High-speed pin."
},
{
"number": "19",
"name": "PA18",
"type": "bidirectional",
"description": "Port A I/O pin PA18 on the I/O supply domain, with EXTINT[2], PTC input X[6], SERCOM1/PAD[2], SERCOM3/PAD[2], TC3/WO[0], TCC0/WO[2] and AC output CMP[0]."
},
{
"number": "20",
"name": "PA19",
"type": "bidirectional",
"description": "Port A I/O pin PA19 on the I/O supply domain, with EXTINT[3], PTC input X[7], SERCOM1/PAD[3], SERCOM3/PAD[3], TC3/WO[1], TCC0/WO[3] and AC output CMP[1]."
},
{
"number": "21",
"name": "PA22",
"type": "bidirectional",
"description": "Port A I/O pin PA22 on the I/O supply domain, with EXTINT[6], PTC input X[10], SERCOM3/PAD[0], SERCOM5/PAD[0], TC4/WO[0], TCC0/WO[4] and GCLK_IO[6], and usable as an I2C High-speed pin."
},
{
"number": "22",
"name": "PA23",
"type": "bidirectional",
"description": "Port A I/O pin PA23 on the I/O supply domain, with EXTINT[7], PTC input X[11], SERCOM3/PAD[1], SERCOM5/PAD[1], TC4/WO[1], TCC0/WO[5], USB SOF 1 kHz and GCLK_IO[7], and usable as an I2C High-speed pin."
},
{
"number": "23",
"name": "PA24",
"type": "bidirectional",
"description": "Port A I/O pin PA24 with USB DM, EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC5/WO[0] and TCC1/WO[2]; if unconnected, an input pull-up should be enabled to avoid up to 1 mA extra consumption, and the pin has no drive-strength option."
},
{
"number": "24",
"name": "PA25",
"type": "bidirectional",
"description": "Port A I/O pin PA25 with USB DP, EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC5/WO[1] and TCC1/WO[3]; if unconnected, an input pull-up should be enabled to avoid up to 1 mA extra consumption, and the pin has no drive-strength option."
},
{
"number": "25",
"name": "PA27",
"type": "bidirectional",
"description": "Port A I/O pin PA27 on the I/O supply domain, with EXTINT[15], TCC3/WO[6] and GCLK_IO[0]."
},
{
"number": "26",
"name": "RESET",
"type": "input",
"description": "External active-low reset input with an internal pull-up resistor; the low-level threshold is below 0.36 x VDDIO for 2.7 V to 3.6 V (below 0.33 x VDDIO for 1.6 V to 2.0 V)."
},
{
"number": "27",
"name": "PA28",
"type": "bidirectional",
"description": "Port A I/O pin PA28 on the I/O supply domain, with EXTINT[8], TCC3/WO[7] and GCLK_IO[0]."
},
{
"number": "28",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the digital (I/O) domain of the device."
},
{
"number": "29",
"name": "VDDCORE",
"type": "power_out",
"description": "Core supply of 1.6 V to 1.8 V from the internal voltage regulator, which requires a 1 µF decoupling capacitor close to the pin."
},
{
"number": "30",
"name": "VDDIN",
"type": "power_in",
"description": "Input supply pin (1.62 V to 3.63 V) that feeds the internal regulator and, on this 32-pin package, the I/O pads, decoupled with 10 µF and 100 nF capacitors close to the device."
},
{
"number": "31",
"name": "PA30",
"type": "bidirectional",
"description": "Port A I/O pin PA30, also SWCLK (Serial Wire Debug clock, where a pull-up on SWCLK is recommended), with EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], TCC3/WO[4] and GCLK_IO[0]."
},
{
"number": "32",
"name": "PA31",
"type": "bidirectional",
"description": "Port A I/O pin PA31, also SWDIO (Serial Wire Debug data, activated only in the presence of a debugger), with EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1] and TCC3/WO[5]."
},
{
"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 QFN32 pinout in the text lists pins 1 to 32 only. The exposed thermal pad of the QFN-32-EP packa; The 32-pin package has no separate VDDIO pin in the pinout. Table 7-6 places the I/O pads of this pa; Pin type for VDDCORE is set to power_out because the datasheet calls it the regulated core supply fr",
"exposed pad 33 added from the footprint"
],
"pages_sent": 121,
"cost_usd": 0.6003,
"at": "2026-10-30T22:53:54"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/8f4288946b8d05495900f08c0fbdc747.pdf",
"pages": 1115,
"sha256": "ecf2cbbc85ccd5f6",
"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": "atsamd21e16b-mf.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": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsamd21e16b-mf-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": "fcb667f8e151f6c484f27ad06529bb0d6ecf4d9625e02184de15f9957f989a3f",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}