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ATSAMC21E18A-MNT

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentsingle chip microcomputer-microcontrolleratsamc21e18a-mntfactory-2.0.0extractor-text

Verified ATSAMC21E18A-MNT

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 33 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAMC21E18A-MNT · VQFN-32-EP(5x5) · 33 pins
  • ✓copper: 33 copper pads, none touching another net
  • ✓datasheet: all 33 pin names found in the 1206-page datasheet
  • ✓distributor: lcsc C2055133, digikey 150-ATSAMC21E18A-MNTTR-ND, mouser 556-ATSAMC21E18A-MNT
  • ✓family: QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-_do86v2g/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height within the datasheet's package drawing (datasheet p.1171)
  • ✓pads: 33 pins = 33 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 33 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsamc21e18a-mnt.kicad_sym✓ atsamc21e18a-mnt.kicad_mod✓ atsamc21e18a-mnt.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 5d ago
viewers atsamc21e18a-mnt: viewers · Ray 5d ago
atsamc21e18a-mnt-etched.glb Publish 0.1.0 · Ray 5d ago
atsamc21e18a-mnt-etched.step atsamc21e18a-mnt: factory component page (tier=mfr) · Ray 5d ago
atsamc21e18a-mnt-hero.glb atsamc21e18a-mnt: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
atsamc21e18a-mnt-hero.overlay.json Publish 0.1.0 · Ray 5d ago
atsamc21e18a-mnt.glb Publish 0.1.0 · Ray 5d ago
atsamc21e18a-mnt.kicad_mod Publish 0.1.0 · Ray 5d ago
atsamc21e18a-mnt.kicad_sym Publish 0.1.0 · Ray 5d ago
atsamc21e18a-mnt.lbr Publish 0.1.0 · Ray 5d ago
atsamc21e18a-mnt.step Publish 0.1.0 · Ray 5d ago
package.json Publish 0.1.0 · Ray 5d ago
page.json Set visibility: public · Ray 5d ago
README.md Publish 0.1.0 · Ray 5d ago
verification.json Verified: Published by the parts factory: tier mfr, 33 pins · Ray 5d ago

ATSAMC21E18A-MNT

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · VQFN-32-EP(5x5)

ATSAMC21E18A-MNT from Microchip Tech, in a VQFN-32-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PA00 bidirectional GPIO on VDDANA with EXTINT[0], SERCOM1/PAD[0], TCC2/WO[0], AC CMP[2], and XIN32 for the 32.768 kHz crystal.
2 PA01 bidirectional GPIO on VDDANA with EXTINT[1], SERCOM1/PAD[1], TCC2/WO[1], AC CMP[3], and XOUT32 for the 32.768 kHz crystal.
3 PA02 bidirectional GPIO on VDDANA with EXTINT[2], ADC0 AIN[0], ADC1 AIN[4], PTC Y[0], and DAC VOUT.
4 PA03 bidirectional GPIO on VDDANA with EXTINT[3], ADC/DAC VREFA, ADC0 AIN[1], ADC1 AIN[5], and PTC Y[1].
5 PA04 bidirectional GPIO on VDDANA with EXTINT[4], SDADC VREFB, ADC0 AIN[4], ADC1 AIN[0], PTC Y[2], SERCOM0/PAD[0], TCC0/WO[0], CCL0/IN[0].
6 PA05 bidirectional GPIO on VDDANA with EXTINT[5], ADC0 AIN[5], ADC1 AIN[1], PTC Y[3], SERCOM0/PAD[1], TCC0/WO[1], CCL0/IN[1].
7 PA06 bidirectional GPIO on VDDANA with EXTINT[6], ADC0 AIN[6], ADC1 AIN[2], PTC Y[4], SDADC AINN[0], SERCOM0/PAD[2], TCC1/WO[0], CCL0/IN[2].
8 PA07 bidirectional GPIO on VDDANA with EXTINT[7], ADC0 AIN[7], ADC1 AIN[3], PTC Y[5], SDADC AINP[0], SERCOM0/PAD[3], TCC1/WO[1], CCL0/OUT[0].
9 VDDANA power_in Analog input supply; the pins listed with VDDANA supply (PA00-PA07 etc.) are powered from it.
10 GND power_in Ground.
11 PA08 bidirectional GPIO on VDDIO with NMI, ADC0 AIN[8], ADC1 AIN[10], PTC X[0]/Y[16], SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0], TCC1/WO[2], CCL1/IN[3].
12 PA09 bidirectional GPIO on VDDIO with EXTINT[9], ADC0 AIN[9], ADC1 AIN[11], PTC X[1]/Y[17], SERCOM0/PAD[1], SERCOM2/PAD[1], TCC0/WO[1], TCC1/WO[3], CCL1/IN[4].
13 PA10 bidirectional GPIO on VDDIO with EXTINT[10], ADC0 AIN[10], PTC X[2]/Y[18], SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0], TCC0/WO[2], GCLK_IO[4], CCL1/IN[5].
14 PA11 bidirectional GPIO on VDDIO with EXTINT[11], ADC0 AIN[11], PTC X[3]/Y[19], SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1], TCC0/WO[3], GCLK_IO[5], CCL1/OUT[1].
15 PA14 bidirectional GPIO on VDDIO with EXTINT[14], SERCOM2/PAD[2], TC4/WO[0], TCC0/WO[4], GCLK_IO[0], and XIN for the crystal oscillator.
16 PA15 bidirectional GPIO on VDDIO with EXTINT[15], SERCOM2/PAD[3], TC4/WO[1], TCC0/WO[5], GCLK_IO[1], and XOUT for the crystal oscillator.
17 PA16 bidirectional GPIO on VDDIO with EXTINT[0], PTC X[4]/Y[20], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6], GCLK_IO[2], CCL0/IN[0].
18 PA17 bidirectional GPIO on VDDIO with EXTINT[1], PTC X[5]/Y[21], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[7], GCLK_IO[3], CCL0/IN[1].
19 PA18 bidirectional GPIO on VDDIO with EXTINT[2], PTC X[6]/Y[22], SERCOM1/PAD[2], SERCOM3/PAD[2], TC4/WO[0], TCC0/WO[2], AC CMP[0], CCL0/IN[2].
20 PA19 bidirectional GPIO on VDDIO with EXTINT[3], PTC X[7]/Y[23], SERCOM1/PAD[3], SERCOM3/PAD[3], TC4/WO[1], TCC0/WO[3], AC CMP[1], CCL0/OUT[0].
21 PA22 bidirectional GPIO on VDDIO with EXTINT[6], PTC X[10]/Y[26], SERCOM3/PAD[0], SERCOM5/PAD[0], TC0/WO[0], TCC0/WO[4], GCLK_IO[6], CCL2/IN[6].
22 PA23 bidirectional GPIO on VDDIO with EXTINT[7], PTC X[11]/Y[27], SERCOM3/PAD[1], SERCOM5/PAD[1], TC0/WO[1], TCC0/WO[5], GCLK_IO[7], CCL2/IN[7].
23 PA24 bidirectional GPIO on VDDIO with EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC1/WO[0], TCC1/WO[2], CAN0/TX, AC CMP[2], CCL2/IN[8].
24 PA25 bidirectional GPIO on VDDIO with EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC1/WO[1], TCC1/WO[3], CAN0/RX, AC CMP[3], CCL2/OUT[2].
25 PA27 bidirectional GPIO on VDDIN with EXTINT[15] and GCLK_IO[0].
26 RESET input External reset input, active low.
27 PA28 bidirectional GPIO on VDDIN with EXTINT[8] and GCLK_IO[0].
28 GND power_in Ground.
29 VDDCORE power_out Regulated output supply for the core.
30 VDDIN power_in Input supply; the datasheet gives the device operating range as 2.7V to 5.5V.
31 PA30 bidirectional GPIO on VDDIN with EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], GCLK_IO[0], CCL1/IN[3], and SWCLK for serial wire debug.
32 PA31 bidirectional GPIO on VDDIN with EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1], CCL1/OUT[1], and SWDIO for serial wire debug.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package VQFN-32-EP(5x5)
Category Single Chip Microcomputer/Microcontroller
Pins 33

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VDDIN supply voltage VDDIN 2.7 5.5 V Powers I/O lines, OSC48M, TOSC and internal regulator; same voltage as VDDANA 38
VDDIO supply voltage VDDIO 2.7 5.5 V Powers I/O lines and XOSC; must be less than or equal to VDDIN 38
VDDANA supply voltage VDDANA 2.7 5.5 V Powers I/O lines and ADC, AC, DAC, PTC, SDADC, OSCULP32K, OSC32K, XOSC32K; same voltage as VDDIN 38
VDDCORE internal regulated voltage VDDCORE 1.2 V Internal regulated voltage output 38
Operating temperature -40 105 °C N grade: -40 - 105°C Matte Sn plating 18
Maximum CPU frequency 48 MHz No speed character in ordering code: OSC48M standard accuracy, CPU at 48 MHz 18

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing PC 10.3. Micro Trace Buffer MTB base address corrected from 0x41006000 to 0x41008000. 22. SUPC, Supply Controller 22.6.3.3. VDD Brown-Out Detector (BODVDD): Removed 1198
contacts tin 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. 987

CAD (KiCad official)

  • Symbol: ATSAMC21E18A-MNT
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: atsamc21e18a-mnt-etched.step / atsamc21e18a-mnt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamc21e18a-mnt.step / atsamc21e18a-mnt.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (1206 pp, sha256 5991eaad10c5cd35, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF