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ATSAMD21E17A-AU

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Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatsamd21e17a-aufactory-2.0.0extractor-text

Verified ATSAMD21E17A-AU

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 32 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAMD21E17A-AU · TQFP-32(7x7) · 32 pins
  • ✓copper: 32 copper pads, none touching another net
  • ✓datasheet: all 32 pin names found in the 1115-page datasheet
  • ✓distributor: lcsc C1337408, digikey ATSAMD21E17A-AU-ND, mouser 556-ATSAMD21E17A-AU
  • ✓family: TQFP-32_7x7mm_P0.8mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-idbwtdc4/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 32 pins = 32 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 32 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsamd21e17a-au.kicad_sym✓ atsamd21e17a-au.kicad_mod✓ atsamd21e17a-au.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 atsamd21e17a-au: viewers · Ray 5d ago
atsamd21e17a-au-etched.glb Publish 0.1.0 · Ray 5d ago
atsamd21e17a-au-etched.step atsamd21e17a-au: factory component page (tier=mfr) · Ray 5d ago
atsamd21e17a-au-hero.glb atsamd21e17a-au: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
atsamd21e17a-au-hero.overlay.json Publish 0.1.0 · Ray 5d ago
atsamd21e17a-au.glb Publish 0.1.0 · Ray 5d ago
atsamd21e17a-au.kicad_mod Publish 0.1.0 · Ray 5d ago
atsamd21e17a-au.kicad_sym Publish 0.1.0 · Ray 5d ago
atsamd21e17a-au.lbr Publish 0.1.0 · Ray 5d ago
atsamd21e17a-au.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, 32 pins · Ray 5d ago

ATSAMD21E17A-AU

Microchip Tech · Pre-ordered MCUs · TQFP-32(7x7)

ATSAMD21E17A-AU from Microchip Tech, in a TQFP-32(7x7). 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 General-purpose I/O on the VDDANA analog supply domain, also EXTINT[0] and the XIN32 32 kHz crystal input when XOSC32K is enabled.
2 PA01 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[1] and the XOUT32 32 kHz crystal output when XOSC32K is enabled.
3 PA02 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[2], analog input AIN[0], PTC input Y[0] and DAC output VOUT.
4 PA03 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[3], the external analog reference VREFA, analog input AIN[1] and PTC input Y[1].
5 PA04 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[4], the external analog reference VREFB, and analog input AIN[4].
6 PA05 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[5] and analog input AIN[5].
7 PA06 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[6] and analog input AIN[6].
8 PA07 bidirectional General-purpose I/O on the VDDANA analog supply domain, also EXTINT[7] and analog input AIN[7].
9 VDDANA power_in Analog supply voltage, specified at 1.62V to 3.63V with decoupling of 100nF and 10µF.
10 GND power_in Ground for the digital domain.
11 PA08 bidirectional General-purpose I/O on the VDDIO domain, also the NMI non-maskable interrupt input, analog input AIN[16] and SERCOM0/PAD[0] with I2C high-speed capability.
12 PA09 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[9], analog input AIN[17] and SERCOM0/PAD[1] with I2C high-speed capability.
13 PA10 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[10], analog input AIN[18] and SERCOM0/PAD[2].
14 PA11 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[11], analog input AIN[19] and SERCOM0/PAD[3].
15 PA14 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[14] and the XIN crystal input when XOSC is enabled.
16 PA15 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[15] and the XOUT crystal output when XOSC is enabled.
17 PA16 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[0], SERCOM1/PAD[0] and SERCOM3/PAD[0].
18 PA17 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[1], SERCOM1/PAD[1] and SERCOM3/PAD[1].
19 PA18 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[2], SERCOM1/PAD[2] and analog comparator output AC/CMP[0].
20 PA19 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[3], SERCOM1/PAD[3] and analog comparator output AC/CMP[1].
21 PA22 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[6], SERCOM3/PAD[0] and SERCOM5/PAD[0], with I2C high-speed capability.
22 PA23 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[7], SERCOM3/PAD[1] and the 1 kHz USB start-of-frame output SOF 1kHz.
23 PA24 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[12] and the USB D- data line DM; a pull-up is recommended if the pin is unconnected to avoid extra power consumption below 1 mA.
24 PA25 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[13] and the USB D+ data line DP; a pull-up is recommended if the pin is unconnected to avoid extra power consumption below 1 mA.
25 PA27 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[15], TCC3/WO[6] and GCLK_IO[0].
26 RESET input External reset input, active low, with an internal pull-up resistor; the low-level threshold is below 0.36 × VDDIO for VDDIO 2.7V to 3.6V.
27 PA28 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[8], TCC3/WO[7] and GCLK_IO[0].
28 GND power_in Ground for the digital domain.
29 VDDCORE power_out Core supply output from the internal regulator, 1.6V to 1.8V, requiring a 1µF decoupling capacitor close to the device.
30 VDDIN power_in Input supply to the internal voltage regulator and I/O supply, specified at 1.62V to 3.63V.
31 PA30 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[10], TCC1/WO[0] and the SWCLK Serial Wire Debug clock pin, which should have a pull-up on the schematic.
32 PA31 bidirectional General-purpose I/O on the VDDIO domain, also EXTINT[11], TCC1/WO[1] and the SWDIO Serial Wire Debug data pin, active when a debugger is present.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-32(7x7)
Category Embedded Processors & Controllers
Pins 32

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating voltage (VDD: VDDIN, VDDIO and VDDANA) VDD 1.62 3.63 V 36

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
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. 860

CAD (KiCad official)

  • Symbol: ATSAMD21E17A-AU
  • Footprint: Package_QFP:TQFP-32_7x7mm_P0.8mm
  • 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: atsamd21e17a-au-etched.step / atsamd21e17a-au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamd21e17a-au.step / atsamd21e17a-au.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (1115 pp, sha256 503cf97e1fd7dbb2, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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