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ATSAMD20J16A-AU

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Microchip Tech Pre-ordered MCUs, TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatsamd20j16a-aufactory-2.0.0extractor-text

Verified ATSAMD20J16A-AU

by Ray · last 13 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

13 Nov 2026RayPublished by the parts factory: tier mfr, 64 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • •array (skip): not an array of element pairs
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAMD20J16A-AU · TQFP-64(10x10) · 64 pins
  • ✓copper: 64 copper pads, none touching another net
  • ✓datasheet: all 64 pin names found in the 731-page datasheet
  • ✓distributor: lcsc C619197, digikey ATSAMD20J16A-AU-ND, mouser 556-ATSAMD20J16A-AU
  • ✓family: TQFP-64_10x10mm_P0.5mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-p0fovmhx/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.645)
  • ✓pads: 64 pins = 64 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 64 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 74 kB, viewers/symbol.html 41 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsamd20j16a-au.kicad_sym✓ atsamd20j16a-au.kicad_mod✓ atsamd20j16a-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
viewers atsamd20j16a-au: viewers · Ray
atsamd20j16a-au-etched.glb atsamd20j16a-au: factory component page (tier=mfr) · Ray
atsamd20j16a-au-etched.step atsamd20j16a-au: factory component page (tier=mfr) · Ray
atsamd20j16a-au-hero.glb atsamd20j16a-au: hero GLB from the etched model (keeps the MPN mark) · Ray
atsamd20j16a-au-hero.overlay.json atsamd20j16a-au: hero GLB from the etched model (keeps the MPN mark) · Ray
atsamd20j16a-au.glb Publish 0.1.0 · Ray
atsamd20j16a-au.kicad_mod Publish 0.1.0 · Ray
atsamd20j16a-au.kicad_sym Publish 0.1.0 · Ray
atsamd20j16a-au.lbr Publish 0.1.0 · Ray
atsamd20j16a-au.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier mfr, 64 pins · Ray

ATSAMD20J16A-AU

Microchip Tech · Pre-ordered MCUs · TQFP-64(10x10)

ATSAMD20J16A-AU from Microchip Tech, in a TQFP-64(10x10). 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 supply with EXTINT[0], SERCOM1/PAD[0], TC2/WO[0]; also XIN32 for the 32 kHz crystal oscillator.
2 PA01 bidirectional GPIO on VDDANA supply with EXTINT[1], SERCOM1/PAD[1], TC2/WO[1]; also XOUT32 for the 32 kHz crystal oscillator.
3 PA02 bidirectional GPIO on VDDANA supply with EXTINT[2], ADC AIN[0], PTC Y[0] and DAC VOUT.
4 PA03 bidirectional GPIO on VDDANA supply with EXTINT[3], ADC/DAC VREFA external reference, ADC AIN[1], PTC Y[1].
5 PB04 bidirectional GPIO on VDDANA supply with EXTINT[4], ADC AIN[12], PTC Y[10].
6 PB05 bidirectional GPIO on VDDANA supply with EXTINT[5], ADC AIN[13], PTC Y[11].
7 GNDANA power_in Ground for the analog power domain.
8 VDDANA power_in Analog supply, 1.62V to 3.63V; powers ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K; must equal VDDIO and VDDIN.
9 PB06 bidirectional GPIO on VDDANA supply with EXTINT[6], ADC AIN[14], PTC Y[12].
10 PB07 bidirectional GPIO on VDDANA supply with EXTINT[7], ADC AIN[15], PTC Y[13].
11 PB08 bidirectional GPIO on VDDANA supply with EXTINT[8], ADC AIN[2], PTC Y[14], SERCOM4/PAD[0], TC4/WO[0].
12 PB09 bidirectional GPIO on VDDANA supply with EXTINT[9], ADC AIN[3], PTC Y[15], SERCOM4/PAD[1], TC4/WO[1].
13 PA04 bidirectional GPIO on VDDANA supply with EXTINT[4], ADC VREFB, ADC AIN[4], AC AIN[0], PTC Y[2], SERCOM0/PAD[0], TC0/WO[0].
14 PA05 bidirectional GPIO on VDDANA supply with EXTINT[5], ADC AIN[5], AC AIN[1], PTC Y[3], SERCOM0/PAD[1], TC0/WO[1].
15 PA06 bidirectional GPIO on VDDANA supply with EXTINT[6], ADC AIN[6], AC AIN[2], PTC Y[4], SERCOM0/PAD[2], TC1/WO[0].
16 PA07 bidirectional GPIO on VDDANA supply with EXTINT[7], ADC AIN[7], AC AIN[3], PTC Y[5], SERCOM0/PAD[3], TC1/WO[1].
17 PA08 bidirectional GPIO on VDDIO supply, I2C-capable pin, with NMI, ADC AIN[16], PTC X[0], SERCOM0/PAD[0], SERCOM2/PAD[0], TC0/WO[0].
18 PA09 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[9], ADC AIN[17], PTC X[1], SERCOM0/PAD[1], SERCOM2/PAD[1], TC0/WO[1].
19 PA10 bidirectional GPIO on VDDIO supply with EXTINT[10], ADC AIN[18], PTC X[2], SERCOM0/PAD[2], SERCOM2/PAD[2], TC1/WO[0], GCLK_IO[4].
20 PA11 bidirectional GPIO on VDDIO supply with EXTINT[11], ADC AIN[19], PTC X[3], SERCOM0/PAD[3], SERCOM2/PAD[3], TC1/WO[1], GCLK_IO[5].
21 VDDIO power_in I/O supply, 1.62V to 3.63V; powers I/O lines, OSC8M and XOSC; same voltage as VDDIN and VDDANA.
22 GND power_in Ground.
23 PB10 bidirectional GPIO on VDDIO supply with EXTINT[10], SERCOM4/PAD[2], TC5/WO[0], GCLK_IO[4].
24 PB11 bidirectional GPIO on VDDIO supply with EXTINT[11], SERCOM4/PAD[3], TC5/WO[1], GCLK_IO[5].
25 PB12 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[12], PTC X[12], SERCOM4/PAD[0], TC4/WO[0], GCLK_IO[6].
26 PB13 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[13], PTC X[13], SERCOM4/PAD[1], TC4/WO[1], GCLK_IO[7].
27 PB14 bidirectional GPIO on VDDIO supply with EXTINT[14], PTC X[14], SERCOM4/PAD[2], TC5/WO[0], GCLK_IO[0].
28 PB15 bidirectional GPIO on VDDIO supply with EXTINT[15], PTC X[15], SERCOM4/PAD[3], TC5/WO[1], GCLK_IO[1].
29 PA12 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0], TC2/WO[0], AC CMP[0].
30 PA13 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1], TC2/WO[1], AC CMP[1].
31 PA14 bidirectional GPIO on VDDIO supply with EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC3/WO[0], GCLK_IO[0]; also XIN for the crystal oscillator.
32 PA15 bidirectional GPIO on VDDIO supply with EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC3/WO[1], GCLK_IO[1]; also XOUT for the crystal oscillator.
33 GND power_in Ground.
34 VDDIO power_in I/O supply, 1.62V to 3.63V; powers I/O lines, OSC8M and XOSC; same voltage as VDDIN and VDDANA.
35 PA16 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[0], PTC X[4], SERCOM1/PAD[0], SERCOM3/PAD[0], TC2/WO[0], GCLK_IO[2].
36 PA17 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[1], PTC X[5], SERCOM1/PAD[1], SERCOM3/PAD[1], TC2/WO[1], GCLK_IO[3].
37 PA18 bidirectional GPIO on VDDIO supply with EXTINT[2], PTC X[6], SERCOM1/PAD[2], SERCOM3/PAD[2], TC3/WO[0], AC CMP[0].
38 PA19 bidirectional GPIO on VDDIO supply with EXTINT[3], PTC X[7], SERCOM1/PAD[3], SERCOM3/PAD[3], TC3/WO[1], AC CMP[1].
39 PB16 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[0], SERCOM5/PAD[0], TC6/WO[0], GCLK_IO[2].
40 PB17 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[1], SERCOM5/PAD[1], TC6/WO[1], GCLK_IO[3].
41 PA20 bidirectional GPIO on VDDIO supply with EXTINT[4], PTC X[8], SERCOM5/PAD[2], SERCOM3/PAD[2], TC7/WO[0], GCLK_IO[4].
42 PA21 bidirectional GPIO on VDDIO supply with EXTINT[5], PTC X[9], SERCOM5/PAD[3], SERCOM3/PAD[3], TC7/WO[1], GCLK_IO[5].
43 PA22 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[6], PTC X[10], SERCOM3/PAD[0], SERCOM5/PAD[0], TC4/WO[0], GCLK_IO[6].
44 PA23 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[7], PTC X[11], SERCOM3/PAD[1], SERCOM5/PAD[1], TC4/WO[1], GCLK_IO[7].
45 PA24 bidirectional GPIO on VDDIO supply with EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC5/WO[0].
46 PA25 bidirectional GPIO on VDDIO supply with EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC5/WO[1].
47 GND power_in Ground.
48 VDDIO power_in I/O supply, 1.62V to 3.63V; powers I/O lines, OSC8M and XOSC; same voltage as VDDIN and VDDANA.
49 PB22 bidirectional GPIO on VDDIO supply with EXTINT[6], SERCOM5/PAD[2], TC7/WO[0], GCLK_IO[0].
50 PB23 bidirectional GPIO on VDDIO supply with EXTINT[7], SERCOM5/PAD[3], TC7/WO[1], GCLK_IO[1].
51 PA27 bidirectional GPIO on VDDIO supply with EXTINT[15] and GCLK_IO[0].
52 RESET input Active-low external reset input with internal pull-up; low-level threshold below 0.33VDDIO (1.6V-2.0V) or 0.36VDDIO (2.7V-3.6V).
53 PA28 bidirectional GPIO on VDDIO supply with EXTINT[8] and GCLK_IO[0].
54 GND power_in Ground.
55 VDDCORE power_out Internal regulated 1.2V output that powers core, memories, peripherals and DFLL48M; needs external decoupling capacitor (1µF typical).
56 VDDIN power_in Input supply, 1.62V to 3.63V; powers I/O lines and the internal voltage regulator.
57 PA30 bidirectional GPIO on VDDIO supply with EXTINT[10], SERCOM1/PAD[2], TC1/WO[0], GCLK_IO[0]; also SWCLK serial wire clock (1kΩ pull-up to VDD recommended).
58 PA31 bidirectional GPIO on VDDIO supply with EXTINT[11], SERCOM1/PAD[3], TC1/WO[1]; also SWDIO, activated only in the presence of a debugger.
59 PB30 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[14], SERCOM5/PAD[0], TC0/WO[0].
60 PB31 bidirectional GPIO on VDDIO supply, I2C-capable pin, with EXTINT[15], SERCOM5/PAD[1], TC0/WO[1].
61 PB00 bidirectional GPIO on VDDANA supply with EXTINT[0], ADC AIN[8], PTC Y[6], SERCOM5/PAD[2], TC7/WO[0].
62 PB01 bidirectional GPIO on VDDANA supply with EXTINT[1], ADC AIN[9], PTC Y[7], SERCOM5/PAD[3], TC7/WO[1].
63 PB02 bidirectional GPIO on VDDANA supply with EXTINT[2], ADC AIN[10], PTC Y[8], SERCOM5/PAD[0], TC6/WO[0].
64 PB03 bidirectional GPIO on VDDANA supply with EXTINT[3], ADC AIN[11], PTC Y[9], SERCOM5/PAD[1], TC6/WO[1].

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-64(10x10)
Category Embedded Processors & Controllers
Pins 64

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 supply voltage VDD 1.62 3.63 V -40°C to +85°C, DC up to 48 MHz 1
Operating temperature -40 85 °C 1.62V - 3.63V 1
CPU clock frequency 48 MHz 1.62V - 3.63V, -40°C to +85°C, DC up to 48 MHz 1
VDDIO supply voltage VDDIO 1.62 3.63 V Powers I/O lines, OSC8M and XOSC 27
VDDIN supply voltage VDDIN 1.62 3.63 V Powers I/O lines and the internal regulator 27
VDDANA supply voltage VDDANA 1.62 3.63 V Powers I/O lines and the ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K 27
VDDCORE internal regulated voltage VDDCORE 1.2 V Internal regulated voltage output 27

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. 551

CAD (KiCad official)

  • Symbol: ATSAMD20J16A-AU
  • Footprint: Package_QFP:TQFP-64_10x10mm_P0.5mm
  • 3D model: TQFP-64(10x10) (KiCad packages3D, STEP)
  • 3D model files: atsamd20j16a-au-etched.step / atsamd20j16a-au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamd20j16a-au.step / atsamd20j16a-au.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (731 pp, sha256 2505526f248dd8c2, retrieved 2026-11-13, 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