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ATSAMD20J16A-AUT

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

componentsingle chip microcomputer-microcontrolleratsamd20j16a-autfactory-2.0.0extractor-text

Verified ATSAMD20J16A-AUT

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-AUT · 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 C619353, digikey ATSAMD20J16A-AUTTR-ND, mouser 556-ATSAMD20J16A-AUT
  • ✓family: TQFP-64_10x10mm_P0.5mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ed3_p05o/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-aut.kicad_sym✓ atsamd20j16a-aut.kicad_mod✓ atsamd20j16a-aut.step
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ATSAMD20J16A-AUT

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-64(10x10)

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

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-64(10x10)
Category Single Chip Microcomputer/Microcontroller
Pins 64

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