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ATSAMD21G17A-MUT

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Microchip Tech Pre-ordered MCUs, QFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatsamd21g17a-mutfactory-2.0.0extractor-text

Verified ATSAMD21G17A-MUT

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, 49 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAMD21G17A-MUT · QFN-48-EP(7x7) · 49 pins
  • ✓copper: 49 copper pads, none touching another net
  • ✓datasheet: all 49 pin names found in the 1148-page datasheet
  • ✓distributor: lcsc C614532, digikey ATSAMD21G17A-MUTTR-ND, mouser 556-ATSAMD21G17A-MUT
  • ✓family: QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-tngabkwb/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.1073)
  • ✓pads: 49 pins = 49 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 49 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsamd21g17a-mut.kicad_sym✓ atsamd21g17a-mut.kicad_mod✓ atsamd21g17a-mut.step
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Ray Publish 0.1.0 f1b7422 5d ago

ATSAMD21G17A-MUT

Microchip Tech · Pre-ordered MCUs · QFN-48-EP(7x7)

ATSAMD21G17A-MUT from Microchip Tech, in a QFN-48-EP(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 VDDANA, EXTINT[0], SERCOM1 PAD[0], TCC2/WO[0]; also XIN32 for the 32kHz crystal oscillator.
2 PA01 bidirectional General-purpose I/O on VDDANA, EXTINT[1], SERCOM1 PAD[1], TCC2/WO[1]; also XOUT32 for the 32kHz crystal oscillator.
3 PA02 bidirectional General-purpose I/O on VDDANA with EXTINT[2], ADC AIN[0], PTC Y[0] and DAC VOUT output, TCC3/WO[0].
4 PA03 bidirectional General-purpose I/O on VDDANA with EXTINT[3], ADC/DAC VREFA external reference, ADC AIN[1], PTC Y[1], TCC3/WO[1].
5 GNDANA power_in Analog ground for the VDDANA domain.
6 VDDANA power_in Analog supply input for the analog I/O pins and analog blocks.
7 PB08 bidirectional General-purpose I/O on VDDANA with EXTINT[8], ADC AIN[2], PTC Y[14], SERCOM4 PAD[0], TC4/WO[0], TCC3/WO[6].
8 PB09 bidirectional General-purpose I/O on VDDANA with EXTINT[9], ADC AIN[3], PTC Y[15], SERCOM4 PAD[1], TC4/WO[1], TCC3/WO[7].
9 PA04 bidirectional General-purpose I/O on VDDANA with EXTINT[4], ADC/VREFB, ADC AIN[4], AC AIN[0], PTC Y[2], SERCOM0 PAD[0], TCC0/WO[0], TCC3/WO[2].
10 PA05 bidirectional General-purpose I/O on VDDANA with EXTINT[5], ADC AIN[5], AC AIN[1], PTC Y[3], SERCOM0 PAD[1], TCC0/WO[1], TCC3/WO[3].
11 PA06 bidirectional General-purpose I/O on VDDANA with EXTINT[6], ADC AIN[6], AC AIN[2], PTC Y[4], SERCOM0 PAD[2], TCC1/WO[0], TCC3/WO[4].
12 PA07 bidirectional General-purpose I/O on VDDANA with EXTINT[7], ADC AIN[7], AC AIN[3], PTC Y[5], SERCOM0 PAD[3], TCC1/WO[1], TCC3/WO[5], I2S SD[0].
13 PA08 bidirectional General-purpose I/O on VDDIO with NMI, ADC AIN[16], PTC X[0], SERCOM0/2 PAD[0], TCC0/WO[0], TCC1/WO[2], I2S SD[1]; supports I2C mode.
14 PA09 bidirectional General-purpose I/O on VDDIO with EXTINT[9], ADC AIN[17], PTC X[1], SERCOM0/2 PAD[1], TCC0/WO[1], TCC1/WO[3], I2S MCK[0]; supports I2C mode.
15 PA10 bidirectional General-purpose I/O on VDDIO with EXTINT[10], ADC AIN[18], PTC X[2], SERCOM0/2 PAD[2], TCC1/WO[0], TCC0/WO[2], I2S SCK[0], GCLK_IO[4].
16 PA11 bidirectional General-purpose I/O on VDDIO with EXTINT[11], ADC AIN[19], PTC X[3], SERCOM0/2 PAD[3], TCC1/WO[1], TCC0/WO[3], I2S FS[0], GCLK_IO[5].
17 VDDIO power_in Digital I/O supply input; operating voltage 1.62V to 3.63V for SAM D21.
18 GND power_in Ground for the digital I/O supply.
19 PB10 bidirectional General-purpose I/O on VDDIO with EXTINT[10], SERCOM4 PAD[2], TC5/WO[0], TCC0/WO[4], I2S MCK[1], GCLK_IO[4].
20 PB11 bidirectional General-purpose I/O on VDDIO with EXTINT[11], SERCOM4 PAD[3], TC5/WO[1], TCC0/WO[5], I2S SCK[1], GCLK_IO[5].
21 PA12 bidirectional General-purpose I/O on VDDIO with EXTINT[12], SERCOM2/4 PAD[0], TCC2/WO[0], TCC0/WO[6], AC CMP[0]; supports I2C mode.
22 PA13 bidirectional General-purpose I/O on VDDIO with EXTINT[13], SERCOM2/4 PAD[1], TCC2/WO[1], TCC0/WO[7], AC CMP[1]; supports I2C mode.
23 PA14 bidirectional General-purpose I/O on VDDIO with EXTINT[14], SERCOM2/4 PAD[2], TC3/WO[0], TCC0/WO[4], GCLK_IO[0]; also XIN for the crystal oscillator.
24 PA15 bidirectional General-purpose I/O on VDDIO with EXTINT[15], SERCOM2/4 PAD[3], TC3/WO[1], TCC0/WO[5], GCLK_IO[1]; also XOUT for the crystal oscillator.
25 PA16 bidirectional General-purpose I/O on VDDIO with EXTINT[0], PTC X[4], SERCOM1/3 PAD[0], TCC2/WO[0], TCC0/WO[6], GCLK_IO[2]; supports I2C mode.
26 PA17 bidirectional General-purpose I/O on VDDIO with EXTINT[1], PTC X[5], SERCOM1/3 PAD[1], TCC2/WO[1], TCC0/WO[7], GCLK_IO[3]; supports I2C mode.
27 PA18 bidirectional General-purpose I/O on VDDIO with EXTINT[2], PTC X[6], SERCOM1/3 PAD[2], TC3/WO[0], TCC0/WO[2], AC CMP[0].
28 PA19 bidirectional General-purpose I/O on VDDIO with EXTINT[3], PTC X[7], SERCOM1/3 PAD[3], TC3/WO[1], TCC0/WO[3], I2S SD[0], AC CMP[1].
29 PA20 bidirectional General-purpose I/O on VDDIO with EXTINT[4], PTC X[8], SERCOM5/3 PAD[2], TC7/WO[0], TCC0/WO[6], I2S SCK[0], GCLK_IO[4].
30 PA21 bidirectional General-purpose I/O on VDDIO with EXTINT[5], PTC X[9], SERCOM5/3 PAD[3], TC7/WO[1], TCC0/WO[7], I2S FS[0], GCLK_IO[5].
31 PA22 bidirectional General-purpose I/O on VDDIO with EXTINT[6], PTC X[10], SERCOM3/5 PAD[0], TC4/WO[0], TCC0/WO[4], GCLK_IO[6]; supports I2C mode.
32 PA23 bidirectional General-purpose I/O on VDDIO with EXTINT[7], PTC X[11], SERCOM3/5 PAD[1], TC4/WO[1], TCC0/WO[5], USB SOF 1kHz, GCLK_IO[7]; supports I2C mode.
33 PA24 bidirectional General-purpose I/O on VDDIO with EXTINT[12], SERCOM3/5 PAD[2], TC5/WO[0], TCC1/WO[2], USB DM; enable a pull-up if unconnected.
34 PA25 bidirectional General-purpose I/O on VDDIO with EXTINT[13], SERCOM3/5 PAD[3], TC5/WO[1], TCC1/WO[3], USB DP; enable a pull-up if unconnected.
35 GND power_in Ground for the digital I/O supply.
36 VDDIO power_in Digital I/O supply input; operating voltage 1.62V to 3.63V for SAM D21.
37 PB22 bidirectional General-purpose I/O on VDDIO with EXTINT[6], SERCOM5 PAD[2], TC7/WO[0], TCC3/WO[0], GCLK_IO[0].
38 PB23 bidirectional General-purpose I/O on VDDIO with EXTINT[7], SERCOM5 PAD[3], TC7/WO[1], TCC3/WO[1], GCLK_IO[1].
39 PA27 bidirectional General-purpose I/O on VDDIO with EXTINT[15], TCC3/WO[6], GCLK_IO[0].
40 RESET input Active-low external reset input.
41 PA28 bidirectional General-purpose I/O on VDDIO with EXTINT[8], TCC3/WO[7], GCLK_IO[0].
42 GND power_in Ground for the VDDIN input supply.
43 VDDCORE power_out Regulated core supply output from the internal voltage regulator.
44 VDDIN power_in Input supply for the internal voltage regulator; operating voltage 1.62V to 3.63V for SAM D21.
45 PA30 bidirectional General-purpose I/O on VDDIO with EXTINT[10], SERCOM1 PAD[2], TCC1/WO[0], TCC3/WO[4], GCLK_IO[0]; SWCLK for serial wire debug.
46 PA31 bidirectional General-purpose I/O on VDDIO with EXTINT[11], SERCOM1 PAD[3], TCC1/WO[1], TCC3/WO[5]; SWDIO for serial wire debug, active only with a debugger present.
47 PB02 bidirectional General-purpose I/O on VDDANA with EXTINT[2], ADC AIN[10], PTC Y[8], SERCOM5 PAD[0], TC6/WO[0], TCC3/WO[2].
48 PB03 bidirectional General-purpose I/O on VDDANA with EXTINT[3], ADC AIN[11], PTC Y[9], SERCOM5 PAD[1], TC6/WO[1], TCC3/WO[3].
49 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package QFN-48-EP(7x7)
Category Embedded Processors & Controllers
Pins 49

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 (SAM D21) VDD 1.62 3.63 V SAM D21: 1.62V, 3.63V 2
VDDIO supply voltage VDDIO 1.62 3.63 V Powers I/O lines, OSC8M and XOSC 35
VDDIN supply voltage VDDIN 1.62 3.63 V Powers I/O lines and the internal regulator 35
VDDANA supply voltage VDDANA 1.62 3.63 V Powers I/O lines and the ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K 35
Operating temperature (U grade) -40 85 °C U = -40 - 85°C Matte Sn Plating 16
CPU clock frequency Fmax 48 MHz Arm Cortex-M0+ CPU running at up to 48 MHz 1
Internal regulated core voltage VDDCORE 1.2 V Internal regulated voltage output 35

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. 859

CAD (KiCad official)

  • Symbol: ATSAMD21G17A-MUT
  • Footprint: Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm
  • 3D model: QFN-48-EP(7x7) (KiCad packages3D, STEP)
  • 3D model files: atsamd21g17a-mut-etched.step / atsamd21g17a-mut-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamd21g17a-mut.step / atsamd21g17a-mut.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (1148 pp, sha256 18ca1ccab5aa330f, 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