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ATSAMD21G17A-MU

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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-mufactory-2.0.0extractor-text

Verified ATSAMD21G17A-MU

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, 49 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAMD21G17A-MU · QFN-48-EP(7x7) · 49 pins
  • ✓copper: 49 copper pads, none touching another net
  • ✓datasheet: all 49 pin names found in the 1153-page datasheet
  • ✓distributor: lcsc C1338611, digikey ATSAMD21G17A-MU-ND, mouser 556-ATSAMD21G17A-MU
  • ✓family: QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-xmfz1mdg/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.1077)
  • ✓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-mu.kicad_sym✓ atsamd21g17a-mu.kicad_mod✓ atsamd21g17a-mu.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 5d ago
viewers atsamd21g17a-mu: viewers · Ray 5d ago
atsamd21g17a-mu-etched.glb Publish 0.1.0 · Ray 5d ago
atsamd21g17a-mu-etched.step atsamd21g17a-mu: factory component page (tier=mfr) · Ray 5d ago
atsamd21g17a-mu-hero.glb atsamd21g17a-mu: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
atsamd21g17a-mu-hero.overlay.json Publish 0.1.0 · Ray 5d ago
atsamd21g17a-mu.glb Publish 0.1.0 · Ray 5d ago
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atsamd21g17a-mu.kicad_sym Publish 0.1.0 · Ray 5d ago
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atsamd21g17a-mu.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, 49 pins · Ray 5d ago

ATSAMD21G17A-MU

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

ATSAMD21G17A-MU 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 Port A I/O pin PA00 powered from VDDANA; can be used as external interrupt EXTINT[0] or as the 32 kHz crystal input XIN32 when XOSC32K is enabled.
2 PA01 bidirectional Port A I/O pin PA01 powered from VDDANA; can be used as external interrupt EXTINT[1] or as the 32 kHz crystal output XOUT32 when XOSC32K is enabled.
3 PA02 bidirectional Port A I/O pin PA02 powered from VDDANA; provides analog input AIN[0] and DAC output VOUT, or external interrupt EXTINT[2] (analog functions require peripheral function B to be selected).
4 PA03 bidirectional Port A I/O pin PA03 powered from VDDANA; provides analog input AIN[1] and external reference VREFA, or external interrupt EXTINT[3] (analog functions require peripheral function B to be selected).
5 GNDANA power_in Ground for the analog domain (ADC, DAC, analog comparators and related analog pins).
6 VDDANA power_in Analog supply for the analog pins and analog peripherals; the SAM D21 operating voltage range is 1.62V - 3.63V.
7 PB08 bidirectional Port B I/O pin PB08 powered from VDDANA; provides analog input AIN[2], external interrupt EXTINT[8], SERCOM4 pad 0 and TC4 waveform output 0.
8 PB09 bidirectional Port B I/O pin PB09 powered from VDDANA; provides analog input AIN[3], external interrupt EXTINT[9], SERCOM4 pad 1 and TC4 waveform output 1.
9 PA04 bidirectional Port A I/O pin PA04 powered from VDDANA; provides analog input AIN[4], ADC external reference VREFB, external interrupt EXTINT[4] and SERCOM0 pad 0.
10 PA05 bidirectional Port A I/O pin PA05 powered from VDDANA; provides analog input AIN[5], external interrupt EXTINT[5] and SERCOM0 pad 1.
11 PA06 bidirectional Port A I/O pin PA06 powered from VDDANA; provides analog input AIN[6], external interrupt EXTINT[6] and SERCOM0 pad 2.
12 PA07 bidirectional Port A I/O pin PA07 powered from VDDANA; provides analog input AIN[7], external interrupt EXTINT[7] and SERCOM0 pad 3.
13 PA08 bidirectional Port A I/O pin PA08 powered from VDDIO; can be used as non-maskable interrupt NMI, analog input AIN[16], SERCOM0/SERCOM2 pad 0 or I2S SD[0].
14 PA09 bidirectional Port A I/O pin PA09 powered from VDDIO; can be used as external interrupt EXTINT[9], analog input AIN[17], SERCOM0/SERCOM2 pad 1 or I2S SD[1].
15 PA10 bidirectional Port A I/O pin PA10 powered from VDDIO; can be used as external interrupt EXTINT[10], analog input AIN[18], SERCOM0/SERCOM2 pad 2 or TCC1 waveform output 0.
16 PA11 bidirectional Port A I/O pin PA11 powered from VDDIO; can be used as external interrupt EXTINT[11], analog input AIN[19], SERCOM0/SERCOM2 pad 3 or TCC1 waveform output 1.
17 VDDIO power_in Digital I/O supply for the pin group it serves; the SAM D21 operating voltage range is 1.62V - 3.63V.
18 GND power_in Ground reference for the digital I/O and core domain.
19 PB10 bidirectional Port B I/O pin PB10 powered from VDDIO; can be used as external interrupt EXTINT[10], SERCOM4 pad 2, TC5 waveform output 0 or TCC0 waveform output 4.
20 PB11 bidirectional Port B I/O pin PB11 powered from VDDIO; can be used as external interrupt EXTINT[11], SERCOM4 pad 3, TC5 waveform output 1 or TCC0 waveform output 5.
21 PA12 bidirectional Port A I/O pin PA12 powered from VDDIO; can be used as external interrupt EXTINT[12], SERCOM2/SERCOM4 pad 0, TCC2 waveform output 0 or analog comparator output CMP[0].
22 PA13 bidirectional Port A I/O pin PA13 powered from VDDIO; can be used as external interrupt EXTINT[13], SERCOM2/SERCOM4 pad 1, TCC2 waveform output 1 or analog comparator output CMP[1].
23 PA14 bidirectional Port A I/O pin PA14 powered from VDDIO; can be used as external interrupt EXTINT[14], SERCOM2/SERCOM4 pad 2, TC3 waveform output 0 or GCLK_IO[0], and as crystal input XIN when XOSC is enabled.
24 PA15 bidirectional Port A I/O pin PA15 powered from VDDIO; can be used as external interrupt EXTINT[15], SERCOM2/SERCOM4 pad 3, TC3 waveform output 1 or GCLK_IO[1], and as crystal output XOUT when XOSC is enabled.
25 PA16 bidirectional Port A I/O pin PA16 powered from VDDIO; can be used as external interrupt EXTINT[0], SERCOM1/SERCOM3 pad 0, TCC2 waveform output 0 or GCLK_IO[2].
26 PA17 bidirectional Port A I/O pin PA17 powered from VDDIO; can be used as external interrupt EXTINT[1], SERCOM1/SERCOM3 pad 1, TCC2 waveform output 1 or GCLK_IO[3].
27 PA18 bidirectional Port A I/O pin PA18 powered from VDDIO; can be used as external interrupt EXTINT[2], SERCOM1/SERCOM3 pad 2, TC3 waveform output 0 or analog comparator output CMP[0].
28 PA19 bidirectional Port A I/O pin PA19 powered from VDDIO; can be used as external interrupt EXTINT[3], SERCOM1/SERCOM3 pad 3, TC3 waveform output 1 or analog comparator output CMP[1].
29 PA20 bidirectional Port A I/O pin PA20 powered from VDDIO; can be used as external interrupt EXTINT[4], SERCOM5/SERCOM3 pad 2, TC7 waveform output 0 or GCLK_IO[4].
30 PA21 bidirectional Port A I/O pin PA21 powered from VDDIO; can be used as external interrupt EXTINT[5], SERCOM5/SERCOM3 pad 3, TC7 waveform output 1 or GCLK_IO[5].
31 PA22 bidirectional Port A I/O pin PA22 powered from VDDIO; can be used as external interrupt EXTINT[6], SERCOM3/SERCOM5 pad 0, TC4 waveform output 0 or GCLK_IO[6], and supports SERCOM I2C.
32 PA23 bidirectional Port A I/O pin PA23 powered from VDDIO; can be used as external interrupt EXTINT[7], SERCOM3/SERCOM5 pad 1, TC4 waveform output 1, USB SOF 1kHz or GCLK_IO[7], and supports SERCOM I2C.
33 PA24 bidirectional Port A I/O pin PA24 powered from VDDIO; carries USB DM and can be used as external interrupt EXTINT[12], SERCOM3/SERCOM5 pad 2 or TC5 waveform output 0; a pull-up is recommended if the pin is unconnected to avoid extra power consumption (<1mA).
34 PA25 bidirectional Port A I/O pin PA25 powered from VDDIO; carries USB DP and can be used as external interrupt EXTINT[13], SERCOM3/SERCOM5 pad 3 or TC5 waveform output 1; a pull-up is recommended if the pin is unconnected to avoid extra power consumption (<1mA).
35 GND power_in Ground reference for the digital I/O and core domain.
36 VDDIO power_in Digital I/O supply for the pin group it serves; the SAM D21 operating voltage range is 1.62V - 3.63V.
37 PB22 bidirectional Port B I/O pin PB22 powered from VDDIO; can be used as external interrupt EXTINT[6], SERCOM5 pad 2, TC7 waveform output 0, TCC3 waveform output 0 or GCLK_IO[0].
38 PB23 bidirectional Port B I/O pin PB23 powered from VDDIO; can be used as external interrupt EXTINT[7], SERCOM5 pad 3, TC7 waveform output 1, TCC3 waveform output 1 or GCLK_IO[1].
39 PA27 bidirectional Port A I/O pin PA27 powered from VDDIO; can be used as external interrupt EXTINT[15], TCC3 waveform output 6 or GCLK_IO[0].
40 RESET input External active-low reset input for the device.
41 PA28 bidirectional Port A I/O pin PA28 powered from VDDIO; can be used as external interrupt EXTINT[8], TCC3 waveform output 7 or GCLK_IO[0].
42 GND power_in Ground reference for the digital I/O and core domain.
43 VDDCORE power_out Regulated output supply of the internal voltage regulator that feeds the device core.
44 VDDIN power_in Input supply to the internal voltage regulator; the SAM D21 operating voltage range is 1.62V - 3.63V.
45 PA30 bidirectional Port A I/O pin PA30 powered from VDDIO; carries the SWCLK debug clock and can also be used as external interrupt EXTINT[10], SERCOM1 pad 2, TCC1 waveform output 0, TCC3 waveform output 4 or GCLK_IO[0].
46 PA31 bidirectional Port A I/O pin PA31 powered from VDDIO; carries SWDIO (active only when a debugger is present) and can also be used as external interrupt EXTINT[11], SERCOM1 pad 3, TCC1 waveform output 1 or TCC3 waveform output 5.
47 PB02 bidirectional Port B I/O pin PB02 powered from VDDANA; provides analog input AIN[10], external interrupt EXTINT[2], SERCOM5 pad 0, TC6 waveform output 0 and TCC3 waveform output 2.
48 PB03 bidirectional Port B I/O pin PB03 powered from VDDANA; provides analog input AIN[11], external interrupt EXTINT[3], SERCOM5 pad 1, TC6 waveform output 1 and TCC3 waveform output 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, VDDIO pin (I/O lines, OSC8M, XOSC) VDDIO 1.62 3.63 V 35
Operating voltage, VDDIN pin (I/O lines and internal regulator) VDDIN 1.62 3.63 V 35
Operating voltage, VDDANA pin (I/O lines, ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K) VDDANA 1.62 3.63 V 35
Single main supply range, common VDD for VDDIN, VDDIO and VDDANA VDD 1.62 3.63 V Same voltage applied to VDDIN, VDDIO and VDDANA 36
Operating temperature range, ordering grade U (-40 - 85°C Matte Sn Plating) -40 85 °C Ordering code suffix U (package grade in MPN ATSAMD21G17A-MU) 16

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-MU
  • 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-mu-etched.step / atsamd21g17a-mu-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamd21g17a-mu.step / atsamd21g17a-mu.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (1153 pp, sha256 98766371fd0886dd, 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