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ATSAML21G17B-AUT

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatsaml21g17b-autfactory-2.0.0extractor-text

Verified ATSAML21G17B-AUT

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, 48 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAML21G17B-AUT · TQFP-48(7x7) · 48 pins
  • ✓copper: 48 copper pads, none touching another net
  • ✓datasheet: all 48 pin names found in the 1158-page datasheet
  • ✓distributor: lcsc C2053354, digikey ATSAML21G17B-AUTTR-ND, mouser 556-ATSAML21G17B-AUT
  • ✓family: TQFP-48_7x7mm_P0.5mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-kj8yxl_x/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: 48 pins = 48 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 48 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsaml21g17b-aut.kicad_sym✓ atsaml21g17b-aut.kicad_mod✓ atsaml21g17b-aut.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 atsaml21g17b-aut: viewers · Ray 5d ago
atsaml21g17b-aut-etched.glb Publish 0.1.0 · Ray 5d ago
atsaml21g17b-aut-etched.step atsaml21g17b-aut: factory component page (tier=mfr) · Ray 5d ago
atsaml21g17b-aut-hero.glb atsaml21g17b-aut: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
atsaml21g17b-aut-hero.overlay.json Publish 0.1.0 · Ray 5d ago
atsaml21g17b-aut.glb Publish 0.1.0 · Ray 5d ago
atsaml21g17b-aut.kicad_mod Publish 0.1.0 · Ray 5d ago
atsaml21g17b-aut.kicad_sym Publish 0.1.0 · Ray 5d ago
atsaml21g17b-aut.lbr Publish 0.1.0 · Ray 5d ago
atsaml21g17b-aut.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, 48 pins · Ray 5d ago

ATSAML21G17B-AUT

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-48(7x7)

ATSAML21G17B-AUT from Microchip Tech, in a TQFP-48(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 GPIO pin PA00, a Backup pin powered from VSWOUT; it can also serve as XIN32 (32 kHz crystal input), EXTINT[0]/EXTWAKE[0] and SERCOM1 PAD[0].
2 PA01 bidirectional Port A GPIO pin PA01, a Backup pin powered from VSWOUT; it can also serve as XOUT32 (32 kHz crystal output), EXTINT[1]/EXTWAKE[1] and SERCOM1 PAD[1].
3 PA02 bidirectional Port A GPIO pin PA02, powered from VDDANA; alternate analog functions include AIN[0], Y[0], VOUT[0] and OA_NEG[0], and it is a static neighbour pin for XOSC32K jitter minimization.
4 PA03 bidirectional Port A GPIO pin PA03, powered from VDDANA; alternate analog functions include VREFA, AIN[1] and Y[1], and it is a static neighbour pin for XOSC32K jitter minimization.
5 GNDANA power_in Ground for the analog power domain.
6 VDDANA power_in Analog supply voltage, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors and recommended to be filtered from VDD with a ferrite bead.
7 PB08 bidirectional Port B GPIO pin PB08, powered from VDDANA; alternate functions include AIN[2], OA_OUT[1], SERCOM4 PAD[0] and TC0/WO[0].
8 PB09 bidirectional Port B GPIO pin PB09, powered from VDDANA; alternate functions include AIN[3], Y[15], OA_POS[1], SERCOM4 PAD[1] and TC0/WO[1].
9 PA04 bidirectional Port A GPIO pin PA04, powered from VDDANA; alternate functions include VREFB, AIN[4], AIN[0], OA_OUT[2], SERCOM0 PAD[0] and TCC0/WO[0].
10 PA05 bidirectional Port A GPIO pin PA05, powered from VDDANA; alternate functions include AIN[5], AIN[1], VOUT[1], OA_POS[2], SERCOM0 PAD[1] and TCC0/WO[1].
11 PA06 bidirectional Port A GPIO pin PA06, powered from VDDANA; alternate functions include AIN[6], AIN[2], Y[4], OA_POS[0], SERCOM0 PAD[2] and TCC1/WO[0].
12 PA07 bidirectional Port A GPIO pin PA07, powered from VDDANA; alternate functions include AIN[7], AIN[3], OA_OUT[0], SERCOM0 PAD[3] and TCC1/WO[1].
13 PA08 bidirectional Port A GPIO pin PA08, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including NMI, AIN[16], X[0], Y[6] and TCC0/WO[0].
14 PA09 bidirectional Port A GPIO pin PA09, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[9], AIN[17], X[1], Y[7] and TCC0/WO[1].
15 PA10 bidirectional Port A GPIO pin PA10, powered from VDDIO; alternate functions include EXTINT[10], AIN[18], X[2], Y[8], SERCOM0 PAD[2] and GCLK_IO[4].
16 PA11 bidirectional Port A GPIO pin PA11, powered from VDDIO; alternate functions include EXTINT[11], AIN[19], X[3], Y[9], SERCOM0 PAD[3] and GCLK_IO[5].
17 VDDIO power_in Digital I/O supply voltage, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors.
18 GND power_in Digital ground.
19 PB10 bidirectional Port B GPIO pin PB10, powered from VDDIO; alternate functions include EXTINT[10], Y[2], SERCOM4 PAD[2], TC1/WO[0] and GCLK_IO[4].
20 PB11 bidirectional Port B GPIO pin PB11, powered from VDDIO; alternate functions include EXTINT[11], Y[3], SERCOM4 PAD[3], TC1/WO[1] and GCLK_IO[5].
21 PA12 bidirectional Port A GPIO pin PA12, powered from VDDIO; alternate functions include EXTINT[12], SERCOM2 PAD[0], SERCOM4 PAD[0], TCC2/WO[0] and AC/CMP[0], and it supports SERCOM I2C with output low-level current limited to 2.5 mA in Sm/Fm mode at VOL = 0.4 V.
22 PA13 bidirectional Port A GPIO pin PA13, powered from VDDIO; alternate functions include EXTINT[13], SERCOM2 PAD[1], SERCOM4 PAD[1], TCC2/WO[1] and AC/CMP[1], and it supports SERCOM I2C with output low-level current limited to 2.5 mA in Sm/Fm mode at VOL = 0.4 V.
23 PA14 bidirectional Port A GPIO pin PA14, powered from VDDIO; it can serve as XIN (external crystal or clock input for the main oscillator) and also as EXTINT[14], SERCOM2 PAD[2], SERCOM4 PAD[2], TC4/WO[0] and GCLK_IO[0].
24 PA15 bidirectional Port A GPIO pin PA15, powered from VDDIO; it can serve as XOUT (crystal output of the main oscillator) and also as EXTINT[15], SERCOM2 PAD[3], SERCOM4 PAD[3], TC4/WO[1] and GCLK_IO[1].
25 PA16 bidirectional Port A GPIO pin PA16, powered from VDDIO; alternate functions include EXTINT[0], X[4], SERCOM1 PAD[0], SERCOM3 PAD[0], TCC2/WO[0] and GCLK_IO[2], and it supports SERCOM I2C.
26 PA17 bidirectional Port A GPIO pin PA17, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[1], X[5], SERCOM1 PAD[1], SERCOM3 PAD[1] and GCLK_IO[3].
27 PA18 bidirectional Port A GPIO pin PA18, powered from VDDIO; alternate functions include EXTINT[2], X[6], SERCOM1 PAD[2], SERCOM3 PAD[2], TC4/WO[0] and AC/CMP[0].
28 PA19 bidirectional Port A GPIO pin PA19, powered from VDDIO; alternate functions include EXTINT[3], X[7], SERCOM1 PAD[3], SERCOM3 PAD[3], TC4/WO[1] and AC/CMP[1].
29 PA20 bidirectional Port A GPIO pin PA20, powered from VDDIO; alternate functions include EXTINT[4], X[8], SERCOM5 PAD[2], SERCOM3 PAD[2], TC3/WO[0] and GCLK_IO[4].
30 PA21 bidirectional Port A GPIO pin PA21, powered from VDDIO; alternate functions include EXTINT[5], X[9], SERCOM5 PAD[3], SERCOM3 PAD[3], TC3/WO[1] and GCLK_IO[5].
31 PA22 bidirectional Port A GPIO pin PA22, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[6], X[10], SERCOM3 PAD[0], SERCOM5 PAD[0] and TC0/WO[0].
32 PA23 bidirectional Port A GPIO pin PA23, powered from VDDIO; it is a High Sink pin and supports SERCOM I2C, with alternate functions including EXTINT[7], X[11], SERCOM3 PAD[1], SERCOM5 PAD[1], USB SOF 1 kHz and GCLK_IO[7].
33 PA24 bidirectional Port A GPIO pin PA24, powered from VDDIO; alternate functions include EXTINT[12], SERCOM3 PAD[2], SERCOM5 PAD[2], TC1/WO[0], TCC1/WO[2] and USB DM; its internal pull resistor is 50 to 150 kΩ.
34 PA25 bidirectional Port A GPIO pin PA25, powered from VDDIO; alternate functions include EXTINT[13], SERCOM3 PAD[3], SERCOM5 PAD[3], TC1/WO[1], TCC1/WO[3] and USB DP; its internal pull resistor is 50 to 150 kΩ.
35 GND power_in Digital ground.
36 VDDIO power_in Digital I/O supply voltage, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors.
37 PB22 bidirectional Port B GPIO pin PB22, powered from VDDIN; alternate functions include EXTINT[6], SERCOM5 PAD[2], TC3/WO[0], GCLK_IO[0] and CCL0 IN[0].
38 PB23 bidirectional Port B GPIO pin PB23, powered from VDDIN; alternate functions include EXTINT[7], SERCOM5 PAD[3], TC3/WO[1], GCLK_IO[1] and CCL0 OUT.
39 PA27 bidirectional Port A GPIO pin PA27, powered from VDDIN; it is a High Sink pin with alternate functions including EXTINT[15] and GCLK_IO[0].
40 RESET input External reset input (active low) with an internal pull-up resistor; the low-level threshold is below 0.33×VDDIO for VDDIO 1.6-2.0 V and below 0.36×VDDIO for VDDIO 2.7-3.6 V.
41 VSW power_out On-chip switching-mode regulator output, connected to VDDCORE through a 10 µH inductor with saturation current above 150 mA and DCR below 1 Ω; not connected in linear regulator mode.
42 GND power_in Digital ground.
43 VDDCORE power_in Core supply, 0.9 V to 1.2 V typical; it is the core voltage output with a 1 µF decoupling capacitor in linear regulator mode, and the core supply input connected to VSW through the inductor in switched regulator mode.
44 VDDIN power_in Input supply for the regulator and the VDDIN-powered I/O domain, 1.6 V to 3.6 V, decoupled with 100 nF and 10 µF capacitors.
45 PA30 bidirectional Port A GPIO pin PA30, powered from VDDIN; it carries the SWCLK debug clock input (active when the debugger is connected, with a 1 kΩ pull-up recommended) and also EXTINT[10], SERCOM1 PAD[2], TCC1/WO[0] and GCLK_IO[0].
46 PA31 bidirectional Port A GPIO pin PA31, powered from VDDIN; it carries the SWDIO debug data pin (activated when a debugger is present) and is a High Sink pin with alternate functions including EXTINT[11], SERCOM1 PAD[3] and TCC1/WO[1].
47 PB02 bidirectional Port B GPIO pin PB02, a Backup pin powered from VSWOUT; alternate functions include EXTINT[2], AIN[10], SERCOM5 PAD[0], TC2/WO[0] and CCL0 OUT, and it is the SUPC OUT[1] function.
48 PB03 bidirectional Port B GPIO pin PB03, a Backup pin powered from VSWOUT; alternate functions include EXTINT[3], AIN[11], SERCOM5 PAD[1] and TC2/WO[1], and it is the VBAT (external battery supply) input when used by the Supply Controller.

Key specifications

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

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 temperature range (ordering code -AUT, TQFP48) -40 85 °C Ordering code ATSAML21G17B-AUT (Tape & Reel), -40°C to 85°C grade 17
Supply voltage range (main supply / IOs supply, power supply connection figures) 1.62 3.63 V Figure 9-1 power supply connection (linear mode); same range annotated in Figures 9-2 and 9-3 on pages 38-39 38
Maximum CPU frequency fCPU 48 MHz Configuration summary for SAM L21 family (G variant listed); no separate condition printed 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 indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In self-capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor. 1034

CAD (KiCad official)

  • Symbol: ATSAML21G17B-AUT
  • Footprint: Package_QFP:TQFP-48_7x7mm_P0.5mm
  • 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: atsaml21g17b-aut-etched.step / atsaml21g17b-aut-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsaml21g17b-aut.step / atsaml21g17b-aut.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (1158 pp, sha256 c7ade1efde79dc98, 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