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ATSAMD20G18A-AN

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

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Contents

README

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ATSAMD20G18A-AN

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

ATSAMD20G18A-AN 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 General-purpose I/O pin PA00 (port A, bit 0); the summary gives no electrical limits or alternate functions for this pin.
2 PA01 bidirectional General-purpose I/O pin PA01 (port A, bit 1); the summary gives no electrical limits or alternate functions for this pin.
3 PA02 bidirectional General-purpose I/O pin PA02 (port A, bit 2); the summary gives no electrical limits or alternate functions for this pin.
4 PA03 bidirectional General-purpose I/O pin PA03 (port A, bit 3); the summary gives no electrical limits or alternate functions for this pin.
5 GNDANA power_in Ground reference for the analog domain; the summary gives no voltage limit for this pin.
6 VDDANA power_in Analog supply pin; the summary gives no separate limit for it, only the device operating range of 1.62V to 3.63V.
7 PB08 bidirectional General-purpose I/O pin PB08 (port B, bit 8); the summary gives no electrical limits or alternate functions for this pin.
8 PB09 bidirectional General-purpose I/O pin PB09 (port B, bit 9); the summary gives no electrical limits or alternate functions for this pin.
9 PA04 bidirectional General-purpose I/O pin PA04 (port A, bit 4); the summary gives no electrical limits or alternate functions for this pin.
10 PA05 bidirectional General-purpose I/O pin PA05 (port A, bit 5); the summary gives no electrical limits or alternate functions for this pin.
11 PA06 bidirectional General-purpose I/O pin PA06 (port A, bit 6); the summary gives no electrical limits or alternate functions for this pin.
12 PA07 bidirectional General-purpose I/O pin PA07 (port A, bit 7); the summary gives no electrical limits or alternate functions for this pin.
13 PA08 bidirectional General-purpose I/O pin PA08 (port A, bit 8); the summary gives no electrical limits or alternate functions for this pin.
14 PA09 bidirectional General-purpose I/O pin PA09 (port A, bit 9); the summary gives no electrical limits or alternate functions for this pin.
15 PA10 bidirectional General-purpose I/O pin PA10 (port A, bit 10); the summary gives no electrical limits or alternate functions for this pin.
16 PA11 bidirectional General-purpose I/O pin PA11 (port A, bit 11); the summary gives no electrical limits or alternate functions for this pin.
17 VDDIO power_in I/O supply pin for the digital pin ring; the summary gives no separate limit for it, only the device operating range of 1.62V to 3.63V.
18 GND power_in Digital ground pin; the summary gives no further electrical limits for it.
19 PB10 bidirectional General-purpose I/O pin PB10 (port B, bit 10); the summary gives no electrical limits or alternate functions for this pin.
20 PB11 bidirectional General-purpose I/O pin PB11 (port B, bit 11); the summary gives no electrical limits or alternate functions for this pin.
21 PA12 bidirectional General-purpose I/O pin PA12 (port A, bit 12); the summary gives no electrical limits or alternate functions for this pin.
22 PA13 bidirectional General-purpose I/O pin PA13 (port A, bit 13); the summary gives no electrical limits or alternate functions for this pin.
23 PA14 bidirectional General-purpose I/O pin PA14 (port A, bit 14); the summary gives no electrical limits or alternate functions for this pin.
24 PA15 bidirectional General-purpose I/O pin PA15 (port A, bit 15); the summary gives no electrical limits or alternate functions for this pin.
25 PA16 bidirectional General-purpose I/O pin PA16 (port A, bit 16); the summary gives no electrical limits or alternate functions for this pin.
26 PA17 bidirectional General-purpose I/O pin PA17 (port A, bit 17); the summary gives no electrical limits or alternate functions for this pin.
27 PA18 bidirectional General-purpose I/O pin PA18 (port A, bit 18); the summary gives no electrical limits or alternate functions for this pin.
28 PA19 bidirectional General-purpose I/O pin PA19 (port A, bit 19); the summary gives no electrical limits or alternate functions for this pin.
29 PA20 bidirectional General-purpose I/O pin PA20 (port A, bit 20); the summary gives no electrical limits or alternate functions for this pin.
30 PA21 bidirectional General-purpose I/O pin PA21 (port A, bit 21); the summary gives no electrical limits or alternate functions for this pin.
31 PA22 bidirectional General-purpose I/O pin PA22 (port A, bit 22); the summary gives no electrical limits or alternate functions for this pin.
32 PA23 bidirectional General-purpose I/O pin PA23 (port A, bit 23); the summary gives no electrical limits or alternate functions for this pin.
33 PA24 bidirectional General-purpose I/O pin PA24 (port A, bit 24); the summary gives no electrical limits or alternate functions for this pin.
34 PA25 bidirectional General-purpose I/O pin PA25 (port A, bit 25); the summary gives no electrical limits or alternate functions for this pin.
35 GND power_in Digital ground pin; the summary gives no further electrical limits for it.
36 VDDIO power_in I/O supply pin for the digital pin ring; the summary gives no separate limit for it, only the device operating range of 1.62V to 3.63V.
37 PB22 bidirectional General-purpose I/O pin PB22 (port B, bit 22); the summary gives no electrical limits or alternate functions for this pin.
38 PB23 bidirectional General-purpose I/O pin PB23 (port B, bit 23); the summary gives no electrical limits or alternate functions for this pin.
39 PA27 bidirectional General-purpose I/O pin PA27 (port A, bit 27); the summary gives no electrical limits or alternate functions for this pin.
40 RESET input Reset pin as labeled in the pinout legend (RESET PIN); the summary gives no polarity, threshold or timing for it.
41 PA28 bidirectional General-purpose I/O pin PA28 (port A, bit 28); the summary gives no electrical limits or alternate functions for this pin.
42 GND power_in Digital ground pin; the summary gives no further electrical limits for it.
43 VDDCORE power_out Regulated core supply pin as labeled in the pinout legend (regulated output supply); the summary gives no output voltage or decoupling value.
44 VDDIN power_in Input supply pin feeding the internal regulator; the summary gives no separate limit for it, only the device operating range of 1.62V to 3.63V.
45 PA30 bidirectional General-purpose I/O pin PA30 (port A, bit 30); the summary gives no electrical limits or alternate functions for this pin.
46 PA31 bidirectional General-purpose I/O pin PA31 (port A, bit 31); the summary gives no electrical limits or alternate functions for this pin.
47 PB02 bidirectional General-purpose I/O pin PB02 (port B, bit 2); the summary gives no electrical limits or alternate functions for this pin.
48 PB03 bidirectional General-purpose I/O pin PB03 (port B, bit 3); the summary gives no electrical limits or alternate functions for this pin.

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 Voltage 1.62 3.63 V 2
Operating temperature, package grade N (-40 to 105 °C, matte Sn plating) -40 105 °C Ordering suffix -AN, package grade N 6
Thermal resistance, junction-to-ambient, 48-pin TQFP θJA 78.8 °C/W 48-pin TQFP 39
Thermal resistance, junction-to-case, 48-pin TQFP θJC 12.3 °C/W 48-pin TQFP 39

CAD (KiCad official)

  • Symbol: ATSAMD20G18A-AN
  • Footprint: Package_QFP:TQFP-48_7x7mm_P0.5mm
  • 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: atsamd20g18a-an-etched.step / atsamd20g18a-an-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamd20g18a-an.step / atsamd20g18a-an.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (51 pp, sha256 8b1a1ff73fd4e2e8, retrieved 2026-10-28, 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