component
ATSAMD21G18A-AU
Public Made by Adomby adom
Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownATSAMD21G18A-AU
Microchip Tech · Microcontrollers (MCU/MPU/SOC) · TQFP-48(7x7)
ATSAMD21G18A-AU 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 digital I/O line PA00; this summary gives only the pin name and no electrical limits for it. |
| 2 | PA01 | bidirectional | Port A digital I/O line PA01; this summary gives only the pin name and no electrical limits for it. |
| 3 | PA02 | bidirectional | Port A digital I/O line PA02; this summary gives only the pin name and no electrical limits for it. |
| 4 | PA03 | bidirectional | Port A digital I/O line PA03; this summary gives only the pin name and no electrical limits for it. |
| 5 | GNDANA | power_in | Ground for the analog circuitry; this summary gives no voltage limits for it. |
| 6 | VDDANA | power_in | Supply for the analog circuitry; this summary gives no voltage limits for it. |
| 7 | PB08 | bidirectional | Port B digital I/O line PB08; this summary gives only the pin name and no electrical limits for it. |
| 8 | PB09 | bidirectional | Port B digital I/O line PB09; this summary gives only the pin name and no electrical limits for it. |
| 9 | PA04 | bidirectional | Port A digital I/O line PA04; this summary gives only the pin name and no electrical limits for it. |
| 10 | PA05 | bidirectional | Port A digital I/O line PA05; this summary gives only the pin name and no electrical limits for it. |
| 11 | PA06 | bidirectional | Port A digital I/O line PA06; this summary gives only the pin name and no electrical limits for it. |
| 12 | PA07 | bidirectional | Port A digital I/O line PA07; this summary gives only the pin name and no electrical limits for it. |
| 13 | PA08 | bidirectional | Port A digital I/O line PA08; this summary gives only the pin name and no electrical limits for it. |
| 14 | PA09 | bidirectional | Port A digital I/O line PA09; this summary gives only the pin name and no electrical limits for it. |
| 15 | PA10 | bidirectional | Port A digital I/O line PA10; this summary gives only the pin name and no electrical limits for it. |
| 16 | PA11 | bidirectional | Port A digital I/O line PA11; this summary gives only the pin name and no electrical limits for it. |
| 17 | VDDIO | power_in | I/O supply for the digital pins; this summary gives no voltage limits for it. |
| 18 | GND | power_in | Digital ground. |
| 19 | PB10 | bidirectional | Port B digital I/O line PB10; this summary gives only the pin name and no electrical limits for it. |
| 20 | PB11 | bidirectional | Port B digital I/O line PB11; this summary gives only the pin name and no electrical limits for it. |
| 21 | PA12 | bidirectional | Port A digital I/O line PA12; this summary gives only the pin name and no electrical limits for it. |
| 22 | PA13 | bidirectional | Port A digital I/O line PA13; this summary gives only the pin name and no electrical limits for it. |
| 23 | PA14 | bidirectional | Port A digital I/O line PA14; this summary gives only the pin name and no electrical limits for it. |
| 24 | PA15 | bidirectional | Port A digital I/O line PA15; this summary gives only the pin name and no electrical limits for it. |
| 25 | PA16 | bidirectional | Port A digital I/O line PA16; this summary gives only the pin name and no electrical limits for it. |
| 26 | PA17 | bidirectional | Port A digital I/O line PA17; this summary gives only the pin name and no electrical limits for it. |
| 27 | PA18 | bidirectional | Port A digital I/O line PA18; this summary gives only the pin name and no electrical limits for it. |
| 28 | PA19 | bidirectional | Port A digital I/O line PA19; this summary gives only the pin name and no electrical limits for it. |
| 29 | PA20 | bidirectional | Port A digital I/O line PA20; this summary gives only the pin name and no electrical limits for it. |
| 30 | PA21 | bidirectional | Port A digital I/O line PA21; the name is taken from a stray label on the page because the printed pin 30 label is missing in the extracted text. |
| 31 | PA22 | bidirectional | Port A digital I/O line PA22; this summary gives only the pin name and no electrical limits for it. |
| 32 | PA23 | bidirectional | Port A digital I/O line PA23; this summary gives only the pin name and no electrical limits for it. |
| 33 | PA24 | bidirectional | Port A digital I/O line PA24; this summary gives only the pin name and no electrical limits for it. |
| 34 | PA25 | bidirectional | Port A digital I/O line PA25; this summary gives only the pin name and no electrical limits for it. |
| 35 | GND | power_in | Digital ground. |
| 36 | VDDIO | power_in | I/O supply for the digital pins; this summary gives no voltage limits for it. |
| 37 | PB22 | bidirectional | Port B digital I/O line PB22; this summary gives only the pin name and no electrical limits for it. |
| 38 | PB23 | bidirectional | Port B digital I/O line PB23; this summary gives only the pin name and no electrical limits for it. |
| 39 | PA27 | bidirectional | Port A digital I/O line PA27; this summary gives only the pin name and no electrical limits for it. |
| 40 | RESET | input | Reset pin of the device; this summary gives no polarity or electrical limits for it. |
| 41 | PA28 | bidirectional | Port A digital I/O line PA28; this summary gives only the pin name and no electrical limits for it. |
| 42 | GND | power_in | Digital ground. |
| 43 | VDDCORE | power_out | Core supply pin, which the legend marks as a regulated output supply; this summary gives no voltage limits for it. |
| 44 | VDDIN | power_in | Input supply pin for the device; this summary gives no voltage limits for it. |
| 45 | PA30 | bidirectional | Port A digital I/O line PA30; this summary gives only the pin name and no electrical limits for it. |
| 46 | PA31 | bidirectional | Port A digital I/O line PA31; this summary gives only the pin name and no electrical limits for it. |
| 47 | PB02 | bidirectional | Port B digital I/O line PB02; this summary gives only the pin name and no electrical limits for it. |
| 48 | PB03 | bidirectional | Port B digital I/O line PB03; this summary gives only the pin name and no electrical limits for it. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
ATSAMD21G18A-AU - Footprint:
Package_QFP:TQFP-48_7x7mm_P0.5mm - 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
atsamd21g18a-au-etched.step/atsamd21g18a-au-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atsamd21g18a-au.step/atsamd21g18a-au.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (60 pp, sha256
786b60951d0bb37e, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).