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ATSAMG55J19B-AU

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Microchip Tech Pre-ordered MCUs, LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatsamg55j19b-aufactory-2.0.0extractor-text

Verified ATSAMG55J19B-AU

by Ray · last 31 Oct 2026 · 1 record · files match
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Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 64 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAMG55J19B-AU · LQFP-64(10x10) · 64 pins
  • ✓copper: 64 copper pads, none touching another net
  • ✓datasheet: all 64 pin names found in the 16-page datasheet
  • ✓distributor: lcsc C1340051, digikey ATSAMG55J19B-AU-ND, mouser 556-ATSAMG55J19B-AU
  • ✓family: LQFP-64_10x10mm_P0.5mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-87077dlo/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: 64 pins = 64 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 64 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsamg55j19b-au.kicad_sym✓ atsamg55j19b-au.kicad_mod✓ atsamg55j19b-au.step
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Contents

README

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ATSAMG55J19B-AU

Microchip Tech · Pre-ordered MCUs · LQFP-64(10x10)

ATSAMG55J19B-AU from Microchip Tech, in a LQFP-64(10x10). 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 VDDIO power_in Peripheral I/O line, voltage regulator and ADC power supply, operating from 1.62V to 3.6V.
2 NRST bidirectional Microcontroller reset I/O, active low with an internal pull-up resistor, powered from VDDIO.
3 PB12 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
4 PA4 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset, with no pull-down on this pin.
5 PA3 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset, with no pull-down on this pin.
6 PA0 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
7 PA1 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
8 PA5 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
9 VDDCORE power_in Core chip power supply, connected externally to VDDOUT or VDDCOREXT100 or VDDCOREXT120.
10 TEST input Test mode select input with pull-down resistor, powered from VDDIO.
11 PA7 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
12 PA8 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
13 GND power_in Ground reference.
14 PB15 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
15 PB14 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
16 PA31 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
17 PA6 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
18 PA16 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
19 PA30 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
20 PA29 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
21 PA28 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
22 PA15 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
23 PA23 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
24 PA22 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
25 PA21 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
26 VDDUSB power_in USB power supply, available only on the 64-pin package.
27 VDDIO power_in Peripheral I/O line, voltage regulator and ADC power supply, operating from 1.62V to 3.6V.
28 ADVREF input ADC voltage reference input, available only on the 64-pin package.
29 GND power_in Ground reference.
30 VDDOUT power_out Voltage regulator output, operating from 1.08V to 1.32V.
31 VDDIO power_in Peripheral I/O line, voltage regulator and ADC power supply, operating from 1.62V to 3.6V.
32 VDDIO power_in Peripheral I/O line, voltage regulator and ADC power supply, operating from 1.62V to 3.6V.
33 PA17 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
34 PA18 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
35 PA19 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
36 PA20 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
37 PB0 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
38 PB1 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
39 PB2 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
40 PB3 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
41 PA14 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset, with no pull-down on this pin.
42 PA13 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
43 PA12 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
44 PA11 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
45 VDDCORE power_in Core chip power supply, connected externally to VDDOUT or VDDCOREXT100 or VDDCOREXT120.
46 PB10 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
47 PB11 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
48 PA10 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
49 PA9 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
50 PB5 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
51 PA27 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
52 PA26 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
53 GND power_in Ground reference.
54 PB6 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
55 PB7 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
56 PA25 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
57 PB13 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
58 PA24 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
59 PB8/XOUT bidirectional Parallel I/O Controller B line PB8 shared with main oscillator output XOUT; pull-up is disabled on PB8.
60 PB9/XIN bidirectional Parallel I/O Controller B line PB9 shared with main oscillator input XIN; pull-up is disabled on PB9.
61 PA2 bidirectional Parallel I/O Controller A line powered from VDDIO, pulled-up input at reset.
62 PB4 bidirectional Parallel I/O Controller B line powered from VDDIO, pulled-up input at reset.
63 JTAGSEL input JTAG selection input, active high with pull-down resistor, powered from VDDIO.
64 VDDIO power_in Peripheral I/O line, voltage regulator and ADC power supply, operating from 1.62V to 3.6V.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package LQFP-64(10x10)
Category Embedded Processors & Controllers
Pins 64

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VDDIO supply voltage (Peripheral I/O, voltage regulator, ADC power supply) VDDIO 1.62 3.6 V Signal description table, power supplies 6
Voltage regulator output (VDDOUT) VDDOUT 1.08 1.32 V Voltage regulator output, signal description table 6
Industrial operating temperature range -40 85 °C LQFP64, Tray/Reel, MRL B (ATSAMG55J19B-AU) 14
Maximum CPU / device clock frequency fMAX 120 MHz Cortex-M4 processor; 120 MHz requires VDDCORE from VDDCOREXT120 or trimmed regulator 5

CAD (KiCad official)

  • Symbol: ATSAMG55J19B-AU
  • Footprint: Package_QFP:LQFP-64_10x10mm_P0.5mm
  • 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
  • 3D model files: atsamg55j19b-au-etched.step / atsamg55j19b-au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamg55j19b-au.step / atsamg55j19b-au.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (16 pp, sha256 d321d541eed61a4b, retrieved 2026-10-31, 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