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ATSAM3X8EA-AU

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Microchip Tech ATMEL & AVR, LQFP-144(20x20). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersatsam3x8ea-aufactory-2.0.0extractor-text

Verified ATSAM3X8EA-AU

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 144 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAM3X8EA-AU · LQFP-144(20x20) · 144 pins
  • ✓copper: 144 copper pads, none touching another net
  • ✓datasheet: all 144 pin names found in the 71-page datasheet
  • ✓distributor: lcsc C79305, digikey ATSAM3X8EA-AU-ND, mouser 556-ATSAM3X8EA-AU
  • ✓family: LQFP-144_20x20mm_P0.5mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-nu9v6p18/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: 144 pins = 144 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 144 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsam3x8ea-au.kicad_sym✓ atsam3x8ea-au.kicad_mod✓ atsam3x8ea-au.step
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ATSAM3X8EA-AU

Microchip Tech · ATMEL & AVR · LQFP-144(20x20)

ATSAM3X8EA-AU from Microchip Tech, in a LQFP-144(20x20). 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 PB26 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
2 PA9 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
3 PA10 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
4 PA11 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
5 PA12 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
6 PA13 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
7 PA14 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
8 PA15 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
9 PA17 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
10 VDDCORE power_in Powers the core, embedded memories and peripherals; voltage range 1.62V to 1.95V.
11 VDDIO power_in Powers the peripheral I/O lines; voltage range 1.62V to 3.6V.
12 GND power_in Ground common to the VDDCORE and VDDIO power supplies.
13 PD0 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
14 PD1 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
15 PD2 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
16 PD3 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
17 PD4 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
18 PD5 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
19 PD6 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
20 PD7 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
21 PD8 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
22 PD9 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
23 PA0 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
24 PA1 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
25 PA5 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
26 PA7 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
27 PA8 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
28 PB28 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
29 PB29 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
30 PB30 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
31 PB31 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
32 PD10 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
33 GNDPLL power_in Separate ground for the VDDPLL supply.
34 VDDPLL power_in Powers PLL A, UPLL and the 3-20 MHz oscillator; voltage range 1.62V to 1.95V.
35 XOUT output Output of the 3 to 20 MHz crystal or ceramic oscillator.
36 XIN input Input of the 3 to 20 MHz crystal or ceramic oscillator.
37 DHSDP bidirectional USB High Speed Data plus line, powered from VDDUTMI.
38 DHSDM bidirectional USB High Speed Data minus line, powered from VDDUTMI.
39 VBUS power_in USB bus power measurement port.
40 VBG passive Listed in the 144-lead pinout; no function is given in the provided pages.
41 VDDUTMI power_in Powers the UTMI+ interface; voltage range 3.0V to 3.6V, 3.3V nominal.
42 DFSDP bidirectional USB Full Speed Data plus line, powered from VDDUTMI.
43 DFSDM bidirectional USB Full Speed Data minus line, powered from VDDUTMI.
44 GNDUTMI power_in Separate ground for the VDDUTMI supply.
45 VDDCORE power_in Powers the core, embedded memories and peripherals; voltage range 1.62V to 1.95V.
46 JTAGSEL input JTAG selection pin; no further function is given in the provided pages.
47 NRSTB input Listed in the 144-lead pinout; no further function or limits are given in the provided pages.
48 XIN32 input Input of the 32.768 kHz slow clock crystal oscillator.
49 XOUT32 output Output of the 32.768 kHz slow clock crystal oscillator.
50 SHDN input Listed in the 144-lead pinout; the provided pages give no pin-level function beyond the regulator Shutdown mode.
51 TST input Test pin; the provided pages give no function or limits.
52 VDDBU power_in Powers the slow clock oscillator and part of the System Controller; 1.62V to 3.6V, and must be supplied before or at the same time as VDDIO and VDDCORE.
53 FWUP input Fast wake-up input feeding the Fast Startup sources; no electrical limits are given.
54 GNDBU power_in Separate ground for the VDDBU supply.
55 PC1 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
56 VDDOUT power_out Output of the internal voltage regulator; the default output voltage is 1.80V.
57 VDDIN power_in Powers the voltage regulator; no voltage range is given in the provided pages.
58 GND power_in Ground common to the VDDCORE and VDDIO power supplies.
59 PC2 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
60 PC3 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
61 VDDCORE power_in Powers the core, embedded memories and peripherals; voltage range 1.62V to 1.95V.
62 VDDIO power_in Powers the peripheral I/O lines; voltage range 1.62V to 3.6V.
63 PC5 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
64 PC6 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
65 PC7 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
66 PC8 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
67 PC9 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
68 PB27 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
69 NRST bidirectional Reset pin; the Reset Controller shapes a reset signal for external devices and allows a push-button connection.
70 PA18 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
71 PA19 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
72 PA20 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
73 VDDANA power_in Powers the ADC and DAC cells; voltage range 2.0V to 3.6V.
74 GNDANA power_in Separate ground for the VDDANA supply.
75 ADVREF input ADC and DAC reference voltage input.
76 PB15 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
77 PB16 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
78 PA16 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
79 PA24 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
80 PA23 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
81 PA22 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
82 PA6 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
83 PA4 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
84 PA3 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
85 PA2 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
86 PB12 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
87 PB13 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
88 PB17 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
89 PB18 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
90 PB19 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
91 PB20 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
92 PB21 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
93 PC11 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
94 PC12 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
95 PC13 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
96 PC14 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
97 PC15 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
98 PC16 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
99 PC17 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
100 PC18 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
101 PC19 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
102 PC29 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
103 PC30 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
104 VDDCORE power_in Powers the core, embedded memories and peripherals; voltage range 1.62V to 1.95V.
105 VDDIO power_in Powers the peripheral I/O lines; voltage range 1.62V to 3.6V.
106 GND power_in Ground common to the VDDCORE and VDDIO power supplies.
107 PA21 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
108 PA25 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
109 PA26 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
110 PA27 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
111 PA28 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
112 PA29 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
113 PB0 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
114 PB1 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
115 PB2 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
116 PC4 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
117 PC10 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
118 PB3 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
119 PB4 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
120 PB5 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
121 PB6 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
122 PB7 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
123 PB8 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
124 VDDCORE power_in Powers the core, embedded memories and peripherals; voltage range 1.62V to 1.95V.
125 VDDIO power_in Powers the peripheral I/O lines; voltage range 1.62V to 3.6V.
126 GND power_in Ground common to the VDDCORE and VDDIO power supplies.
127 PB9 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
128 PB10 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
129 PB11 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
130 PC0 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
131 PC20 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
132 PC21 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
133 PC22 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
134 PC23 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
135 PC24 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
136 PC25 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
137 PC26 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
138 PC27 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
139 PC28 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
140 PB14 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
141 PB22 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
142 PB23 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
143 PB24 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.
144 PB25 bidirectional General-purpose PIO line; no electrical limits or alternate function given in the provided pages.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package LQFP-144(20x20)
Category Embedded Processors & Controllers
Pins 144

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
VDDCORE supply voltage range VDDCORE 1.62 1.95 V 19
VDDIO supply voltage range VDDIO 1.62 3.6 V 19
VDDBU supply voltage range VDDBU 1.62 3.6 V 19
VDDPLL supply voltage range VDDPLL 1.62 1.95 V 19
VDDUTMI supply voltage range VDDUTMI 3 3.3 3.6 V Powers the UTMI+ interface 19
VDDANA supply voltage range VDDANA 2 3.6 V Powers the ADC and DAC cells 19
VDDANA minimum for DAC VDDANA 2.4 V For DAC 20
VDDANA minimum for ADC VDDANA 2 V For ADC 20
VDDUTMI minimum for USB VDDUTMI 3 V For USB 20
Single supply input voltage (main supply) VDDIN 1.8 3.6 V Single supply mode, Figure 5-1 label Main Supply 20
Voltage regulator quiescent current, Normal mode 700 µA Normal mode, static current 19
Voltage regulator output current, Normal mode 150 mA Normal mode, output current drawn 19
Voltage regulator current in Shutdown mode 1 µA Shutdown mode 19
Voltage regulator default output voltage VDDOUT 1.8 V Default output voltage 19
Voltage regulator start-up time to Normal mode 400 µs Start-up time to reach Normal mode 19
Processor clock frequency 84 MHz Cortex-M3 running at up to 84 MHz 1
Operating temperature range (Industrial) -40 85 °C Industrial, Green package, LQFP144 ordering code ATSAM3X8EA-AU 69
High-speed I/O toggle frequency, HSMCI and SPI clock lines 65 MHz HSMCI and SPI clock lines 27
High-speed I/O toggle frequency, other lines 45 MHz Other I/O lines 27
On-die series termination (ODT) resistance 36 Ω Typical value of internal series termination 27
Typical I/O pull-up resistor 100 kΩ Typical value for all I/Os 27
NRST internal pull-up resistor to VDDIO NRST 100 kΩ Permanent pull-up to VDDIO 29
NRSTB internal pull-up resistor NRSTB 15 kΩ Permanent pull-up 29
ERASE internal pull-down resistor to GND ERASE 100 kΩ Pull-down to GND 29
JTAGSEL internal pull-down resistor to GND JTAGSEL 15 kΩ Permanent pull-down to GND 28
TST internal pull-down resistor to GND TST 15 kΩ Permanent pull-down to GND 28

CAD (KiCad official)

  • Symbol: ATSAM3X8EA-AU
  • Footprint: Package_QFP:LQFP-144_20x20mm_P0.5mm
  • 3D model: LQFP-144(20x20) (KiCad packages3D, STEP)
  • 3D model files: atsam3x8ea-au-etched.step / atsam3x8ea-au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsam3x8ea-au.step / atsam3x8ea-au.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (71 pp, sha256 af9481b04e945534, retrieved 2026-11-05, 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