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Arduino UNO Rev3 A000066 ATmega328P Development Board with USB Interface

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Arduino UNO Rev3 A000066

The Arduino UNO Rev3 is the official ATmega328P-based reference board for learning, prototyping and embedded control. Its established connector layout and software ecosystem make it suitable for a wide range of shields, sensors and starter projects.

Arduino UNO Rev3 A000066 1

Official Board Specifications

  • ATmega328P microcontroller running at 16 MHz.
  • 14 digital I/O pins, including 6 PWM outputs.
  • 6 analog inputs.
  • 32 KB flash memory, 2 KB SRAM and 1 KB EEPROM.
  • ATmega16U2 USB-to-serial interface, USB connector, DC power jack, ICSP headers and reset button.

Arduino UNO Rev3 A000066 connectors and pin layout 2

Arduino UNO Rev3 A000066 connectors and pin layout 3

Compatibility Notes

Check each shield or module for pin conflicts, current demand and 5 V logic compatibility. This description is based on official model A000066 and does not use specifications from CH340 or other compatible-clone versions.

Arduino UNO Rev3 A000066 package 4

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