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The Atmel® UC3-A3 Xplained evaluation kit is a hardware platform for evaluating the Atmel AT32UC3A3256 microcontroller. The kit offers a range of features that enable the Atmel AVR® UC3 user to get started using AVR UC3 peripherals right away and understand how to integrate the AVR UC3 device in their own design.

NOTE: The UC3-A3 Xplained is suited for evaluation of both UC3A3 and UC3A4 microcontrollers. The two series share the same peripherals, except that the UC3A3 features a External Bus Interface (EBI) while the UC3A4 does not.
The AES peripheral of the UC3A3S/A4S and the Audio peripheral of the UC3A3AU are not supported by the device on this board. To evaluate these features please use the EVK1104S and EVK1104AU respectively.  

Key Features

  • Atmel AT32UC3A3256 microcontroller
  • Transfer data over the high-speed USB interface
  • Read temperature sensor with the ADC
  • Use the Atmel QTouch library to detect touches on the touch button and slider
  • Read/write data to the 64Mbit SDRAM
  • Use PWM as input to an analog filter and ADC to measure the filter response
  • 1 push button to interact with the microcontroller
  • 4 LEDs to show status information
  • Program the kit via USB bootloader or an Atmel programmer
  • Expand the board with Xplained top modules


Ordering Code Atmel Store Availability1 Unit Price2 Buy Online
AT32UC3A3-XPLD



1Backlog orders can be placed for items currently not available.
2Suggested retail price per unit for budgetary use only.