Microchip's Xplain is an easy-to-use evaluation and demonstration kit for ATxmega128A1, offering complete hardware for evaluating the highly accurate analog functionality of the device. The ADC can be used to read a temperature sensor and a potentiometer, and the DAC can be used to generate sound on a mono speaker. Xplain also demonstrates how to interface external memories; the kit features 8MB SDRAM and 8MB data flash connected to the ATxmega128A1. Eight push buttons and eight LEDs are available for user interaction. The USB interface is a communication gateway between the ATxmega128A1 and a USB COM port.

AVR1907: Xplain Hardware Guide

AVR1010: App Note

Diagram of the Xplain Kit