This board carries an Atmel ATXMega128A4U microcontroller. It fits
directly on most breadboards. Load your firmware via PDI or with the
preinstalled original Atmel USB-DFU-Loader (Flip). Check out all details, schematic and layout .
micro-USB, ESD protected 4 MHz Crystal RX and TX LEDs for serial port PDI header all filter and protection parts on board. 3.3 V single supply