特徴

• 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 .
• Features：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