Contents

1. Features 2. Introduction 3. Getting Started 3.1. Quick-Start 3.2. Programming the kit 3.2.1. Using the bootloader 3.2.2. Using a programming tool 3.3. Connecting the kit 3.3.1. USB power supply 3.3.2. Atmel AVR Dragon 3.3.3. Atmel AVR JTAGICE mkII 3.3.4. Atmel JTAGICE3 3.3.5. Atmel AVR ONE! 3.4. Tools and documentation for XMEGA-A3BU Xplained 4. Hardware Users Guide 4.1. Kit overview 4.1.1. Power supply 4.1.2. Measuring XMEGA power consumption 4.1.3. Connectors 4.1.3.1. Programming header 4.1.3.2. I/O expansion headers 4.1.4. Peripherals 4.1.4.1. Serial flash 4.1.4.2. QTouch button 4.1.4.3. Battery backup system 4.1.4.4. Mechanical buttons 4.1.4.5. LEDs 4.1.4.6. FSTN LCD display 4.1.4.7. Temperature sensor 4.1.4.8. Ambient light sensor 5. Revision history and known issues 5.1. Revision 2 5.2. Revision 1 6. Evaluation board/kit important notice 7. Legal Disclaimer