ATXMEGA256A3U - 8/16-bit Atmel XMEGA A3U Microcontroller
ATXMEGA256A3U Features
* High-performance, low-power Atmel® AVR® XMEGA® 8/16-bit Microcontroller Nonvolatile program and data memories
* 64K - 256KBytes of in-system self-programmable flash
* 4K - 8KBytes boot section
* 2K - 4KBytes EEPROM
* 4K - 16KBytes intern