Atmel CPU - ATmega644PA-20PU with optional bootloader. The ZBasic bootloader allows downloading with the ZBasic IDE (ZBasic Generic Target License required) while the Arduino OptiBoot bootloader allows downloading with the Arduino (v1.0.2 or later) environment. The bootloaders are built for 16MHz operation. If ordered with no bootloader, the device will be shipped in "factory default" configuration.

Available Options:

Bootloader:
NoneArduino OptiBoot (+$2.00)ZBasic Generic (+$2.00)