C'est un arduino customisé, non? donc atmega?

edit: ouais atmega 168
http://www.atmel.com/dyn/products/product_card.asp?part_id=3303

16KB self-programming Flash Program Memory,
1KB SRAM,
512 Bytes EEPROM,
8 Channel 10-bit A/D-converter(TQFP/MLF).
debugWIRE On-chip Debug System.
Up to 20 MIPS throughput at 20 MHz.
Operating Voltage: 1,8V - 5.5V
Hardware Multiplier: Yes
http://www.atmel.com/dyn/resources/prod_documents/2545S.pdf