The Atmel ATMega168 is the heart of the popular Open-source Arduino microcontroller project. If it's good enough for them, it most likely can manage your project too!
Used in the Freeduino SB and other Arduino projects, the Atmel ATmega168-20P is notable microprocessor. The other version is the ATMega8, which we also carry, but is a bit more limited. This microcontroller is the memory-upgraded version of the ATmega48 (4k flash version), and is similar to the ATmega88 (8k flash version). It's different in that it (and the '88) support bot loader and interrupt vector sizes.
Flash - 16kB
EEPROM - 512B
SRAM - 1024B
Speed - 0-20MHz
Volts - 2.7-5.5V
The AVR series of microcontrollers are right up there with Microchip PIC products. Powerful, inexpensive, and programmable with some very good open source software (look up GCC), with a vibrant user community.
Here are more key features: