Atmel's ATMega328 8-Bit Processor in 28 pin DIP package. It's like the ATmega168, with double the flash space. 32K of program space. 23 I/O lines, 6 of which are channels for the 10-bit ADC. Runs up to 20MHz with external crystal. Package can be programmed in circuit. 1.8V to 5V operating voltage!
This is the same chip that were used in Arduino boards, such as Arduino Uno, Duemilanove and other Arduino compatible boards. This is a blank chip. You need to burn it with the Arduino bootloader first before it could be used in any Arduino's projects.
Note: If you needed the ATmega328 with Arduino bootloader, please leave a comment in your order. We will put the Arduino bootloader for FREE!