Atmega8 Arduino Bootloader
ATmega8 in DIP package, pre-loaded with the Arduino (16MHz) Bootloader. This will allow you to use Arduino code in your custom embedded project without having to use an actual Arduino board.
To get this chip working with Arduino IDE, you will need an external 16MHz crystal or resonator, a 5V supply, and a serial connection.
Atmel's ATMega8 8-Bit Processor in 28 pin DIP package. 8K of program space. 23 I/O lines. Runs up to 20MHz with external crystal. Package can be programmed in circuit. 1.8V to 5V operating voltage.