ATmega328 with Arduino Bootloader

• Pre-loaded with the Arduino (16MHz) Bootloader
• Operating Voltage: 1.8V to 5V
• Runs up to 20MHz with external crystal
• 32K of program space. 23 I/O lines, 6 of which are channels for the 10-bit ADC

The ATmega328 with Arduino Bootloader allows you to use Arduino code in your custom embedded project without having to use an actual Arduino board.