Since the size of it is extremely small, the external components are needed to be kept at minimum, it consists of an ATmega328 with the Arduino boot loader. It needs a V of 2 to 5 in order to run. What’s cool about the latest version is that is it supports automatic reset, and this is basically to make the programming easier and faster! Let’s talk about the back side now. It’s completely FLAT. In order to keep the header from poking though it we use a surface mount programming connector. This version uses 8MHz.
Arduino 0016 supports the Arduino Pro Mini 328/8MHz. Use this setting when using this new LilyPad 328. LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun.
Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They're even washable! AWESOME!