This application note acts as a guide to help users of ATmega48PA/88PA/168PA migrating to the newer ATmega48PB/88PB/168PB.

ATmega48PB/88PB/168PB is functionally compatible with ATmega48PA/88PA/168PA. This document will describe how to update the toolchain, developer tools, and IDE.

Always check the latest revision of the corresponding data sheet for the latest and correct characteristics and device details. It is recommended to review the Errata list.

The latest data sheets can be found here: