Atmel AVR1019: Migration from
ATxmega128A1/64A1 to ATxmega1281U/64A1U
Features
•
Enhancements and added functions
•
Reset sources
•
I/O ports
•
DAC – digital to analog converter
•
AC – analog comparator
1 Introduction
This application note is a guide to assist users of ATxmega128A1/64A1 in
converting designs to Atmel ATxmega128A1U/64A1U. For complete device details,
always refer to the most recent version of the ATxmega128A1U/64A1U datasheet
and the Atmel
®
AVR
®
XMEGA
®
AU manual. Errata differences between
ATxmega128A1/64A1 and ATxmega128A1U/64A1U are not listed in this
document, only in the device datasheet.
In addition to the differences described in this document, other typical
characteristics could be different. Please check the latest datasheet for details.
ATxmega128A1U/64A1U also includes new configuration options and functions. As
far as possible these are implemented as a superset of existing
ATxmega128A1/64A1 functions, so existing code for these devices will work on the
new devices without changing existing configuration or enabling new functions. The
new options and functions are listed in the application note for customers who in
addition to a pure migration also wish to see an overview to consider use of the
new functions.
8-bit Atmel
Microcontrollers
Application Note
Rev. 8415A-AVR-07/11
