Table of Contents

Introduction......................................................................................................................1

Features.......................................................................................................................... 1

1. Description.................................................................................................................4

2. Configuration Summary............................................................................................. 5

3. Ordering Information..................................................................................................6

3.1.

ATmega48PB............................................................................................................................... 6

3.2.

ATmega88PB............................................................................................................................... 6

3.3.

ATmega168PB ............................................................................................................................ 7

4. Block Diagram........................................................................................................... 8

5. Pin Configurations..................................................................................................... 9

5.1.

Pin Descriptions..........................................................................................................................10

6. I/O Multiplexing........................................................................................................ 13

7. Comparison Between Processors........................................................................... 14

8. Resources................................................................................................................15

9. Data Retention.........................................................................................................16

10. About Code Examples.............................................................................................17

11. Capacitive Touch Sensing....................................................................................... 18

11.1. QTouch Library........................................................................................................................... 18

12. Packaging Information.............................................................................................19

12.1. 32A............................................................................................................................................. 19

12.2. 32MS1........................................................................................................................................ 20

13. Errata.......................................................................................................................21

13.1. Errata ATmega48PB...................................................................................................................21

13.2. Errata ATmega88PB...................................................................................................................22

13.3. Errata ATmega168PB.................................................................................................................23