Table of Contents
Introduction......................................................................................................................1
Feature............................................................................................................................ 1
1. Description.................................................................................................................4
2. Configuration Summary............................................................................................. 5
3. Ordering Information .................................................................................................6
3.1. ATmega328 ................................................................................................................................. 6
3.2. ATmega328P ...............................................................................................................................7
4. Block Diagram........................................................................................................... 8
5. Pin Configurations..................................................................................................... 9
5.1. Pin-out.......................................................................................................................................... 9
5.2. Pin Descriptions..........................................................................................................................12
6. I/O Multiplexing........................................................................................................14
7. Resources................................................................................................................16
8. Data Retention.........................................................................................................17
9. About Code Examples.............................................................................................18
10. Capacitive Touch Sensing....................................................................................... 19
10.1. QTouch Library........................................................................................................................... 19
11. Packaging Information.............................................................................................20
11.1. 32-pin 32A.................................................................................................................................. 20
11.2. 32-pin 32M1-A............................................................................................................................21
11.3. 28-pin 28M1................................................................................................................................22
11.4. 28-pin 28P3................................................................................................................................ 23