Datasheet

i
8493A–AVR–02/12
XMEGA C4
Table of Contents
Features ..................................................................................................... 1
1 Ordering Information ............................................................................... 2
2 Pinout/Block Diagram .............................................................................. 3
3 Overview ................................................................................................... 4
3.1Block Diagram ...........................................................................................................5
4 Resources ................................................................................................. 6
4.1Recommended reading .............................................................................................6
5 Capacitive touch sensing ........................................................................ 6
6 AVR CPU ................................................................................................... 7
6.1Features ....................................................................................................................7
6.2Overview ...................................................................................................................7
6.3Architectural Overview ..............................................................................................7
6.4ALU - Arithmetic Logic Unit .......................................................................................8
6.5Program Flow ............................................................................................................9
6.6Status Register ..........................................................................................................9
6.7Stack and Stack Pointer ............................................................................................9
6.8Register File ............................................................................................................10
7 Memories ................................................................................................ 11
7.1Features ..................................................................................................................11
7.2Overview .................................................................................................................11
7.3Flash Program Memory ...........................................................................................12
7.4Fuses and Lock bits ................................................................................................13
7.5Data Memory ...........................................................................................................13
7.6EEPROM .................................................................................................................14
7.7I/O Memory ..............................................................................................................14
7.8Memory Timing ........................................................................................................14
7.9Device ID and Revision ...........................................................................................15
7.10I/O Memory Protection ..........................................................................................15
7.11Flash and EEPROM Page Size .............................................................................15
8 Event System ......................................................................................... 16
8.1Features ..................................................................................................................16
8.2Overview .................................................................................................................16