Atmel ATxmega128A3-AU, Manual, Page: 67 / 71

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8068C–AVR–06/08
XMEGA A3
Table of Contents
Features ..................................................................................................... 1
Typical Applications ................................................................................ 1
1 Ordering Information ............................................................................... 2
2 Pinout/Block Diagram .............................................................................. 2
3 Overview ................................................................................................... 3
3.1Block Diagram ...........................................................................................................4
4 Resources ................................................................................................. 5
4.1Recommended reading .............................................................................................5
5 Disclaimer ................................................................................................. 5
6 AVR CPU ................................................................................................... 6
6.1Features ....................................................................................................................6
6.2Overview ....................................................................................................................6
6.3Register File ..............................................................................................................7
6.4ALU - Arithmetic Logic Unit .......................................................................................7
6.5Program Flow ............................................................................................................7
7 Memories .................................................................................................. 8
7.1Features ....................................................................................................................8
7.2Overview ....................................................................................................................8
7.3In-System Programmable Flash Program Memory ...................................................9
7.4Data Memory ...........................................................................................................10
7.5Calibration Row .......................................................................................................12
7.6User Signature Row ................................................................................................12
7.7Flash and EEPROM Page Size ...............................................................................13
8 DMAC - Direct Memory Access Controller .......................................... 14
8.1Features ..................................................................................................................14
8.2Overview ..................................................................................................................14
9 Event System .......................................................................................... 15
9.1Features ..................................................................................................................15
9.2Overview ..................................................................................................................15
10 System Clock and Clock options ......................................................... 17
10.1Features ................................................................................................................17