ATXMEGA128A4_1012 Datasheet, PDF (103/108 Pages) ATMEL Corporation – 8/16-bit XMEGA A4 Microcontroller

XMEGA A4
Table of Contents
Features ..................................................................................................... 1
Typical Applications ................................................................................ 1
1 Ordering Information ............................................................................... 2
2 Pinout/Block Diagram .............................................................................. 3
3 Overview ................................................................................................... 5
3.1Block Diagram ...........................................................................................................6
4 Resources ................................................................................................. 7
4.1Recommended reading .............................................................................................7
5 Disclaimer ................................................................................................. 7
6 AVR CPU ................................................................................................... 8
6.1Features ....................................................................................................................8
6.2Overview ...................................................................................................................8
6.3Register File ..............................................................................................................9
6.4ALU - Arithmetic Logic Unit .......................................................................................9
6.5Program Flow ............................................................................................................9
7 Memories ................................................................................................ 10
7.1Features ..................................................................................................................10
7.2Overview .................................................................................................................10
7.3In-System Programmable Flash Program Memory .................................................11
7.4Data Memory ...........................................................................................................12
7.5Production Signature Row .......................................................................................13
7.6User Signature Row ................................................................................................13
7.7Flash and EEPROM Page Size ...............................................................................14
8 DMAC - Direct Memory Access Controller .......................................... 15
8.1Features ..................................................................................................................15
8.2Overview .................................................................................................................15
9 Event System ......................................................................................... 16
9.1Features ..................................................................................................................16
9.2Overview .................................................................................................................16
10 System Clock and Clock options ......................................................... 18
10.1Features ................................................................................................................18
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8069Q–AVR–12/10