ATXMEGA64A1 datasheet(94/99 Pages) ATMEL

94 / 99 page

8067I–AVR–04/09

XMEGA A1

Table of Contents

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

Typical Applications ................................................................................ 1

Ordering Information ............................................................................... 2

Pinout/Block Diagram .............................................................................. 3

Overview ................................................................................................... 5

3.1

Block Diagram ...................................................................................................6

Resources ................................................................................................. 7

4.1

Recommended reading .....................................................................................7

Disclaimer ................................................................................................. 7

AVR CPU ................................................................................................... 8

6.1

Features ............................................................................................................8

6.2

Overview ............................................................................................................8

6.3

6.4

ALU - Arithmetic Logic Unit ...............................................................................9

6.5

Program Flow ....................................................................................................9

Memories ................................................................................................ 10

7.1

Features ..........................................................................................................10

7.2

Overview ..........................................................................................................10

7.3

In-System Programmable Flash Program Memory .........................................11

7.4

Data Memory ...................................................................................................11

7.5

Production Signature Row ...............................................................................14

7.6

User Signature Row ........................................................................................14

7.7

Flash and EEPROM Page Size .......................................................................15

DMAC - Direct Memory Access Controller .......................................... 16

8.1

Features ..........................................................................................................16

8.2

Overview ..........................................................................................................16

Event System .......................................................................................... 17

9.1

Features ..........................................................................................................17

9.2

Overview ..........................................................................................................17

System Clock and Clock options ......................................................... 19

10.1

Features ..........................................................................................................19

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