XMEGA A4

目录

产品特点..................................................................................................... 1

典型应用................................................ ................................ 1

1

2

3

订购信息................................................ ............................... 2

引脚排列/框图.............................................. ................................ 3

概述................................................. ..................................................五

3.1Block图...........................................................................................................6

4

资源................................................. ................................................ 7

4.1Recommended阅读............................................... .............................................. 7

5

6

免责声明................................................. ................................................ 7

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

6.1Features ....................................................................................................................8

6.2Overview ...................................................................................................................8

6.3Register文件..............................................................................................................9

6.4ALU - 算术逻辑单元............................................ ........................................... 9

6.5Program流............................................................................................................9

7

回忆................................................. ............................................... 10

7.1Features ..................................................................................................................10

7.2Overview .................................................................................................................10

7.3In系统内可编程Flash程序存储器.......................................... ....... 11

7.4Data记忆...........................................................................................................12

7.5Production签名中.............................................. ......................................... 13

7.6User签名中.............................................. .................................................. 13

7.7Flash和EEPROM页面大小............................................ ................................... 14

8

DMAC - 直接存储器访问控制器.......................................... 15

8.1Features ..................................................................................................................15

8.2Overview .................................................................................................................15

9

事件系统................................................ ......................................... 16

9.1Features ..................................................................................................................16

9.2Overview .................................................................................................................16

10系统时钟及时钟选项............................................ ............. 18

10.1Features ................................................................................................................18

i

8069O–AVR–08/10