ATmega165(P)

目录

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

1

引脚配置................................................ ................................... 2

1.1免责声明.................................................................................................................2

2

概述................................................. .................................................. 3

2.1框图..........................................................................................................3

2.2引脚说明.......................................................................................................5

3

4

5

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

代码例子............................................... .............................. 8

AVR CPU内核

.......................................................................................... 9

5.1简介...............................................................................................................9

5.2结构概述............................................... .............................................. 9

5.3 ALU - 算术逻辑单元............................................ ....................................... 10

5.4状态寄存器.......................................................................................................11

5.5通用寄存器文件............................................. .................................. 12

5.6堆栈指针..........................................................................................................13

5.7指令执行时间.............................................. .................................... 14

5.8复位和中断处理............................................. .................................... 15

6

AVR回忆................................................ ........................................ 17

6.1在系统内可编程闪存程序存储器.......................................... ..17

6.2 SRAM数据存储器.............................................. ................................................ 18

6.3 EEPROM数据存储器.............................................. ........................................... 20

6.4 EEPROM寄存器说明.............................................. ................................. 25

6.5 I / O存储器.............................................................................................................27

6.6通用I / O寄存器........................................... ................................... 27

7

系统时钟及时钟选项............................................. ............ 28

7.1时钟系统及其分布............................................ .......................... 28

7.2时钟源........................................................................................................29

7.3默认时钟源.............................................. ................................................ 30

7.4标定的片内RC振荡器............................................. ............................... 30

7.5晶体振荡器....................................................................................................31

7.6低频晶体振荡器............................................ ................................ 32

7.7外部时钟........................................................................................................34

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8018A–AVR–03/06