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7.8定时器/计数器振荡器............................................. ........................................... 35
7.9时钟输出缓冲器.............................................. .................................................. 35
7.10系统时钟预分频器.............................................. ......................................... 35
7.11寄存器说明............................................... .............................................. 36
8
电源管理及睡眠模式............................................. .... 38
8.1睡眠模式..........................................................................................................38
8.2空闲模式................................................................................................................39
8.3 ADC噪声抑制模式............................................. ..................................... 39
8.4掉电模式............................................. .................................................. ..39
8.5省电模式............................................. .................................................. ... 40
8.6待机模式........................................................................................................40
8.7功率降低注册.............................................. ........................................ 40
8.8最小化功耗.............................................. ............................... 41
8.9寄存器说明............................................... ................................................ 43
9
系统控制和复位.............................................. ...................... 45
9.1复位AVR .............................................. .................................................. ..45
9.2复位源........................................................................................................45
9.3内部参考电压.............................................. ....................................... 50
9.4看门狗定时器.....................................................................................................50
9.5寄存器说明............................................... ................................................ 53
10中断................................................ ................................................ 55
10.1中断向量ATmega165P ............................................. ........................... 55
10.2之间移动应用程序和Boot航天中断..................................... 58
11外部中断............................................... .................................. 60
11.1引脚电平变化中断时序............................................. ................................... 60
11.2寄存器说明............................................... .............................................. 61
12个I / O端口............................................ .................................................. .... 64
12.1介绍...........................................................................................................64
12.2端口作为通用数字I / O .......................................... ........................................ 65
12.3端口的第二功能.............................................. ......................................... 70
12.4寄存器说明的I / O端口......................................... ................................ 83
13 8位定时器/计数器与PWM ......................................... ................... 86
13.1概述..............................................................................................................86
13.2定时器/计数器时钟源............................................ .................................. 87
ii
ATmega165(P)
8018A–AVR–03/06
