的ATmega48 / 88/168汽车

13定时器/计数器和定时器/计数器预分频器.............................. 103

14个16位定时器/计数器与PWM ......................................... ............... 105

14.1

14.2

14.3

14.4

14.5

14.6

14.7

14.8

14.9

14.10

概观........................................................................................................105

访问16位寄存器............................................. ............................... 107

定时器/计数器时钟源............................................. .......................... 110

计数器单元..................................................................................................111

输入捕捉单元............................................... .......................................... 112

输出比较单元............................................... .................................... 114

比较匹配输出单元.............................................. ............................ 116

操作模式............................................... ........................................ 117

定时器/计数器时序图............................................. ...................... 125

16位定时器/计数器寄存器的说明.......................................... .......... 127

15 8位定时器/计数器，具有PWM和异步操作...... 134

15.1

15.2

15.3

15.4

15.5

15.6

15.7

15.8

15.9

15.10

概观........................................................................................................134

定时器/计数器时钟源............................................. .......................... 136

计数器单元..................................................................................................136

输出比较单元............................................... ...................................... 137

比较匹配输出单元.............................................. ............................ 138

操作模式............................................... ........................................ 140

定时器/计数器时序图............................................. ...................... 144

8位定时器/计数器寄存器的说明.......................................... ............ 146

定时器/计数器的异步操作........................................... ... 152

定时器/计数器预分频器.............................................. ................................. 155

16串行外设接口 - SPI ............................................ ............. 156

16.1

16.2

SS引脚的功能............................................... ....................................... 161

数据模式...................................................................................................163

17 USART0 ................................................ ................................................. 165

17.1

17.2

17.3

17.4

17.5

17.6

17.7

17.8

概观........................................................................................................165

时钟产生................................................ ........................................... 167

帧格式................................................ .............................................. 170

USART初始化................................................ ....................................... 171

数据传输 - USART发送............................................ ..172

数据接收 - USART接收............................................ ........... 175

异步数据接收............................................... ....................... 179

多处理器通信模式............................................. ............. 183

335

7530H–AVR–02/09