的ATmega48 / 88/168汽车

22.5

22.6

debugWIRE的局限............................................... .............................. 255

debugWIRE相关的寄存器I / O存储器.......................................... ...... 255

23自编程闪存， ATmega48中.......................................... 。 256

23.1

中寻址Flash在自编程........................................... 257

24支持引导装入程序 - 同时读 - 写自编程，

ATmega88与ATmega168的............................................... ................. 263

24.1

24.2

24.3

24.4

24.5

24.6

24.7

Boot Loader的特点............................................... ..................................... 263

应用程序和Boot Loader的Flash区............................................ ..... 263

同时读 - 写和非同时读 - 写Flash区........................ 264

Boot Loader锁定位.............................................. ..................................... 266

进入Boot Loader程序............................................. ................... 267

中寻址Flash在自编程........................................... 269

自编程闪存............................................. ............................. 270

25存储器编程............................................... .......................... 278

25.1

25.2

25.3

25.4

25.5

25.6

25.7

25.8

程序和数据存储器锁定位............................................ ............... 278

熔丝位........................................................................................................280

签名字节................................................ ............................................. 282

标定字节................................................ ............................................. 282

并行编程参数，引脚映射及命令............... 282

串行编程引脚映射.............................................. .................... 285

并行编程................................................ .................................... 285

串行下载................................................ ........................................ 293

26电气特性............................................... ..................... 298

26.1

26.2

26.3

26.4

26.5

26.6

26.7

26.8

绝对最大额定值* .............................................. ........................... 298

直流特性................................................ ......................................... 298

外部时钟驱动波形.............................................. ..................... 300

外部时钟驱动............................................... ....................................... 300

最大速度与V

CC

...............................................................................301

林再同步算法............................................. .................... 301

同步算法................................................ ............................. 301

防备OSCCAL间断.............................................. ..... 302

27 2线串行接口特性........................................... 303 ....

27.1

27.2

SPI时序特性............................................... ............................. 305

ADC特性................................................ ..................................... 306

337

7530H–AVR–02/09