ATmega32U6/AT90USB64/128

28.5进入Boot Loader程序............................................ ........................ 353

28.6中寻址Flash在自编程.......................................... ..... 357

28.7自编程闪存............................................ .................................. 358

29存储器编程............................................... .......................... 366

29.1程序存储器和数据存储器锁定位........................................... .................... 366

29.2熔丝位............................................................................................................367

29.3签名字节............................................... .................................................. 369

29.4校准字节............................................... .................................................. 369

29.5并行编程参数，引脚映射及命令................... 369

29.6并行编程............................................... ......................................... 372

29.7串行下载............................................... ............................................. 380

29.8串行编程引脚映射............................................. ......................... 381

通过JTAG接口29.9编程............................................ .................... 385

30电气特性AT90USB64 / 128 .................................. 398

30.1绝对最大额定值* ............................................. ................................ 398

30.2直流特性............................................... .............................................. 398

30.3外部时钟驱动波形............................................. .......................... 400

30.4外部时钟驱动.............................................. ............................................ 400

30.5最高车速与V

CC ...........................................................................................................................400

30.6 2线串行接口特性........................................... .................... 401

30.7 SPI时序特性.............................................. .................................. 403

30.8硬件启动EntranceTiming特点............................................. ... 404

30.9 ADC特性............................................... ........................................... 405

30.10外部数据存储器时序............................................. ............................ 407

31

AT90USB64 / 128的典型特征.......................................... 412

31.1的输入电平.............................................. ............................................ 413

31.2输出电压电平.............................................. ......................................... 414

31.3掉电电源电流............................................ .................................. 416

31.4省电电源电流............................................ ................................... 417

31.5空闲电源电流.............................................. .............................................. 418

31.6有源电源电流.............................................. .......................................... 418

31.7复位电流.............................................. .......................................... 419

31.8 I / O上拉电流.......................................... .................................................. 0.419

31.9带隙基准电压............................................... ................................................ 420

31.10内部AREF电压.............................................. ........................................ 421

457

7593H–AVR–11/08