读数据.......................................................................................................... 42

注册............................................................................................................. 43

在系统编程（ ISP ） ........................................... ................ 44

闪存编程和擦除.............................................. .........................

引导过程......................................................................................................

应用程序编程接口............................................. .......................

XROW字节......................................................................................................

硬件条件................................................ ..........................................

44

45

46

46

46

片上扩展RAM （ ERAM ） .......................................... ............. 48

定时器2 ................................................ ................................................. 51

自动重载模式.............................................. ................................................. 51

可编程时钟输出............................................... ............................... 52

可编程计数器阵列（ PCA ） ............................................ ..... 56

PCA捕捉模式............................................... .............................................

16位软件定时器/比较模式.......................................... .....................

高速输出模式.............................................. .....................................

脉宽调制器方式.............................................. ...............................

PCA看门狗定时器............................................... ..........................................

63

63

64

65

66

串行I / O端口............................................. ......................................... 67

帧错误检测............................................... ......................................

自动地址识别............................................... ..........................

波特率选择为UART的模式1和3 ........................................ ......

UART的寄存器................................................ .................................................

67

68

70

73

中断系统................................................ ................................. 77

概观............................................................................................................ 77

注册............................................................................................................ 78

中断源和向量地址............................................. ............... 85

键盘接口................................................ ............................. 86

Introduction......................................................................................................... 86

描述......................................................................................................... 86

注册............................................................................................................ 87

可编程LED ................................................ ............................. 90

串行外设接口（SPI ） ............................................ ............ 91

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