3.2处理器寄存器.................................................................................................................... 82

3.2.1控制registers...............................................................................................................................82

3.2.2通用寄存器...............................................................................................................86

3.2.3特殊功能寄存器(SFRs).....................................................................................................87

3.3指令地址寻址.............................................. .................................................. 93

3.3.1相对寻址.........................................................................................................................93

3.3.2立即addressing......................................................................................................................94

3.3.3表间接addressing.................................................................................................................95

3.3.4寄存器寻址.........................................................................................................................95

3.4操作数地址寻址.............................................. .................................................. .... 96

3.4.1隐含addressing...........................................................................................................................96

3.4.2寄存器寻址.........................................................................................................................97

3.4.3直接寻址.............................................................................................................................98

3.4.4短直接寻址....................................................................................................................99

3.4.5特殊功能寄存器（ SFR ）地址........................................ ............................................ 100

3.4.6寄存器间接寻址..........................................................................................................101

3.4.7基址寻址..........................................................................................................................102

3.4.8基于索引addressing.............................................................................................................103

3.4.9堆栈寻址...........................................................................................................................104

第四章端口FUNCTIONS......................................................................................................... 105

4.1端口功能............................................................................................................................ 105

4.2端口配置..................................................................................................................... 108

4.2.1端口1 .............................................................................................................................................109

4.2.2端口2 .............................................................................................................................................115

4.2.3端口3 .............................................................................................................................................117

4.2.4端口4 .............................................................................................................................................120

4.2.5端口8 .............................................................................................................................................123

4.2.6端口9 .............................................................................................................................................124

4.2.7端口10 ...........................................................................................................................................125

4.2.8端口11 ...........................................................................................................................................126

4.2.9端口12 ...........................................................................................................................................129

4.2.10端口13 .........................................................................................................................................133

4.2.11端口14 .........................................................................................................................................134

4.2.12端口15 .........................................................................................................................................135

4.3寄存器控制端口功能............................................. ........................................... 136

4.4端口功能Operations.......................................................................................................... 143

4.4.1写入I / O port...........................................................................................................................143

4.4.2从我读/ O端口....................................................................................................................143

4.4.3操作上的I / O端口...................................................................................................................143

PFALL ， PF2 ， PF1 ， ISC ，端口模式寄存器和输出锁存器4.5设置使用时

备用功能................................................................................................................... 143

第五章时钟发生器.............................................. .................................................. 147 ....

5.1

5.2

5.3

5.4

时钟功能Generator................................................................................................... 147

配置时钟发生器的.............................................. .............................................. 148

寄存器控制时钟发生器的.............................................. ..................................... 150

系统时钟振荡器............................................................................................................ 161

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