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3.2.3 Special Function Register (SFR) ......................................................................................... 37
3.3 Instruction Address Addressing ..................................................................................... 40
3.3.1 Relative Addressing ............................................................................................................. 40
3.3.2 Immediate addressing ......................................................................................................... 41
3.3.3 Table indirect addressing ..................................................................................................... 42
3.3.4 Register addressing ............................................................................................................. 43
3.4 Operand Address Addressing ......................................................................................... 44
3.4.1 Implied addressing .............................................................................................................. 44
3.4.2 Register addressing ............................................................................................................. 45
3.4.3 Direct addressing ................................................................................................................. 46
3.4.4 Short direct addressing ........................................................................................................ 47
3.4.5 Special-Function Register (SFR) addressing ...................................................................... 49
3.4.6 Register indirect addressing ................................................................................................ 50
3.4.7 Based addressing ................................................................................................................ 51
3.4.8 Based indexed addressing .................................................................................................. 52
3.4.9 Stack addressing ................................................................................................................. 52
CHAPTER 4 PORT FUNCTIONS .................................................................................................... 53
4.1 Port Functions................................................................................................................... 53
4.2 Port Configuration ............................................................................................................ 55
4.2.1 Port 0 ................................................................................................................................... 55
4.2.2 Port 1 ................................................................................................................................... 57
4.2.3 Port 3 ................................................................................................................................... 58
4.2.4 Port 5 ................................................................................................................................... 59
4.2.5 Port 7 ................................................................................................................................... 60
4.2.6 Port 10 ................................................................................................................................. 62
4.3 Port Function Control Registers ..................................................................................... 63
4.4 Port Function Operations................................................................................................. 67
4.4.1 Writing to input/output port................................................................................................... 67
4.4.2 Reading from input/output port ............................................................................................ 67
4.4.3 Operations on input/output port ........................................................................................... 67
CHAPTER 5 CLOCK GENERATOR ................................................................................................ 69
5.1 Clock Generator Functions .............................................................................................. 69
5.2 Clock Generator Configuration ....................................................................................... 69
5.3 Clock Generator Control Register ................................................................................... 71
5.4 System Clock Oscillator................................................................................................... 73
5.4.1 Main system clock oscillator ................................................................................................ 73
5.4.2 Scaler................................................................................................................................... 75
5.5 Clock Generator Operations ............................................................................................ 76
5.6 Changing CPU Clock Settings ......................................................................................... 77
5.6.1 Time required for CPU clock switchover.............................................................................. 77
5.6.2 CPU clock switching procedure ........................................................................................... 78
CHAPTER 6 8-BIT TIMER/EVENT COUNTERS 5 AND 6 .............................................................. 79
6.1 8-Bit Timer/Event Counters 5 and 6 Functions .............................................................. 80
6.2 8-Bit Timer/Event Counters 5 and 6 Configurations...................................................... 82
6.3 8-Bit Timer/Event Counters 5 and 6 Control Registers ................................................. 84