NEC 78K0/KD1 Series User Manual page 10

3.3.2 Immediate addressing ................................................................................................................... 68
3.3.3 Table indirect addressing............................................................................................................... 69
3.3.4 Register addressing....................................................................................................................... 69
3.4 Operand Address Addressing .................................................................................................. 70
3.4.1 Implied addressing......................................................................................................................... 70
3.4.2 Register addressing....................................................................................................................... 71
3.4.3 Direct addressing........................................................................................................................... 72
3.4.4 Short direct addressing.................................................................................................................. 73
3.4.5 Special function register (SFR) addressing ................................................................................... 74
3.4.6 Register indirect addressing .......................................................................................................... 75
3.4.7 Based addressing .......................................................................................................................... 76
3.4.8 Based indexed addressing ............................................................................................................ 77
3.4.9 Stack addressing ........................................................................................................................... 77
CHAPTER 4 PORT FUNCTIONS ........................................................................................................... 78
4.1 Port Functions ............................................................................................................................ 78
4.2 Port Configuration...................................................................................................................... 80
4.2.1 Port 0 ............................................................................................................................................. 81
4.2.2 Port 1 ............................................................................................................................................. 84
4.2.3 Port 2 ............................................................................................................................................. 90
4.2.4 Port 3 ............................................................................................................................................. 91
4.2.5 Port 6 ............................................................................................................................................. 93
4.2.6 Port 7 ............................................................................................................................................. 94
4.2.7 Port 12 ........................................................................................................................................... 95
4.2.8 Port 13 ........................................................................................................................................... 96
4.2.9 Port 14 ........................................................................................................................................... 97
4.3 Registers Controlling Port Function ........................................................................................ 98
4.4 Port Function Operations ........................................................................................................ 102
4.4.1 Writing to I/O port......................................................................................................................... 102
4.4.2 Reading from I/O port .................................................................................................................. 102
4.4.3 Operations on I/O port ................................................................................................................. 102
CHAPTER 5 CLOCK GENERATOR .................................................................................................... 103
5.1 Functions of Clock Generator................................................................................................. 103
5.2 Configuration of Clock Generator .......................................................................................... 104
5.3 Registers Controlling Clock Generator.................................................................................. 105
5.4 System Clock Oscillator .......................................................................................................... 112
5.4.1 X1 oscillator ................................................................................................................................. 112
5.4.2 Subsystem clock oscillator........................................................................................................... 112
5.4.3 When subsystem clock is not used.............................................................................................. 115
5.4.4 Ring-OSC oscillator ..................................................................................................................... 115
5.4.5 Prescaler ..................................................................................................................................... 115
5.5 Clock Generator Operation ..................................................................................................... 115
5.6 Time Required to Switch Between Ring-OSC Clock and X1 Input Clock........................... 122
5.7 Changing System Clock and CPU Clock Settings................................................................ 123
5.7.1 Time required for switching between system clock and CPU clock ............................................. 123
5.8 Clock Switching Flowchart and Register Setting ................................................................. 124
5.8.1 Switching from Ring-OSC clock to X1 input clock........................................................................ 124
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Preliminary User's Manual U16315EJ1V0UD