uPD780065 Subseries PUM - Renesas Electronics

3.2 Processor Registers ............................................................................................................ 50
3.2.1 Control registers ......................................................................................................................... 50
3.2.2 General registers ........................................................................................................................ 53
3.2.3 Special Function Register (SFR) ................................................................................................ 54
3.3 Instruction Address Addressing ........................................................................................ 58
3.3.1 Relative addressing .................................................................................................................... 58
3.3.2 Immediate addressing ................................................................................................................ 59
3.3.3 Table indirect addressing ........................................................................................................... 60
3.3.4 Register addressing ................................................................................................................... 61
3.4 Operand Address Addressing ............................................................................................ 62
3.4.1 Implied addressing ..................................................................................................................... 62
3.4.2 Register addressing ................................................................................................................... 63
3.4.3 Direct addressing ....................................................................................................................... 64
3.4.4 Short direct addressing .............................................................................................................. 65
3.4.5 Special-function register (SFR) addressing ............................................................................... 67
3.4.6 Register indirect addressing ....................................................................................................... 68
3.4.7 Based addressing ...................................................................................................................... 69
3.4.8 Based indexed addressing ......................................................................................................... 70
3.4.9 Stack addressing ........................................................................................................................ 70
CHAPTER 4 PORT FUNCTIONS ....................................................................................................... 71
4.1 Port Functions ...................................................................................................................... 71
4.2 Port Configuration ............................................................................................................... 73
4.2.1 Port 0 .......................................................................................................................................... 73
4.2.2 Port 2 .......................................................................................................................................... 75
4.2.3 Port 3 .......................................................................................................................................... 76
4.2.4 Port 4 .......................................................................................................................................... 77
4.2.5 Port 5 .......................................................................................................................................... 78
4.2.6 Port 6 .......................................................................................................................................... 79
4.2.7 Port 7 .......................................................................................................................................... 80
4.2.8 Port 8 .......................................................................................................................................... 82
4.2.9 Port 9 .......................................................................................................................................... 83
4.3 Port Function Control Registers ........................................................................................ 84
4.4 Port Function Operations .................................................................................................... 88
4.4.1 Writing to input/output port ......................................................................................................... 88
4.4.2 Reading from input/output port ................................................................................................... 88
4.4.3 Operations on input/output port .................................................................................................. 88
CHAPTER 5 CLOCK GENERATOR ................................................................................................. 89
5.1 Clock Generator Functions ................................................................................................. 89
5.2 Clock Generator Configuration .......................................................................................... 89
5.3 Clock Generator Control Register ...................................................................................... 91
5.4 System Clock Oscillator ...................................................................................................... 93
5.4.1 Main system clock oscillator ....................................................................................................... 93
5.4.2 Subsystem clock oscillator ......................................................................................................... 94
5.4.3 Scaler ......................................................................................................................................... 97
5.4.4 When no subsystem clocks are used ......................................................................................... 97
12 Preliminary User’s Manual U13420EJ2V0UM00