NEC 78014Y Series User Manual page 17

5.4
CHAPTER 6
6.1
6.2
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6.3
6.4
6.5
CHAPTER 7
7.1
7.2
7.3
7.4
7.5
7.6
Operand Address Addressing ..................................................................................... 115
5.4.1 Data memory addressing ................................................................................................... 115
5.4.2 Implied addressing ............................................................................................................. 120
5.4.3 Register addressing ........................................................................................................... 121
5.4.4 Direct addressing ............................................................................................................... 122
5.4.5 Short direct addressing ...................................................................................................... 123
5.4.6 Special function register (SFR) addressing ...................................................................... 125
5.4.7 Register indirect addressing .............................................................................................. 126
5.4.8 Based addressing ............................................................................................................... 127
5.4.9 Based indexed addressing ................................................................................................ 128
5.4.10 Stack addressing ................................................................................................................ 128
PORT FUNCTIONS ................................................................................................ 129
Port Functions ................................................................................................................ 129
Port Block Diagram ....................................................................................................... 134
6.2.1 Port 0 .................................................................................................................................. 134
6.2.2 Port 1 .................................................................................................................................. 136
Port 2 ( µ PD78014 Subseries) ............................................................................................ 137
6.2.3
Port 2 ( µ PD78014Y Subseries) ......................................................................................... 139
6.2.4
6.2.5 Port 3 .................................................................................................................................. 141
6.2.6 Port 4 .................................................................................................................................. 142
6.2.7 Port 5 .................................................................................................................................. 143
6.2.8 Port 6 .................................................................................................................................. 144
Port Function Control Registers ................................................................................. 146
Port Function Operations ............................................................................................. 152
6.4.1 Writing to input/output port ................................................................................................ 152
6.4.2 Reading from input/output port .......................................................................................... 152
6.4.3 Operations on input/output port ......................................................................................... 153
Mask Options .................................................................................................................. 154
CLOCK GENERATOR ........................................................................................... 155
Clock Generator Functions .......................................................................................... 155
Clock Generator Configuration .................................................................................... 155
Clock Generator Control Register ............................................................................... 157
System Clock Oscillator ............................................................................................... 160
7.4.1 Main system clock oscillator .............................................................................................. 160
7.4.2 Subsystem clock oscillator ................................................................................................. 160
7.4.3 Divider ................................................................................................................................. 163
7.4.4 When no subsystem clocks are used ............................................................................... 163
Clock Generator Operations ........................................................................................ 164
7.5.1 Main system clock operations ........................................................................................... 165
7.5.2 Subsystem clock operations .............................................................................................. 167
Changing System Clock and CPU Clock Settings .................................................... 168
7.6.1 Time required for switchover between system clock and CPU clock .............................. 168
7.6.2 System clock and CPU clock switching procedure .......................................................... 169
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