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User’s Manual U16890EJ1V0UD
10
4.3.9
4.3.10 Port CT ........................................................................................................................................ 127
4.3.11 Port DH........................................................................................................................................ 129
4.3.12 Port DL......................................................................................................................................... 131
Block Diagrams........................................................................................................................134
Port Register Setting When Alternate Function Is Used......................................................160
Cautions....................................................................................................................................166
4.6.1
Cautions on bit manipulation instruction for port n register (Pn) .................................................. 166
4.6.2
Hysteresis characteristics............................................................................................................ 167
Port CS........................................................................................................................................ 125
4.4
4.5
4.6
CHAPTER 5 BUS CONTROL FUNCTION.......................................................................................... 168
5.1
Features ....................................................................................................................................168
5.2
Bus Control Pins......................................................................................................................169
5.2.1
Pin status when internal ROM, internal RAM, or on-chip peripheral I/O is accessed................... 170
5.2.2
Pin status in each operation mode............................................................................................... 170
5.3
Memory Block Function...........................................................................................................171
5.3.1
Chip select control function.......................................................................................................... 172
5.4
External Bus Interface Mode Control Function.....................................................................172
5.5
Bus Access...............................................................................................................................173
5.5.1
Number of clocks for access........................................................................................................ 173
5.5.2
Bus size setting function.............................................................................................................. 173
5.5.3
Access by bus size ...................................................................................................................... 174
5.6
Wait Function............................................................................................................................181
5.6.1
Programmable wait function ........................................................................................................ 181
5.6.2
External wait function................................................................................................................... 182
5.6.3
Relationship between programmable wait and external wait....................................................... 183
5.6.4
Programmable address wait function........................................................................................... 184
5.7
Idle State Insertion Function...................................................................................................185
5.8
Bus Hold Function ...................................................................................................................186
5.8.1
Functional outline......................................................................................................................... 186
5.8.2
Bus hold procedure...................................................................................................................... 187
5.8.3
Operation in power save mode.................................................................................................... 187
5.9
Bus Priority...............................................................................................................................188
5.10 Bus Timing................................................................................................................................189
5.11 Cautions....................................................................................................................................195
CHAPTER 6 CLOCK GENERATION FUNCTION............................................................................... 196
6.1
Overview ...................................................................................................................................196
6.2
Configuration............................................................................................................................197
6.3
Registers...................................................................................................................................199
6.4
Operation ..................................................................................................................................203
6.4.1
Operation of each clock............................................................................................................... 203
6.4.2
Clock output function ................................................................................................................... 203
6.4.3
External clock input function........................................................................................................ 203
6.5
PLL Function ............................................................................................................................204
6.5.1
Overview...................................................................................................................................... 204
6.5.2
Register ....................................................................................................................................... 204
6.5.3
Usage .......................................................................................................................................... 205