UPD70F3218 Datasheet, PDF (10/884 Pages) NEC – 32-Bit Single-Chip Microcontrollers

4.3.8 Port 8 ........................................................................................................................................... 118
4.3.9 Port 9 ........................................................................................................................................... 121
4.3.10 Port CD ........................................................................................................................................ 129
4.3.11 Port CM........................................................................................................................................ 130
4.3.12 Port CS ........................................................................................................................................ 132
4.3.13 Port CT ........................................................................................................................................ 134
4.3.14 Port DH ........................................................................................................................................ 136
4.3.15 Port DL......................................................................................................................................... 138
4.4 Block Diagrams ........................................................................................................................ 141
4.5 Port Register Setting When Alternate Function Is Used...................................................... 170
4.6 Cautions .................................................................................................................................... 178
4.6.1 Cautions on bit manipulation instruction for port n register (Pn) .................................................. 178
4.6.2 Hysteresis characteristics ............................................................................................................ 179
CHAPTER 5 BUS CONTROL FUNCTION .......................................................................................... 180
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
Features .................................................................................................................................... 180
Bus Control Pins ...................................................................................................................... 181
5.2.1 Pin status when internal ROM, internal RAM, or on-chip peripheral I/O is accessed................... 182
5.2.2 Pin status in each operation mode............................................................................................... 182
Memory Block Function .......................................................................................................... 183
5.3.1 Chip select control function.......................................................................................................... 184
External Bus Interface Mode Control Function..................................................................... 184
Bus Access ............................................................................................................................... 185
5.5.1 Number of clocks for access........................................................................................................ 185
5.5.2 Bus size setting function .............................................................................................................. 185
5.5.3 Access by bus size ...................................................................................................................... 186
Wait Function............................................................................................................................ 193
5.6.1 Programmable wait function ........................................................................................................ 193
5.6.2 External wait function................................................................................................................... 194
5.6.3 Relationship between programmable wait and external wait ....................................................... 195
5.6.4 Programmable address wait function........................................................................................... 196
Idle State Insertion Function................................................................................................... 197
Bus Hold Function ................................................................................................................... 198
5.8.1 Functional outline......................................................................................................................... 198
5.8.2 Bus hold procedure...................................................................................................................... 199
5.8.3 Operation in power save mode .................................................................................................... 199
Bus Priority ............................................................................................................................... 200
Bus Timing................................................................................................................................ 201
Cautions .................................................................................................................................... 207
CHAPTER 6 CLOCK GENERATION FUNCTION............................................................................... 208
6.1 Overview ................................................................................................................................... 208
6.2 Configuration............................................................................................................................ 209
6.3 Registers ................................................................................................................................... 211
6.4 Operation .................................................................................................................................. 215
6.4.1 Operation of each clock ............................................................................................................... 215
6.4.2 Clock output function ................................................................................................................... 215
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User’s Manual U16889EJ1V0UD