![](http://datasheet.mmic.net.cn/Renesas-Electronics-America/UPD70F3201YGC-YEU-A_datasheet_99847/UPD70F3201YGC-YEU-A_11.png)
User’s Manual U15905EJ2V1UD
9
4.2.1
V850ES/SA2 ............................................................................................................................... 89
4.2.2
V850ES/SA3 ............................................................................................................................... 90
4.3
Port Configuration....................................................................................................................91
4.3.1
Port 0 .......................................................................................................................................... 92
4.3.2
Port 2 .......................................................................................................................................... 99
4.3.3
Port 3 ........................................................................................................................................ 106
4.3.4
Port 4 ........................................................................................................................................ 113
4.3.5
Port 7 ........................................................................................................................................ 123
4.3.6
Port 8 ........................................................................................................................................ 125
4.3.7
Port 9 ........................................................................................................................................ 127
4.3.8
Port CD ..................................................................................................................................... 143
4.3.9
Port CM ..................................................................................................................................... 146
4.3.10
Port CS ..................................................................................................................................... 152
4.3.11
Port CT...................................................................................................................................... 157
4.3.12
Port DH ..................................................................................................................................... 162
4.3.13
Port DL ...................................................................................................................................... 166
4.4
Cautions ..................................................................................................................................176
4.4.1
Writing data to I/O port .............................................................................................................. 176
4.4.2
Reading data from I/O port........................................................................................................ 176
CHAPTER 5 BUS CONTROL FUNCTION...........................................................................................177
5.1
Features...................................................................................................................................177
5.2
Bus Control Pins ....................................................................................................................177
5.2.1
Pin status when internal ROM, internal RAM, or internal peripheral I/O is accessed ................ 178
5.2.2
Pin status in each operation mode ............................................................................................ 178
5.3
Memory Block Function.........................................................................................................179
5.3.1
Chip select control function ....................................................................................................... 180
5.4
External Bus Interface Mode Control Function...................................................................180
5.5
Bus Access .............................................................................................................................181
5.5.1
Number of clocks for access ..................................................................................................... 181
5.5.2
Bus size setting function............................................................................................................ 181
5.5.3
Access by bus size.................................................................................................................... 182
5.6
Wait Function..........................................................................................................................188
5.6.1
Programmable wait function...................................................................................................... 188
5.6.2
External wait function ................................................................................................................ 189
5.6.3
Relationship between programmable wait and external wait..................................................... 190
5.6.4
Programmable address wait function ........................................................................................ 191
5.7
Idle State Insertion Function .................................................................................................192
5.8
Bus Hold Function .................................................................................................................193
5.8.1
Functional outline ...................................................................................................................... 193
5.8.2
Bus hold procedure ................................................................................................................... 194
5.8.3
Operation in power save mode ................................................................................................. 194
5.9
Bus Priority .............................................................................................................................195
5.10 Boundary Operation Conditions...........................................................................................195