299CHAPTER 16 SERIAL INTERFACE CHANNEL 0 (μPD78058F SUBSERIES)6 5 4 3 2 1 07SymbolCSIM0 CSIE0 COI WUP CSIM04 CSIM03 CSIM02 CSIM01 CSIM00 FF60H 00H R/WAddress After Reset R/WCSIE00Serial Interface Channel 0 Operation ControlOperation stoppedOperation enabledR/W116.4 Serial Interface Channel 0 OperationsThe following four operating modes are available to the serial interface channel 0.• Operation stop mode• 3-wire serial I/O mode• SBI mode• 2-wire serial I/O mode16.4.1 Operation stop modeSerial transfer is not carried out in the operation stop mode. Thus, power consumption can be reduced. The serialI/O shift register 0 (SIO0) does not carry out shift operation either and thus it can be used as ordinary 8-bit register.In the operation stop mode, the P25/SI0/SB0, P26/SO0/SB1 and P27/SCK0 pins can be used as ordinary input/output ports.(1) Register settingThe operation stop mode is set with serial operating mode register 0 (CSIM0).CSIM0 is set with a 1-bit or 8-bit memory manipulation instruction.RESET input sets CSIM0 to 00H.
