NEC PD78058FY(A) - Manual (Page 347)

347
CHAPTER 17 SERIAL INTERFACE CHANNEL 0 (
µ
PD78058FY SUBSERIES)
(2) Serial operating mode register 0 (CSIM0)
This register sets serial interface channel 0 serial clock, operating mode, operation enable/stop wake-up
function and displays the address comparator match signal.
CSIM0 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets CSIM0 to 00H.
Caution Do not switch the operating mode (3-wire serial I/O/ 2-wire serial I/O/I 2 C bus) while operation
of serial interface channel 0 is enabled. The operation mode should be switched after
stopping the serial operation.