NEC 78K0/KD1 Series User Manual page 320

CHAPTER 15 SERIAL INTERFACE CSI10
Figure 15-4. Timing in 3-Wire Serial I/O Mode (2/2)
(2) Transmission/reception timing (Type 2; TRMD10 = 1, DIR10 = 0, CKP10 = 0, DAP10 = 1)
SCK10
Read/write trigger
SOTB10 55H (communication data)
SIO10 ABH 56H ADH 5AH B5H 6AH D5H AAH
CSOT10
INTCSI10
CSIIF10
SI10 (input AAH)
SO10
55H is written to SOTB10.
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Preliminary User's Manual U16315EJ1V0UD