UPD78P324 Datasheet, PDF (60/80 Pages) NEC – 16-/8-Bit Single-Chip Microcomputers

Serial Operation
SCK
SO
SI
tCYSK
tWSKL
tWSKH
tDSKTX
tSRXSK
tHSKRX
Interrupt Input Timing
NMI
tWNIH
0.8VDD
0.8V
tWNIL
µPD78P324, 78P324(A)
1NTPn
Remark n = 0-6
tWInH
tWInL
60