UPD75P218 Datasheet, PDF (23/36 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

Serial Transfer Timing
tKCY
tKL
tKH
SCK
SI
SO
Interrupt Input Timing
tSIK
tKSI
Input data
tKSO
Output data
tINTL
tINTH
INT0, 1, 2, 4
RESET Input Timing
tRSL
RESET
µPD75P218
23