UPD75518 NEC, UPD75518 Datasheet - Page 172

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

172
Serial Transfer Timing
Bus release signal transfer:
Command signal transfer:
Interrupt Input Timing
RESET Input Timing
INT0, INT1, INT2
SB0 and SB1
SB0 and SB1
RESET
and INT4
KR0-KR7
SCK
SCK
t
t
KSB
KSB
t
t
INTL
RSL
t
t
SBL
SBK
t
t
t
KL3
KL4
SBH
t
t
KCY3
KCY4
t
INTH
t
t
t
t
t
SBK
KSO3
KSO4
KH3
KH4
t
t
KL3
KL4
t
t
SIK3
SIK4
t
t
KCY3
KCY4
t
t
t
t
KSO3
KSO4
KH3
KH4
t
t
KSI3
KSI4
t
t
SIK3
SIK4
PD75518(A)
t
t
KSI3
KSI4