UPD780031AY Datasheet, PDF (51/70 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD780031AY, 780032AY, 780033AY, 780034AY
External data access (no wait):
A8 to A15
AD0 to AD7
ASTB
RD
WR
tADD2
Lower 8-bit address
tADS
tADH
tASTH
Hi-Z
tRDAD
tRDD2
Higher 8-bit address
Read data
tRDH
Write data
Hi-Z
tASTRD
tRDL2
tASTWR
tRDWD
tWRWD
tWDS
tWRL1
tWDH
tWRADH
External data access (wait insertion):
A8 to A15
AD0 to AD7
ASTB
RD
WR
WAIT
Lower 8-bit
address
tADS tADH
tASTH
tADD2
Hi-Z
tRDAD
tRDD2
tASTRD
Higher 8-bit address
Read data
tRDH
Write data
Hi-Z
tRDL2
tASTWR
tRDWD
tWRWD
tWDS
tWRL1
tWDH
tWRADH
tRDWT2
tWTL
tWTRD
tWRWT
tWTL
tWTWR
Data Sheet U14045EJ1V0DS00
51