AS4C4M4F0
AS4C4M4F1
®
Fast page mode early write waveform
tRASP
tRAH
tRWL
RAS
tCRP
tRCD
tPC
tCAH
tCSH
tASC
tWCS
tCAS
tCP
tRSH
CAS
tRAL
tAR
tASR
tRAD
Address
Row
Column
Column
Column
tCWL
tWP
tWCH
tOEH
WE
OE
tHDR
tOED
tDH
tDS
I/O
Data In
Data in
Data in
CAS before RAS refresh waveform
WE = VIH
tRC
tRP
tRAS
RAS
tRPC
tCHR
tCP
tCSR
CAS
DQ
OPEN
RAS only refresh waveform
WE = OE = VIH or VIL
tRC
tRAS
tRP
RAS
tCRP
tRPC
CAS
tASR
tRAH
Address
Row address
4/11/01; v.0.9
Alliance Semiconductor
P. 12 of 18