AS4C256K16F0-25JC ALSC [Alliance Semiconductor Corporation], AS4C256K16F0-25JC Datasheet - Page 13

• Manufacturer Part Number: AS4C256K16F0-25JC
• Description: 5V 256K X 16 CMOS DRAM (Fast Page Mode)
• Manufacturer: ALSC [Alliance Semiconductor Corporation]

Lower byte write waveform
Read-modify-write waveform
4/11/01; V.0.9.1
Upper I/O
Lower I/O
Address
UCAS,
LCAS
Address
RAS
I/O
WE
OE
UCAS
LCAS
RAS
WE
OE
t
ASR
t
ASR
t
CRP
Row Address
t
t
CRP
RAH
Row Address
t
t
RAD
CRP
t
t
RAH
t
RAD
t
RCD
t
RAC
RCS
t
t
AR
Alliance Semiconductor
RCD
t
ACS
t
AWR
Col Address
t
t
OEA
AA
t
Column Address
CSH
t
t
RWD
ASC
t
RAS
t
t
CSH
RAS
t
t
DS
AWD
t
t
CLZ
OEZ
t
t
CAC
RAL
Data Out
t
RAL
t
Data In
RWC
t
t
t
CAH
CWD
®
RC
t
RSH
t
t
CAH
CAS
t
RSH
t
DH
t
t
t
WP
t
t
CAS
CWL
OED
OEH
t
Data In
t
DS
RWL
t
DH
t
t
RP
RPC
t
CWL
t
WP
t
RWL
AS4C256K16FO
t
RP
t
CRP
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