AS4C256K16E0-30 ALSC [Alliance Semiconductor Corporation], AS4C256K16E0-30 Datasheet - Page 17

• Manufacturer Part Number: AS4C256K16E0-30
• Description: 5V 256Kx16 CMOS DRAM (EDO)
• Manufacturer: ALSC [Alliance Semiconductor Corporation]

EDO page mode read-modify-write cycle waveform
CAS-before-RAS refresh cycle waveform
RAS only refresh cycle waveform
4/11/01; v.1.1
Address
Address
UCAS,
LCAS
UCAS,
UCAS,
LCAS
LCAS
RAS
RAS
RAS
I/O
WE
OE
I/O
t
ASR
Row Ad
t
RCS
t
RCD
t
RPC
t
RAH
t
t
RAC
t
CPN
CLZ
t
t
CAC
OEA
t
Col Ad
RAD
t
OFF
t
RP
t
RWD
t
ARS
t
t
t
CSH
AWD
AA
t
CSR
t
CRP
Row Address
t
t
CWD
CAH
Data Out
t
Alliance Semiconductor
t
OEZ
t
CAS
PCM
Data In
t
RC
t
RAH
t
DS
t
CHR
t
t
CWL
DH
Col Ad
t
CP
t
RAS
t
t
RAS
RASP
t
t
CLZ
CAC
®
t
CWD
Data Out
t
DS
t
CAH
Data In
t
OED
t
RC
Col Address
t
RPC
t
t
t
t
CLZ
OEA
CAP
CAC
t
AWD
t
t
CWD
Data Out
CAH
t
RP
t
RAL
(WE = OE = V
Data In
AS4C256K16E0
t
WP
t
CWL
t
RWL
t
CRP
(WE = V
t
RP
IH
17 of 24
or V
IH
IL
)
)