IS41C44002 ICSI [Integrated Circuit Solution Inc], IS41C44002 Datasheet - Page 18

• Manufacturer Part Number: IS41C44002
• Description: 4Mx4 bit Dynamic RAM with EDO Page Mode
• Manufacturer: ICSI [Integrated Circuit Solution Inc]

HIDDEN REFRESH CYCLE
IC41C4400x and IC41LV4400x Series
CBR
CBR
CBR
CBR
CBR REFRESH CYCLE
Notes:
1. A Hidden Refresh may also be performed after a Write Cycle. In this case, WE = LOW and OE = HIGH.
2. t
18
OFF
ADDRESS
is referenced from rising edge of RAS or CAS, whichever occurs last.
RAS
CAS
I/O
RAS
CAS
OE
I/O
t
RPC
t
CP
t
t
CRP
ASR
Row
t
RP
(Addresses; WE, OE = DON'T CARE)
t
CHR
(1)
(WE = HIGH; OE = LOW)
t
t
RAH
RAD
t
t
CSR
RCD
Open
t
t
ASC
RAS
t
RAS
t
AR
t
Column
CLZ
t
RPC
t
RAC
t
RAL
t
OE
t
AA
t
Open
CAC
t
CAH
t
t
RP
RSH
t
ORD
t
RP
t
Valid Data
CSR
t
RAS
t
CHR
t
RAS
t
OFF
Integrated Circuit Solution Inc.
t
CHR
(2)
Open
t
OD
DR007-0B 10/17/2002