IS41LV16257 ISSI [Integrated Silicon Solution, Inc], IS41LV16257 Datasheet - Page 8

• Manufacturer Part Number: IS41LV16257
• Description: 256K x 16 (4-MBIT) DYNAMIC RAM WITH FAST PAGE MODE
• Manufacturer: ISSI [Integrated Silicon Solution, Inc]

IS41C16257
IS41LV16257
8
AC CHARACTERISTICS
Symbol Parameter
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
ACH
OEH
DS
DH
RWC
RWD
CWD
AWD
PC
RASP
CPA
PRWC
OFF
WHZ
CLCH
CSR
CHR
ORD
REF
T
otherwise noted.)
Column-Address Setup Time to
Precharge during WRITE Cycle
OE
READ-MODIFY-WRITE cycle
Data-In Setup Time
Data-In Hold Time
READ-MODIFY-WRITE Cycle Time
RAS
READ-MODIFY-WRITE Cycle
CAS
Column-Address to
Fast Page Mode READ or WRITE
Cycle Time
RAS
Access Time from
READ-WRITE Cycle Time
Output Buffer Turn-Off Delay from
CAS
Output Disable Delay from
Last
returning HIGH
CAS
CAS
OE
HIDDEN REFRESH Cycle
Refresh Period (512 Cycles)
Transition Time (Rise or Fall)
Hold Time from
Setup Time prior to
to
Pulse Width
CAS
to
or
Setup Time (CBR REFRESH)
Hold Time (CBR REFRESH)
WE
WE
RAS
going LOW to First
(24)
Delay Time during
Delay Time
(13,15,19, 29)
(23)
(15, 22)
CAS
(15, 22)
WE
WE
(14, 20)
RAS
during
Precharge
Delay Time
(1,2,3,4,5,6)
(24)
WE
during
(2, 3)
CAS
(18)
(14)
CAS
(30, 21)
(15)
(30, 20)
(14)
(Recommended Operating Conditions unless
Min. Max.
15
80
45
25
30
12
35 100K
—
40
10
—
8
0
6
3
3
8
8
0
1
-35
Integrated Silicon Solution, Inc. — 1-800-379-4774
—
—
—
—
—
—
—
—
—
21
—
15
15
—
—
—
—
50
8
Min. Max.
140
15
15
10
80
36
49
25
60 100K
—
56
10
10
10
—
0
3
3
0
1
-60
—
—
—
—
—
—
—
—
—
34
—
15
15
—
—
—
—
50
8
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ISSI
DR004-1B
05/24/99
®