IS41LV16257B-35K Ver la hoja de datos (PDF) - Integrated Silicon Solution
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IS41LV16257B-35K Datasheet PDF : 20 Pages
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IS41LV16257B
ISSI ®
AC CHARACTERISTICS(1,2,3,4,5,6) (Recommended Operating Conditions unless otherwise noted.)
Symbol Parameter
tACH
Column-Address Setup Time to CAS
Precharge during WRITE Cycle
tOEH
OE Hold Time from WE during
READ-MODIFY-WRITE cycle(18)
tDS
Data-In Setup Time(15, 22)
tDH
Data-In Hold Time(15, 22)
tRWC READ-MODIFY-WRITE Cycle Time
tRWD
RAS to WE Delay Time during
READ-MODIFY-WRITE Cycle(14)
tCWD
CAS to WE Delay Time(14, 20)
tAWD
Column-Address to WE Delay Time(14)
tPC
tRASP
tCPA
tPRWC
Fast Page Mode READ or WRITE
Cycle Time(24)
RAS Pulse Width
Access Time from CAS Precharge(15)
READ-WRITE Cycle Time(24)
tOFF
Output Buffer Turn-Off Delay from
CAS or RAS(13,15,19, 29)
tWHZ
Output Disable Delay from WE
tCLCH Last CAS going LOW to First CAS
returning HIGH(23)
tCSR
CAS Setup Time (CBR REFRESH)(30, 20)
tCHR
CAS Hold Time (CBR REFRESH)(30, 21)
tORD
OE Setup Time prior to RAS during
HIDDEN REFRESH Cycle
tREF
Refresh Period (512 Cycles)
tT
Transition Time (Rise or Fall)(2, 3)
-35
Min. Max.
15
—
8
—
0
—
6
—
80
—
46
—
25
—
30
—
14
—
35 100K
—
20
45
—
3
10
3
10
10
—
8
—
8
—
0
—
—
8
2
50
-60
Min. Max.
15 —
15 —
0
—
10 —
140 —
80 —
36 —
49 —
25 —
60 100K
— 35
60 —
3
15
3
15
10 —
10 —
10 —
0
—
—
8
2
50
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
8
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
04/22/05
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