IC41C4400x and IC41LV4400x Series
AC CHARACTERISTICS (Continued)(1,2,3,4,5,6)
(Recommended Operating Conditions unless otherwise noted.)
-50
Min. Max.
-60
Min. Max.
Symbol
Parameter
Units
tACH
Column-Address Setup Time to CAS
Precharge during WRITE Cycle
15
−
15
−
ns
tOEH
OE Hold Time from WE during
8
−
10
−
ns
READ-MODIFY-WRITE cycle(18)
tDS
Data-In Setup Time(15, 22)
Data-In Hold Time(15, 22)
0
8
−
−
−
−
0
−
−
−
−
ns
ns
ns
ns
tDH
10
tRWC
tRWD
READ-MODIFY-WRITE Cycle Time
108
64
133
77
RAS to WE Delay Time during
READ-MODIFY-WRITE Cycle(14)
tCWD
tAWD
tPC
CAS to WE Delay Time(14, 20)
26
39
20
−
−
−
32
47
25
−
−
−
ns
ns
ns
Column-Address to WE Delay Time(14)
EDO Page Mode READ or WRITE
Cycle Time
tRASP
tCPA
RAS Pulse Width in EDO Page Mode
Access Time from CAS Precharge(15)
EDO Page Mode READ-WRITE
Cycle Time
50
−
56
100K
30
60
−
68
100K
35
ns
ns
ns
tPRWC
−
−
tCOH
tOFF
Data Output Hold after CAS LOW
5
0
−
12
5
0
−
15
ns
ns
Output Buffer Turn-Off Delay from
(13,15,19, 24)
CAS or RAS
tWHZ
tCSR
tCHR
tORD
Output Disable Delay from WE
3
5
8
0
10
−
−
3
5
10
−
−
ns
ns
ns
ns
CAS Setup Time (CBR REFRESH)(20, 25)
CAS Hold Time (CBR REFRESH)( 21, 25)
OE Setup Time prior to RAS during
HIDDEN REFRESH Cycle
10
0
−
−
tREF
tT
Auto Refresh Period
2,048 Cycles
4,096 Cycles
−
−
1
32
64
−
−
1
32
64
ms
ns
Transition Time (Rise or Fall)(2, 3)
50
50
AC TEST CONDITIONS
Output load:
Two TTL Loads and 50 pF
Input timing reference levels: VIH = 2.4V, VIL = 0.8V
Output timing reference levels: VOH = 2.0V, VOL = 0.8V
8
Integrated Circuit Solution Inc.
DR007-0B 10/17/2002
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
