AS4C4M4F0
AS4C4M4F1
®
Fast page mode cycle
-50
-60
Symbol
tCPA
Parameter
Min
–
Max
Min
–
Max
Unit
Notes
13
Access time from CAS precharge
RAS pulse width
28
35
tRASP
tPC
50
30
10
80
12
100K
60
35
10
85
15
100K
Read-write cycle time
–
–
–
–
–
–
–
–
tCP
CAS precharge time (fast page)
Fast page mode RMW cycle
Page mode CAS pulse width (RMW)
tPCM
tCRW
Output enable
-50
-60
Symbol
tCLZ
Parameter
Min
0
Max
–
Min
0
Max
–
Unit
ns
Notes
8
CAS to output in Low Z
RAS hold time referenced to OE
OE access time
tROH
tOEA
tOED
tOEZ
8
–
10
–
–
ns
–
13
–
15
–
ns
OE to data delay
13
0
15
0
ns
Output buffer turnoff delay from OE
OE command hold time
OE to output in Low Z
Output buffer turn-off time
13
–
15
–
ns
8
tOEH
tOLZ
10
0
10
0
ns
–
–
ns
tOFF
0
13
0
15
ns
8,10
Self refresh cycle
-50
-60
Std
Symbol
Parameter
Min
100
Max
–
Min
100
Max
–
Unit
µs
Notes
RAS pulse width
(CBR self refresh)
tRASS
RAS precharge time
(CBR self refresh)
tRPS
90
8
–
–
105
10
–
–
ns
ns
CAS hold time
(CBR self refresh)
tCHS
4/11/01; v.0.9
Alliance Semiconductor
P. 7 of 18
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
