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