AS4C1M16E5 Ver la hoja de datos (PDF) - Alliance Semiconductor
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AS4C1M16E5 Datasheet PDF : 22 Pages
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AC parameters common to all waveforms
-45
Symbol Parameter
Min Max
tRC
Random read or write cycle time 75
–
tRP
RAS precharge time
30
–
tRAS
RAS pulse width
45
10K
tCAS
CAS pulse width
8
10K
tRCD
RAS to CAS delay time
15
35
tRAD
RAS to column address delay time 8
25
tRSH
CAS to RAS hold time
10
–
tCSH
RAS to CAS hold time
40
–
tCRP
CAS to RAS precharge time
5
–
tASR
Row address setup time
0
–
tRAH
Row address hold time
8
–
tT
Transition time (rise and fall)
1
50
tREF
Refresh period
–
16
tCP
CAS precharge time
8
–
tRAL
Column address to RAS lead time 25
–
tASC
Column address setup time
0
–
tCAH
Column address hold time
8
–
-50
Min Max
80
–
30
–
50
10K
8
10K
15
35
9
25
10
–
40
–
5
–
0
–
8
–
1
50
–
16
8
–
25
–
0
–
8
–
AS4C1M16E5
-60
Min Max
100
–
40
–
60
10K
10
10K
15
43
10
30
10
–
50
–
5
–
0
–
10
–
1
50
–
16
10
–
30
–
0
–
10
–
Unit Notes
ns
ns
ns
ns
ns 9
ns 10
ns
ns
ns
ns
ns
ns 7,8
ms 6
ns
ns
ns
ns
Read cycle
Symbol
tRAC
tCAC
tAA
tRCS
tRCH
tRRH
Parameter
Access time from RAS
Access time from CAS
Access time from address
Read command setup time
Read command hold time to CAS
Read command hold time to RAS
-45
Min Max
–
45
–
10
–
23
0
–
0
–
0
–
-50
Min Max
–
50
–
12
–
25
0
–
0
–
0
–
-60
Min Max
–
60
–
15
–
30
0
–
0
–
0
–
Unit Notes
ns 9
ns 9,16
ns 10,16
ns
ns 12
ns 12
4/11/01; v.1.0
Alliance Semiconductor
P. 5 of 22
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