AS4LC256K16E0-35JC Ver la hoja de datos (PDF) - Alliance Semiconductor
Número de pieza
componentes Descripción
Fabricante
AS4LC256K16E0-35JC Datasheet PDF : 25 Pages
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AC parameters common to all waveforms
Std Symbol Parameter
tRC
tRP
tRAS
tCAS
tRCD
tRAD
tRSH(R)
tCSH
tCRP
tASR
tRAH
tT
tREF
tCLZ
Random read or write cycle time
RAS precharge time
RAS pulse width
CAS pulse width
RAS to CAS delay time
RAS to column address delay time
CAS to RAS hold time (read cycle)
RAS to CAS hold time
CAS to RAS precharge time
Row address setup time
Row address hold time
Transition time (rise and fall)
Refresh period
CAS to output in low Z
AS4LC256K16EO
®
-35
Min Max
50
–
15
–
35 75K
6
–
12 18
8
14
10
–
35
–
5
–
0
–
6
–
1.5 50
–
8
0
–
-45
Min Max
80
–
20
–
45 75K
10
–
18 32
13 23
10
–
45
–
5
–
0
–
8
–
1.5 50
–
8
3
–
-60
Min Max Unit
100 – ns
20 – ns
60 75K ns
10 – ns
15 45 ns
15 30 ns
12 – ns
60 – ns
5
– ns
0
– ns
9
– ns
1.5 50 ns
–
8 ms
3
– ns
Notes
6
7
4,5
3
8
Read cycle
Std Symbol
tRAC
tCAC
tAA
tAR(R)
tRCS
tRCH
tRRH
tRAL
tCPN
tOFF
Parameter
Access time from RAS
Access time from CAS
Access time from address
Column add hold from RAS
Read command setup time
Read command hold time to CAS
Read command hold time to RAS
Column address to RAS Lead time
CAS precharge time
Output buffer turn-off time
-35
Min Max
–
35
–
7
–
17
28
–
0
–
0
–
0
–
18
–
4
–
0
8
-45
Min Max
– 45
– 10
–
22
35
–
0
–
0
–
0
–
25
–
5
–
0 10
-60
Min Max Unit Notes
– 60 ns
6
– 10 ns
6,13
– 30 ns
7,13
40 – ns
0
– ns
0
– ns
9
0
– ns
9
30 – ns
5
– ns
0 10 ns
8,10
4/11/01; V.1.1
Alliance Semiconductor
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