4C4M4EOQ-50TC Ver la hoja de datos (PDF) - Alliance Semiconductor
Número de pieza
componentes Descripción
Fabricante
4C4M4EOQ-50TC Datasheet PDF : 16 Pages
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AC parameters common to all waveforms
Symbol Parameter
Min
tRC
Random read or write cycle time
80
tRP
RAS precharge time
30
tRAS RAS pulse width
50
tCAS CAS pulse width
8
tRCD RAS to CAS delay time
15
tRAD RAS to column address delay time
12
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
tREF Refresh period
–
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
Max
–
–
10K
10K
35
25
–
–
–
–
–
50
32/64
–
–
–
Read cycle
Symbol Parameter
tRAC Access time from RAS
tCAC Access time from CAS
tAA Access time from address
tRCS Read command setup time
tRCH Read command hold time to CAS
tRRH Read command hold time to RAS
-50
Min
Max
–
50
–
12
–
25
0
–
0
–
0
–
AS4C4M4EOQ
AS4C4M4E1Q
-60
Min
Max
100
–
40
–
60
10K
10
10K
15
43
12
30
10
–
50
–
5
–
0
–
10
–
1
50
–
32/64
10
–
30
–
0
–
10
–
Unit Notes
ns
ns
ns
ns
ns 6
ns 7
ns
ns
ns
ns
ns
ns 4,5
ms 17/16
ns
ns
ns
ns
-60
Min
Max
–
60
–
15
–
30
0
–
0
–
0
–
Unit Notes
ns 6
ns 6,13
ns 7,13
ns
ns 9
ns 9
3/22/01; v.1.0
Alliance Semiconductor
P. 6 of 16
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