V53C8256H35 データシートの表示（PDF） - Mosel Vitelic Corporation
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V53C8256H35 Datasheet PDF : 18 Pages
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MOSEL VITELIC
V53C8256H
AC Characteristics (Cont’d)
JEDEC
# Symbol
29 tWL1WH1
30 tRL1WH1
31 tWL1RH1
32 tDVWL2
33 tWL1DX
34 tWL1GL2
35 tGH2DX
36 tRL2RL2
(RMW)
37 tRL1RH1
(RMW)
38 tCL1WL2
39 tRL1WL2
40 tCL1CH1
41 tAVWL2
42 tCL2CL2
43 tCH2CL2
44 tAVRH1
45 tCH2QV
46 tRL1DX
47 tCL1RL2
48 tRH2CL2
49 tRL1CH1
50 tCL2CL2
(RMW)
tT
Symbol
tWP
tWCR
tRWL
tDS
tDH
tWOH
tOED
tRWC
35
40
45
50
Parameter
Min. Max. Min. Max. Min. Max. Min. Max. Unit Notes
Write Pulse Width
5
5
6
7
ns
Write Command Hold Time
28
30
35
40
ns
from RAS
Write Command to RAS Lead 12
12
13
14
ns
Time
Data in Setup Time
0
0
0
0
ns 14
Data in Hold Time
4
5
6
7
ns 14
Write to OE Hold Time
5
6
7
8
ns 14
OE to Data Delay Time
5
6
7
8
ns 14
Read-Modify-Write Cycle Time 105
110
115
130
ns
tRRW
tCWD
tRWD
tCRW
tAWD
tPC
tCP
tCAR
tCAP
tDHR
tCSR
tRPC
tCHR
tPCM
tT
tREF
Read-Modify-Write Cycle
70
75
80
87
ns
RAS Pulse Width
CAS to WE Delay
28
30
32
34
ns 12
RAS to WE Delay in Read-
54
58
62
68
ns 12
Modify-Write Cycle
CAS Pulse Width (RMW)
46
48
50
52
ns
Col. Address to WE Delay
35
38
41
42
ns 12
Fast Page Mode
21
23
25
28
ns
Read or Write Cycle Time
CAS Precharge Time
4
5
6
7
ns
Column Address to RAS
18
20
22
24
ns
Setup Time
Access Time from Column
Precharge
20
22
24
27 ns
7
Data in Hold Time Referenced 28
30
35
40
ns
to RAS
CAS Setup Time
10
10
10
10
ns
CAS-before-RAS Refresh
RAS to CAS Precharge Time 0
0
0
0
ns
CAS Hold Time
8
CAS-before-RAS Refresh
8
10
12
ns
Fast Page Mode Read-Modify- 58
60
65
70
ns
Write Cycle Time
Transition Time (Rise and Fall) 3 50 3 50 3 50 3 50 ns 15
Refresh Interval (512 Cycles)
8
8
8
8 ms 17
V53C8256H Rev. 1.2 July 1997
6
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