MOSEL VITELIC
AC Characteristics
(Cont’d)
30
Symbol
t
WP
t
WCR
t
RWL
t
DS
t
DH
t
WOH
t
OED
t
RWC
t
RRW
t
CWD
t
RWD
t
CRW
t
AWD
t
PC
t
CP
t
CAR
t
CAP
t
DHR
t
CSR
t
RPC
t
CHR
t
PCM
t
T
t
REF
Parameter
Write Pulse Width
Write Command Hold Time
from RAS
Write Command to RAS
Lead Time
Data in Setup Time
Data in Hold Time
Write to OE Hold Time
OE to Data Delay Time
Read-Modify-Write Cycle Time
Read-Modify-Write Cycle
RAS Pulse Width
CAS to WE Delay
RAS to WE Delay in Read-
Modify-Write Cycle
CAS Pulse Width (RMW)
Col. Address to WE Delay
Fast Page Mode Read
or Write Cycle Time
CAS Precharge Time
Column Address to RAS
Setup Time
Access Time from Column
Precharge
Data in Hold Time Referenced
to RAS
CAS Setup Time CAS- before-RAS
Refresh
RAS to CAS Precharge Time
CAS Hold Time CAS-before-
RAS Refresh
Fast Page Mode Read-Modify-Write
Cycle Time
Transition Time (Rise and Fall)
Refresh Interval (256 Cycles)
26
35
40
45
50
V53C1664H
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit Notes
5
26
5
28
5
30
6
35
7
40
ns
ns
10
11
12
13
14
ns
0
5
5
5
100
65
0
5
5
5
105
70
0
5
6
6
110
75
0
6
7
7
115
80
0
7
8
8
130
87
ns
ns
ns
ns
ns
ns
14
14
14
14
26
50
28
54
30
58
32
62
34
68
ns
ns
12
12
44
32
19
46
35
21
48
38
23
50
41
25
52
42
28
ns
ns
ns
12
3
16
4
18
5
20
6
22
7
24
ns
ns
19
21
23
25
27
ns
7
28
30
35
40
ns
10
10
10
10
10
ns
0
7
0
8
0
8
0
10
0
12
ns
ns
56
58
60
65
70
ns
1.5
50
4
1.5
50
4
1.5
50
4
1.5
50
4
1.5
50
4
ns
ms
15
17
Notes:
1. I
CC
is dependent on output loading when the device output is selected. Specified I
CC
(max.) is measured with the
output open.
V53C1664H Rev. 1.0 February 1998
6
MOSEL [ MOSEL VITELIC, CORP ]
