
Rev.1
Page 11
Read Cycle
Write Cycle
Parameter
Symbol
AD404M42V
Unit
Notes
-5
-6
Min
Max
Min
Max
Access time from RAS
t
RAC
-
50
-
60
ns
12
Access time from CAS
t
CAC
-
14
-
15
ns
13, 14
Access time from column address
t
AA
-
25
-
30
ns
14, 15
Access time from OE
t
OEA
-
12
-
15
ns
Read command setup time
t
RCS
0
-
0
-
ns
7
Read command hold time to CAS
t
RCH
0
-
0
-
ns
10, 16
Read command hold time to RAS
t
RRH
0
-
0
-
ns
16
Output buffer turn-off time
t
OFF
0
12
0
15
ns
17
Output buffer turn-off time from OE
t
OEZ
0
12
0
15
ns
17
Parameter
Symbol
AD404M42V
Unit
Notes
-5
-6
Min
Max
Min
Max
Write command setup time
t
WCS
0
-
0
-
ns
7, 18
Write command hold time
t
WCH
8
-
10
-
ns
Write command pulse width
t
WP
8
-
10
-
ns
Write command to RAS lead time
t
RWL
13
-
15
-
ns
Write command to CAS lead time
t
CWL
8
-
10
-
ns
Data-in setup time
t
DS
0
-
0
-
ns
19
Data-in hold time
t
DH
8
-
10
-
ns
19
WE to Data-in delay
t
WED
10
-
10
-
ns