UM61512A
AC Characteristics (continued)
Symbol
Parameter
UM61512A-15
Min.
Write Cycle
t
WC
t
CW
t
AS
t
AW
t
WP
t
WR
t
WHZ
t
DW
t
DH
t
OW
Write Cycle Time
Chip Enable to End of Write
Address Setup Time of Write
Address Valid to End of Write
Write Pulse Width
Write Recovery Time
Write to Output in High Z
Data to Write Time Overlap
Data Hold from Write Time
Output Active from End of Write
15
12
0
12
9
0
0
7
0
5
20
15
0
15
-
-
8
-
-
-
20
15
0
15
11
0
0
7
0
5
25
20
0
20
-
-
13
-
-
-
25
20
0
20
-
-
13
-
-
-
-
-
-
-
-
-
13
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Max.
UM61512A-20
Min.
Max.
UM61512A-25
Min.
Max.
Unit
Notes: t
CHZ1
, t
CHZ2
, t
OHZ
and t
WHZ
are defined as the time at which the outputs achieve the open circuit condition and are not
referred to output voltage levels.
Timing Waveforms
Read Cycle 1
(1,2,4)
t
RC
Address
t
AA
t
OH
t
OH
D
OUT
5
UMC [ UMC CORPORATION ]
