UM61512A
AC Characteristics (continued)
UM61512A-15 UM61512A-20 UM61512A-25
Symbol
Parameter
Unit
Min.
Max.
Min.
Max.
Min.
Max.
Write Cycle
tWC
Write Cycle Time
15
12
0
20
15
0
15
-
20
15
0
25
20
0
25
20
0
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tCW
Chip Enable to End of Write
Address Setup Time of Write
Address Valid to End of Write
Write Pulse Width
tAS
-
tAW
12
9
15
11
0
20
-
20
-
-
tWP
-
tWR
Write Recovery Time
0
-
-
-
-
tWHZ
tDW
Write to Output in High Z
Data to Write Time Overlap
Data Hold from Write Time
Output Active from End of Write
0
8
-
0
13
-
13
-
13
-
7
7
tDH
0
-
0
-
-
-
tOW
5
-
5
-
-
-
Notes: tCHZ1, tCHZ2, tOHZ and tWHZ are defined as the time at which the outputs achieve the open circuit condition and are not
referred to output voltage levels.
Timing Waveforms
(1,2,4)
Read Cycle 1
tRC
Address
tAA
tOH
tOH
DOUT
5
UMC [ UMC CORPORATION ]
