UM61512A UMC, UM61512A Datasheet - Page 5

• Manufacturer Part Number: UM61512A
• Description: 64k x 8 Bit High Speed CMOS SRAM
• Manufacturer: UMC

AC Characteristics (continued)
Notes: t
Timing Waveforms
Read Cycle 1
Write Cycle
Symbol
t
t
t
t
t
t
t
t
t
t
WC
CW
AS
AW
WP
WR
WHZ
DW
DH
OW
referred to output voltage levels.
CHZ1
Address
D
OUT
, t
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
CHZ2
(1,2,4)
, t
OHZ
and t
Parameter
WHZ
are defined as the time at which the outputs achieve the open circuit condition and are not
t
OH
t
AA
UM61512A-15
Min.
15
12
12
0
9
0
0
7
0
5
5
t
RC
Max.
20
15
15
0
8
-
-
-
-
-
UM61512A-20
Min.
20
15
15
11
0
0
0
7
0
5
Max.
25
20
20
13
0
-
-
-
-
-
UM61512A-25
Min.
25
20
20
13
0
-
-
-
-
-
t
OH
Max.
13
UM61512A
-
-
-
-
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns