W2465A Datasheet, PDF (4/9 Pages) Winbond – 8K X 8 High Speed CMOS Static RAM

W2465A
AC CHARACTERISTICS
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C)
Read Cycle
PARAMETER
SYM.
Read Cycle Time
TRC
Address Access Time
TAA
Chip Select
Access Time
CS1
CS2
TACS1
TACS2
Output Enable to Output Valid
TAOE
Chip Selection to
Output in Low Z
CS1
CS2
TCLZ1*
TCLZ2*
Output Enable to Output in Low Z
TOLZ*
Chip Deselection
to Output in High Z
CS1
CS2
TCHZ1*
TCHZ2*
Output Disable to Output in High Z
TOHZ*
Output Hold from Address Change
TOH
* These parameters are sampled but not 100% tested.
Write Cycle
PARAMETER
SYM.
Write Cycle Time
TWC
Chip Selection to
End of Write
CS1
CS2
TCW1
TCW2
Address Valid to End of Write
TAW
Address Setup Time
TAS
Write Pulse Width
TWP
Write Recovery Time
CS1 , WE ^TWR1
CS2
TWR2
Data Valid to End of Write
TDW
Data Hold from End of Write
TDH
Write to Output in High Z
TWHZ*
Output Disable to Output in High Z
TOHZ*
Output Active from End of Write
TOW
* These parameters are sampled but not 100% tested.
W2465A-12
MIN. MAX.
12
-
-
12
-
12
W2465A-15
MIN. MAX.
15
-
-
15
-
15
W2465A-20
MIN. MAX.
20
-
-
20
-
20
UNIT
nS
nS
nS
-
12
-
15
-
20
nS
-
6
-
7
-
10
nS
3
-
3
-
3
-
nS
3
-
3
-
3
-
nS
0
-
0
-
0
-
nS
-
6
-
7
-
10
nS
-
6
-
7
-
10
nS
-
6
-
7
-
10
nS
3
-
3
-
3
-
nS
W2465A-12
MIN. MAX.
12
-
10
-
W2465A-15
MIN. MAX.
15
-
13
-
W2465A-20
MIN. MAX.
20
-
17
-
UNIT
nS
nS
10
-
13
-
17
-
nS
10
-
13
-
17
-
nS
0
-
0
-
0
-
nS
10
-
10
-
12
-
nS
0
-
0
-
0
-
nS
0
-
0
-
0
-
nS
7
-
9
-
10
-
nS
0
-
0
-
0
-
nS
-
7
-
8
-
10
nS
-
7
-
8
-
10
nS
0
-
0
-
0
-
nS
-4-