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W24L257A Datasheet(PDF) 4 Page - Winbond

Part No. W24L257A
Description  32K X 8 High Speed CMOS Static RAM
Download  9 Pages
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
Logo WINBOND - Winbond

W24L257A Datasheet(HTML) 4 Page - Winbond

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W24L257A
- 4 -
AC Characteristics, continued
(VDD = 3.3V
± 5%, VSS = 0V, Ta = 0 to 70° C)
(1) Read Cycle
PARAMETER
SYM.
W24L257A-12
W24L257A-15
W24L257A-20
UNIT
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Read Cycle Time
TRC
12
-
15
-
20
-
nS
Address Access Time
TAA
-
12
-
15
-
20
nS
Chip Select Access Time
TACS
-
12
-
15
-
20
nS
Output Enable to Output Valid
TAOE
-
6
-
8
-
10
nS
Chip Selection to Output in Low Z
TCLZ*
4
-
4
-
4
-
nS
Output Enable to Output in Low Z
TOLZ*
0
-
0
-
0
-
nS
Chip Deselection to Output in High Z
TCHZ*
-
6
-
7
-
10
nS
Output Disable to Output in High Z
TOHZ*
-
6
-
7
-
10
nS
Output Hold from Address Change
TOH
3
-
3
-
3
-
nS
∗These parameters are sampled but not 100% tested
(2) Write Cycle
PARAMETER
SYM.
W24L257A-12
W24L257A-15
W24L257A-20
UNIT
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Write Cycle Time
TWC
12
-
15
-
20
-
nS
Chip Selection to End of Write
TCW
10
-
13
-
17
-
nS
Address Valid to End of Write
TAW
10
-
13
-
17
-
nS
Address Setup Time
TAS
0
-
0
-
0
-
nS
Write Pulse Width
TWP
10
-
10
-
12
-
nS
Write Recovery Time
CS
, WE
TWR
1
-
1
-
1
-
nS
Data Valid to End of Write
TDW
7
-
9
-
10
-
nS
Data Hold from End of Write
TDH
0
-
0
-
0
-
nS
Write to Output in High Z
TWHZ*
-
7
-
8
-
10
nS
Output Disable to Output in High Z
TOHZ*
-
7
-
8
-
10
nS
Output Active from End of Write
TOW
0
-
0
-
0
-
nS
∗These parameters are sampled but not 100% tested


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