W24257A Winbond, W24257A Datasheet - Page 5

• Manufacturer Part Number: W24257A
• Description: 32K X 8 High Speed CMOS Static RAM
• Manufacturer: Winbond

AC CHARACTERISTICS
(V
Read Cycle
Write Cycle
Write Cycle Time
Chip Selection to End of Write
Address Valid to End of Write
Address Setup Time
Write Pulse Width
Write Recovery Time
Data Valid to End of Write
Data Hold from End of Write
Write to Output in High Z
Output Disable to Output in High Z
Output Active from End of Write
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Enable to Output Valid
Chip Selection to Output in Low Z
Output Enable to Output in Low Z
Chip Deselection to Output in High Z
Output Disable to Output in High Z
Output Hold from Address Change
These parameters are sampled but not 100% tested.
These parameters are sampled but not 100% tested.
DD
= 5V 10%, V
PARAMETER
PARAMETER
SS
= 0V, T
CS , WE
A
= 0 to 70 C)
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
SYM.
SYM.
RC
AA
ACS
AOE
CLZ
OLZ
CHZ
OHZ
OH
WC
CW
AW
AS
WP
WR
DW
DH
WHZ
OHZ
OW
MIN.
W24257A-10
MIN.
W24257A-10
10
10
3
0
3
9
9
0
9
0
6
0
-
-
-
-
-
-
-
0
MAX.
MAX.
- 5 -
10
10
6
6
5
5
5
-
-
-
-
-
-
-
-
-
-
-
-
-
MIN.
W24257A-12
MIN.
W24257A-12
12
10
10
10
12
0
0
7
0
-
-
3
0
3
0
-
-
-
-
-
MAX.
MAX.
12
12
7
7
-
-
-
-
-
-
-
-
-
6
6
6
-
-
-
-
Publication Release Date: May 1997
MIN.
MIN.
W24257A-15
W24257A-15
15
13
13
10
15
0
0
9
0
3
0
3
-
-
0
-
-
-
-
-
MAX.
MAX.
15
15
8
8
7
7
7
-
-
-
-
-
-
-
-
-
-
-
-
-
MIN.
MIN.
W24257A-20
W24257A-20
20
17
17
12
10
20
0
0
0
3
0
3
-
-
-
-
-
-
-
0
W24257A
MAX.
MAX.
Revision A14
20
20
10
10
10
10
10
-
-
-
-
-
-
-
-
-
-
-
-
-
UNIT
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS