W24L257A
AC Characteristics, continued
(V
DD
= 3.3V
±
5%, V
SS
= 0V, Ta = 0 to 70° C)
(1) Read Cycle
PARAMETER
SYM.
W24L257A-12
MIN.
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
T
RC
T
AA
T
ACS
T
AOE
T
CLZ
*
T
OLZ
*
T
CHZ
*
T
OHZ
*
T
OH
12
-
-
-
4
0
-
-
3
MAX.
-
12
12
6
-
-
6
6
-
W24L257A-15
MIN.
15
-
-
-
4
0
-
-
3
MAX.
-
15
15
8
-
-
7
7
-
W24L257A-20
MIN.
20
-
-
-
4
0
-
-
3
MAX.
-
20
20
10
-
-
10
10
-
nS
nS
nS
nS
nS
nS
nS
nS
nS
UNIT
∗These
parameters are sampled but not 100% tested
(2) Write Cycle
PARAMETER
SYM.
W24L257A-12
MIN.
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
CS
,
WE
W24L257A-15
MIN.
15
13
13
0
10
1
9
0
-
-
0
MAX.
-
-
-
-
-
-
-
-
8
8
-
W24L257A-20
MIN.
20
17
17
0
12
1
10
0
-
-
0
MAX.
-
-
-
-
-
-
-
-
10
10
-
UNIT
MAX.
-
-
-
-
-
-
-
-
7
7
-
T
WC
T
CW
T
AW
T
AS
T
WP
T
WR
T
DW
T
DH
T
WHZ
*
T
OHZ
*
T
OW
12
10
10
0
10
1
7
0
-
-
0
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
∗These
parameters are sampled but not 100% tested
-4-
WINBOND [ WINBOND ]
