White Electronic Designs
AC CHARACTERISTICS - WRITE CYCLE
Parameter
Write Cycle Time
Chip Enable to End of Write
Address Setup Time
Address Valid to End of Write
Write Pulse Width
Write Recovery Time
Data Hold Time
Write to Output in High Z (1)
Data to Write Time
Output Active from End of Write (1)
NOTE: Parameter guaranteed, but not tested.
Symbol
JEDEC
t
AVAV
t
ELWH
t
ELEH
t
AVWL
t
AVEL
t
AVWH
t
AVEH
t
WLWH
t
WLEH
t
WHAX
t
EHAX
t
WHDX
t
EHDX
t
WLQZ
t
DVWH
t
DVEH
t
WHQX
Alt.
t
WC
t
CW
t
CW
t
AS
t
AS
t
AW
t
AW
t
WP
t
WP
t
WR
t
WR
t
DH
t
DH
t
WHZ
t
DW
t
DW
t
WLZ
12
8
8
0
0
9
9
9
9
0
0
0
0
0
5
5
2
5
12ns
Min
Max
15
9
9
0
0
10
10
10
10
0
0
0
0
0
6
6
2
6
15ns
Min
Max
17
10
10
0
0
12
12
12
12
0
0
0
0
0
8
8
2
7
17ns
Min
Max
20
15
15
0
0
15
15
15
15
0
0
0
0
0
8
8
2
7
20ns
Min
Max
EDI8L32128C
25ns
Min
25
20
20
0
0
15
15
15
15
0
0
0
0
0
12
12
2
10
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
FIG. 6 WRITE CYCLE 1 - W# CONTROLLED
t
AVAV
A
t
GLAX
G#
t
AVWH
t
ELWH
E#
t
WHAX
t
AVWL
W#
t
WLWH
t
DVWH
t
WHDX
D
DATA VALID
t
WLQZ
Q
HIGH Z
t
WHQX
FIG. 7 WRITE CYCLE 2 - E# CONTROLLED
t
AVAV
A
t
AVEH
t
ELEH
E#
t
AVEL
W#
t
DVEH
D
Q
HIGH Z
t
EHDX
t
WLEH
t
EHAX
DATA VALID
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
August, 2002
Rev. 6
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
