White Electronic Designs
AC CHARACTERISTICS - READ CYCLE
Parameter
Read Cycle Time
Address Access Time
Chip Enable Access Time
Chip Enable to Output in Low Z (1)
Chip Disable to Output in High Z (1)
Output Hold from Address Change
Output Enable to Output Valid
Output Enable to Output in Low Z (1)
Output Disable to Output in High Z(1)
Symbol
JEDEC
t
AVAV
t
AVQV
t
ELQV
t
ELQX
t
EHQZ
t
AVQX
t
GLQV
t
GLQX
t
GHQZ
Alt.
t
RC
t
AA
t
ACS
t
CLZ
t
CHZ
t
OH
t
OE
t
OLZ
t
OHZ
12ns
Min
12
Max
12
12
2
7
3
5
2
4
2
5
3
6
2
6
3
8
3
8
2
8
15ns
Min
15
Max
15
15
3
8
3
8
17ns
Min
17
Max
17
17
3
10
20ns
Min
20
Max
20
20
EDI8L32128C
25n
Min
25
Max
25
25
3
10
3
10
0
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTE 1: Parameter guaranteed, but not tested.
FIG. 4 READ CYCLE 1 - W# HIGH, G#, E# LOW
t
AVAV
A
ADDRESS 1
t
AVQV
Q
ADDRESS 2
t
AVQX
DATA 1
DATA 2
FIG. 5 READ CYCLE 2 - W# HIGH
t
AVAV
A
t
AVQV
E#
t
ELQX
G#
t
ELQV
t
EHQZ
t
GLQX
Q
t
GLQV
t
GHQZ
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
August, 2002
Rev. 6
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
