White Electronic Designs
SYMBOL
t
SU
t
H
t
W
t
SU
A
t
H
A
t
SU
CE
t
H
CE
t
SU
REG
t
H
REG
t
DF
IOIS16
t
DR
IOIS16
PARAMETER
Data setup before IOWR#
Data hold following IOWR#
IOWR# pulse width
Address setup before IOWR#
Address hold following IOWR#
CE# setup before IOWR#
CE# hold following IOWR#
REG# setup before IOWR#
REG# hold following IOWR#
IOIS16# delay failing from address
IOIS16# delay rising from address
MIN
60
30
165
70
20
5
20
5
0
—
—
WED7PxxxCFA70xxI25
I/O Access Write AC Characteristics
MAX
—
—
—
—
—
—
—
—
—
35
35
UNIT
ns
Common Memory Access Read AC Characteristics
SYMBOL
t
A
t
DIS
t
SU
t
H
t
SU
t
H
PARAMETER
OE# access time
Output disable time (OE#)
Address setup time
Address hold time
CE# setup before OE#
OE# hold following OE#
MIN
—
—
30
20
0
20
MAX
125
100
—
—
—
—
UNIT
ns
Common Memory Access Write AC Characteristics
SYMBOL
t
SU
t
H
t
W
t
H
t
SU
t
SU
t
REC
t
H
PARAMETER
Data setup before WE#
Data hold following WE#
Write pulse width
Address hold time
Address setup time
CE# setup time
Write recover time
CE# hold following WE#
MIN
80
30
150
20
30
0
30
20
MAX
—
—
—
—
—
—
—
—
UNIT
ns
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2005
Rev. 1
9
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
