WED7PxxxCFA70xxI25
White Electronic Designs
AC CHARACTERISTICS
VCC = 3.3 V 5ꢀ, 5 V 0.5V, -40°C ≤ TA ≤ 85°C
Attribute Memory Read AC Characteristics
SYMBOL
PARAMETER
Read cycle time
Address access time
CE# access time
OE# access time
Output disable time (CE#)
Output disable time (OE#)
Output enable time (CE#)
Output enable time (OE#)
Data valid time (A)
MIN
MAX
—
UNIT
tC
tA
tA
250
—
—
—
—
—
5
250
250
125
100
100
—
tA
tDIS
tDIS
tEN
tEN
tV
ns
5
0
—
—
tSU
Address setup time
30
—
Attribute Memory Write AC Characteristics
SYMBOL
PARAMETER
Write cycle time
Write pulse time
Address setup time
Data setup time (-WE)
Data hold time
MIN
MAX
—
—
—
—
UNIT
tC
tW
tSU
tSU
tH
250
150
30
80
30
ns
—
tREC
Write recover time
30
—
I/O Access Read AC Characteristics
SYMBOL
PARAMETER
Data delay after IORD#
MIN
—
0
165
70
20
5
20
5
0
0
—
—
—
MAX
100
—
—
—
—
—
—
—
UNIT
tD
tH
tW
Data hold following IORD#
IORD# pulse width
Address setup before IORD#
Address hold following IORD#
CE# setup before IORD#
CE# hold following IORD#
REG# setup before IORD#
REG# hold following -IORD
INPACK# delay failing from IORD#
INPACK# delay rising from IORD#
IOIS#16 delay failing from address
IOIS#16 delay rising from address
t
SUA
tHA
tSUCE
tHCE
ns
t
SUREG
tHREG
—
tDFINPACK
tDRINPACK
tDFIOIS16
45
45
35
35
t
DRIOIS16
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2005
Rev. 1
8
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
