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8022
A.C. CHARACTERISTICS
TA=O·C
to
70·C,
Vcc=5.5V
±
1V,
vss=ov
Test Conditions:
Cl
=80
pF
tCy=8.38
j.ls
Expander
Operation
Normal
Operation
~
Symbol
tcp
tpc
tPR
top
tpo
tpF
tpp
tpRl
tpl
tlP
tpFl
tll
Parameter
Port Control Setup Before Falling Edge of
PROG
Port Control Hold After Falling Edge of PROG
PROG
to
Time P2 Input Must Be Valid
Output
Data Setup Time
Output Data Hold Time
Input Data Hold Time
PROG
Pulse Width
ALE
to
Time P2 Input Must Be Valid
Output
Data Setup Time
Output Data Hold Time
Input Data Hold Time
ALE
Pulse Width
PORT 2 TIMING
NORMAL OPERATION
Min. Max.
Unit
Notes
0.5
j.lS
0.8
j.ls
1.0
j.ls
7.0
j.lS
8.3
j.lS
0
.150
j.ls
8.3
j.ls
3.6
j.ls
0.8
j.lS
1.6
j.lS
0
j.lS
3.9 23.0
j.lS
tCy=8.38
j.lS
for
min
ALEr\
~
______________________
~n~
______
~
______________
_
PORT
===x
------------------------------~-----------------------------------
OUTPUT
~
ALE/\
~
______________________
~r_\~
______________________
__
PORT
INPUT
------------------~(~
_____
D_AT_A
____
~)(~
____________________________
__
I·
IpAL
---ooj·1
H
tpFL
EXPANDER OPERATION
ALE n
~
______________________
~r_\~
______________________
__
PAOG
PORT
OUTPUT
\~------------------~/
J!Cd-------------'''------------f
..
1
___________________________________
~~
_______________
~)(
DATA
x=====
L,,,...L.J
,.
.--r;;;-l
ALEF\
~
______________________
~r_\~
________________________
_
PROG
\~------------------~I
PORT
INPUT
~
DATA F
----------------------------~
~--------------~~
~"c-.j
r--'''---1
'"
6-54 AFN-Q0187A-04