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8155/8156/8155-2/8156-2
WAVEFORMS
a.
Read Cycle
CE
(8155
I
\-
\
OR
I
I
-'
/
'\
CE
18156
101M
\
/
\
.
tA:D
~
ADDRESS
~
DATA
VALID
~
-+--
t
AL
______
---
t
LA
-----
AL
E
If-
l\
(
f----tLL~
I
...
t
RDE
..
I--
tRDF
-
~I'-l
~tRD_
V
I\-
----t
Lc
-
- t
eL
-------
!----------
tee
~
----------
tRY
~
b.
Write
Cycle
CE
18155
I
\
\
OR
CE 18156
I
I
-'[\
/
IO/i>
n
\
,V
~
ADO_7
~
ADDRESS
K
)
DATA VALID
-"K
I---
t
AL
--
I---tLA
-
-tow---------+-
-tel-
ALE
l
1\
V
\-
--
t
lL
-
----
t
Le
---:1
-
two
------.
-,1
"--
I~
tcc~
---------
tRY
-----------
Figure 12. 8155/8156 Read/Write Timing Diagrams
6-93