Intel MCS48 User Manual page 210

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a.
Input
Mode
RDOR
10
R
\
J
PORT
INPUT
DATA"
BUS
31
X
:x
b.
Output
Mode
\
J
W"
PORT
OUTPUT
X
GLITCH FREE
OUTPUT
DATA*
BUS
-X
X.
•DATA
BUS TIMING
IS
SHOWN
IN
FIGURE
4.
Figure
3.
I/O
Port
Timing
(CE
2
=1-CE,-0)
Figure
4.
Wait
State
Timing
(READY =
0)
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