Intel MCS48 User Manual page 177

M8048/M8748/M8035
A.C.
CHARACTERISTICS
(PORT
2
TIMING)
Ta =
-55°
C
to
(100°C
8748/8035/1 25°
C
8048/8035L),
Vcc = +5V ±
10%, Vss
= 0V
Symbol
Parameter
Min.
Max.
Unit
Test Conditions
tCP
Port Control Setup Before
Falling
115 ns
Edge
of
PROG
tpc
Port Control
Hold
After Falling
65
ns
Edge
of
PROG
tPR
PROG
to
Time
P2
Input
Must Be
Valid
860 ns
tPF
Input Data Hold
Time
160
ns
tDP
Output Data Setup Time 230
ns
tPD
Output Data Hold Time
25
ns
tpp
PROG
Pulse
Width 920
ns
tPL
Port 2 I/O
Data Setup 300 ns
tLP
Port 2 I/O
Data Hold
120
ns
PORT
2
TIMING
j
—
EXPANDER
PORT
DC
EXPANDER
PORT
DC
>:
>:
y
—
PORT
2
-3
DATA
X
PORT
2o-3
DATA
X
PORT CONTROL
F
DRT
CONTROL
>:
OUTPUT DATA
xzzx
:c
:c
\
/
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