Intel MCS 51 - Page 252

in~.
87C51GBHARDWARE DESCRIPTION
.r-bl
Il@hti
l“’
F Prbrny
.’.’,,. ‘.,.’.’.. .........
II ,
htwrupl
“-%: I-El-’;:-;’”’”
l.:,
,,:.:;::;[:.]1 -
l—
,,.:.,.,.....,:,.,.,...,
‘b
:
.:’:::’:#
<d: d
~
,,::.,,.:.,,.:..,....(:..
,. ,“. .,” ,“ ,.’..
‘::*&#””: ?“’
m
OA ‘i:!37Rtt’”--A
‘u 1“’:’”:”’’”:”n
I-wll H I
UllII
LOW.*
v PtiOluy
lnt0mu$4
270897
-33
Figure33.InterruptControlSystem
644