Multiple Interrupt Sources - Intel MCS48 User Manual

Family of single chip microcomputers
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APPLICATION
EXAMPLES
DEVICE
1
DEVICE
3
DEVICE
4
OPEN
COLLECTOR
INVERTERS
>>
>-
+5V
10K
INT
8049
8048
8748
8035
8039
P10
ANY
P11
UNDEDICATED
PORT
LINES
P12
CAN
BE
USED
All
devices equal
priority
Processor
polls
Port
1
to
determine
interrupting
device
MULTIPLE INTERRUPT
SOURCES
5-5

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