
18
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
38C8 Group
Fig. 13 Interrupt control
Fig. 14 Structure of interrupt-related registers
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0 :
o
nterrupt request
ssue
1 : Interrupt request issued
1
:
a
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0
3
1
6
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2
0
nterrupt request
t
CNTR
1
interrupt request bit
Timer 1 interrupt request bit
Not used (returns “0” when read)
Key input interrupt request bit
A-D conversion interrupt request bit
Not used (returns “0” when read)
2 : a
ress 003
16
7
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0 :
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1 : Rising edge active
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2
0
nterrupt ena
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t
CNTR
1
interrupt enable bit
Timer 1 interrupt enable bit
Not used (returns “0” when read)
(Do not write “1” to this bit)
Key input interrupt enable bit
A-D conversion interrupt enable bit
Not used (returns “0” when read)
(Do not write “1” to this bit)
0 :
nterrupts
sa
e
1 : Interrupts enabled
2
:
a
r
e
s
s
0
0
3
1
6
7
0
7
0
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