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M38270E1-XXXFP View Datasheet(PDF) - MITSUBISHI ELECTRIC

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M38270E1-XXXFP Datasheet PDF : 70 Pages
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MITSUBISHI MICROCOMPUTERS
3827 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Interrupt request bit
Interrupt enable bit
Interrupt disable flag (I)
BRK instruction
Reset
Interrupt request
Fig. 14 Interrupt control
b7
b0
Interrupt edge selection register
(INTEDGE : address 003A16)
INT0 interrupt edge selection bit
INT1 interrupt edge selection bit
INT2 interrupt edge selection bit
INT3 interrupt edge selection bit
Not used (return “0” when read)
0 : Falling edge active
1 : Rising edge active
b7
b0
Interrupt request register 1
(IREQ1 : address 003C16)
b7
b0
Interrupt request register 2
(IREQ2 : address 003D16)
INT0 interrupt request bit
INT1 interrupt request bit
Serial I/O1 receive interrupt request bit
Serial I/O1 transmit interrupt request bit
Timer X interrupt request bit
Timer Y interrupt request bit
Timer 2 interrupt request bit
Timer 3 interrupt request bit
CNTR0 interrupt request bit
CNTR1 interrupt request bit
Timer 1 interrupt request bit
INT2 interrupt request bit
Serial I/O2 interrupt request bit
Key input interrupt request bit
ADT/AD conversion interrupt request bit
Not used (returns “0” when read)
0 : No interrupt request issued
1 : Interrupt request issued
b7
b0
b7
Interrupt control register 1
(ICON1 : address 003E16)
INT0 interrupt enable bit
INT1 interrupt enable bit
Serial I/O receive interrupt enable bit
Serial I/O transmit interrupt enable bit
Timer X interrupt enable bit
Timer Y interrupt enable bit
Timer 2 interrupt enable bit
Timer 3 interrupt enable bit
Fig. 15 Structure of interrupt-related registers
b0
Interrupt control register 2
(ICON2 : address 003F16)
CNTR0 interrupt enable bit
CNTR1 interrupt enable bit
Timer 1 interrupt enable bit
INT2 interrupt enable bit
Serial I/O2 interrupt enable bit
Key input interrupt enable bit
ADT/AD conversion interrupt enable bit
Not used (returns “0” when read)
(Do not write “1” to this bit.)
0 : Interrupts disabled
1 : Interrupts enabled
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