M38220E1-FP Datasheet

  • M38220E1-FP

  • SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

  • 980.52KB

  • 78页

  • MITSUBISHI   MITSUBISHI

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MITSUBISHI MICROCOMPUTERS
3822 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Interrupt request bit
Interrupt enable bit
Interrupt disable flag (I)
BRK instruction
Reset
Interrupt request
Fig. 18 Interrupt control
b7
b0
Interrupt edge selection register
(INTEDGE : address 003A
16
)
INT
0
INT
1
INT
2
INT
3
interrupt edge selection bit
interrupt edge selection bit
interrupt edge selection bit
interrupt edge selection bit
Not used (return 鈥?鈥?when read)
0 : Falling edge active
1 : Rising edge active
b7
b0
Interrupt request register 1
(IREQ1 : address 003C
16
)
INT
0
interrupt request bit
INT
1
interrupt request bit
Serial I/O receive interrupt request bit
Serial I/O transmit interrupt request bit
Timer X interrupt request bit
Timer Y interrupt request bit
Timer 2 interrupt request bit
Timer 3 interrupt request bit
b7
b0
Interrupt request register 2
(IREQ2 : address 003D
16
)
CNTR
0
interrupt request bit
CNTR
1
interrupt request bit
Timer 1 interrupt request bit
INT
2
interrupt request bit
INT
3
interrupt request bit
Key input interrupt request bit
ADT/AD conversion interrupt request bit
Not used (returns 鈥?鈥?when read)
0 : No interrupt request issued
1 : Interrupt request issued
b7
b0
Interrupt control register 1
(ICON1 : address 003E
16
)
INT
0
interrupt enable bit
INT
1
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
b7
b0
Interrupt control register 2
(ICON2 : address 003F
16
)
CNTR
0
interrupt enable bit
CNTR
1
interrupt enable bit
Timer 1 interrupt enable bit
INT
2
interrupt enable bit
INT
3
interrupt enable bit
Key input interrupt enable bit
ADT/AD conversion interrupt enable bit
Not used (returns 鈥?鈥?when read)
(Do not write 鈥?鈥?to this bit.)
0 : Interrupts disabled
1 : Interrupts enabled
Fig. 19 Structure of interrupt-related registers
23

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