3822 datasheet(34/328 Pages) RENESAS

34 / 328 page

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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

3822 Group

Interrupt edge selection register

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)

(INTEDGE : address 003A16)

Interrupt request register 1

INT0 interrupt request bit

INT1 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

Interrupt control register 1

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

0 : No interrupt request issued

1 : Interrupt request issued

(IREQ1 : address 003C16)

(ICON1 : address 003E16)

Interrupt request register 2

CNTR0 interrupt request bit

CNTR1 interrupt request bit

Timer 1 interrupt request bit

INT2 interrupt request bit

INT3 interrupt request bit

Key input interrupt request bit

ADT/AD conversion interrupt request bit

Not used (returns “0” when read)

(IREQ2 : address 003D16)

Interrupt control register 2

CNTR0 interrupt enable bit

CNTR1 interrupt enable bit

Timer 1 interrupt enable bit

INT2 interrupt enable bit

INT3 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

(ICON2 : address 003F16)

0 : Falling edge active

1 : Rising edge active

Fig. 14 Interrupt control

Fig. 15 Structure of interrupt-related registers

Interrupt request bit

Interrupt enable bit

Interrupt disable flag (I)

BRK instruction

Reset

Interrupt request

3822 Datasheet(PDF) 34 Page - Renesas Technology Corp

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