3819 datasheet(32/218 Pages) RENESAS

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3819 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

Interrupt edge selection register

(INTEDGE : address 003A 16)

INT0 interrupt edge selection bit

INT1/ZCR interrupt edge selection bit

INT2 interrupt edge selection bit

INT3 interrupt edge selection bit

INT4 interrupt edge selection bit

INT4/AD conversion interrupt switch bit

CNTR0 pin active edge switch bit

CNTR1 pin active edge switch bit

0 : Falling edge active

1 : Rising edge active

0 : No interrupt request issued

1 : Interrupt request issued

0 : INT4 interrupt

1 : A-D conversion interrupt

0 : Rising edge count

1 : Falling edge count

Interrupt request register 1

(IREQ1 : address 003C16)

INT0 interrupt request bit

INT1/ZCR interrupt request bit

INT2 interrupt request bit

Remote control/counter overflow

interrupt request bit

Serial I/O1 interrupt request bit

Serial I/O automatic transfer

interrupt request bit

Serial I/O2 interrupt request bit

Serial I/O3 interrupt request bit

Timer 1 interrupt request bit

Timer 2 interrupt request bit

Interrupt request register 2

(IREQ2 : address 003D16)

Timer 3 interrupt request bit

Timer 4 interrupt request bit

Timer 5 interrupt request bit

Timer 6 interrupt request bit

INT3 interrupt request bit

INT4 interrupt request bit

AD conversion interrupt request bit

FLD blanking interrupt request bit

FLD digit interrupt request bit

Not used (returns “0” when read)

0 : Interrupts disabled

1 : Interrupts enabled

Interrupt control register 1

(ICON1 : address 003E16)

INT0 interrupt enable bit

INT1/ZCR interrupt enable bit

INT2 interrupt enable bit

Remote control/counter overflow

interrupt enable bit

Serial I/O1 interrupt enable bit

Serial I/O automatic transfer

interrupt enable bit

Serial I/O2 interrupt enable bit

Serial I/O3 interrupt enable bit

Timer 1 interrupt enable bit

Timer 2 interrupt enable bit

Interrupt control register 2

(ICON2 : address 003F 16)

Timer 3 interrupt enable bit

Timer 4 interrupt enable bit

Timer 5 interrupt enable bit

Timer 6 interrupt enable bit

INT3 interrupt enable bit

INT4 interrupt enable bit

AD conversion interrupt enable bit

FLD blanking interrupt enable bit

FLD digit interrupt enable bit

Not used (returns “0” when read)

(do not write “1” to this bit)

Fig. 8 Interrupt control

Fig. 9 Structure of interrupt-related registers

Interrupt disable flag (I)

Interrupt request

Interrupt request bit

Interrupt enable bit

BRK instruction

Reset

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