3819 datasheet(154/218 Pages) RENESAS

154 / 218 page

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2. APPLICATION

MITSUBISHI MICROCOMPUTER

3819 Group

2.6 Interrupt interval determination function

3819 Group USER’S MANUAL

Fig. 2.6.3 Structure of Interrupt edge selection register

Fig. 2.6.4 Structure of Interrupt request register 1

Interrupt request register 1

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Interrupt request reigster 1 (IREQ1) [Address:3C16]

Name

INT0 interrupt request bit

INT1/ZCR interrupt request bit

0 : No interrupt request

1 : Interrupt request

0 : No interrupt request

1 : Interrupt request

0 : No interrupt request

1 : Interrupt request

0 : No interrupt request

1 : Interrupt request

Serial I/O 1 interrupt request

bit

Serial I/O automatic transfer

interrupt request bit

Serial I/O 2 interrupt request

bit

Timer 1 interrupt request bit

0 : No interrupt request

1 : Interrupt request

Serial I/O 3 interrupt request

bit

Timer 2 interrupt request bit

0 : No interrupt request

1 : Interrupt request

0 : No interrupt request

1 : Interrupt request

0 : No interrupt request

1 : Interrupt request

T "0" is set by software, but not "1."

INT2 interrupt request bit

Remote control/counter

overflow interrupt request bit

Interrupt edge selection register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Interrupt edge selecton reigster (INTEDGE) [Address:3A16]

Name

INT0 interrupt edge selection

bit

INT1/ZCR interrupt edge

selection bit

INT2 interrupt edge selection

bit

0 : Falling edge active

1 : Rising edge active

0 : Falling edge active

1 : Rising edge active

0 : Falling edge active

1 : Rising edge active

0 : Falling edge active

1 : Rising edge active

INT3 interrupt edge selection

bit

0 : Falling edge active

1 : Rising edge active

INT4 interrupt edge selection

bit

CNTR0 pin active edge switch

bit

CNTR1 pin active edge switch

bit

INT4/A-D conversion interrupt

switch bit

0 : INT4 interrupt

1 : A-D conversion interrupt

0 : Falling edge active

1 : Rising edge active

0 : Falling edge active

1 : Rising edge active

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