3819 datasheet(162/218 Pages) RENESAS

162 / 218 page

148

2. APPLICATION

MITSUBISHI MICROCOMPUTER

3819 Group

2.7 Zero cross detection circuit

3819 Group USER’S MANUAL

Fig. 2.7.3 Structure of Interrupt request register 1

Fig. 2.7.4 Structure of Interrupt control 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

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

INT2 interrupt request bit

Remote control/counter

overflow interrupt request bit

Interrupt control register 1

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Interrupt control register 1 (ICON1) [Address:3E16]

Name

INT0 interrupt enable bit

INT1/ZCR interrupt enable bit

0 : Interrupt disabled

1 : Interrupt enabled

0 : Interrupt disabled

1 : Interrupt enabled

0 : Interrupt disabled

1 : Interrupt enabled

0 : Interrupt disabled

1 : Interrupt enabled

Serial I/O 2 interrupt enable

bit

Timer 1 interrupt enable bit

0 : Interrupt disabled

1 : Interrupt enabled

Serial I/O 3 interrupt enable

bit

Timer 2 interrupt enable bit

0 : Interrupt disabled

1 : Interrupt enabled

0 : Interrupt disabled

1 : Interrupt enabled

0 : Interrupt disabled

1 : Interrupt enabled

Serial I/O 1 interrupt enable

bit

Serial I/O automatic transfer

interrupt enable bit

INT2 interrupt enable bit

Remote control/counter

overflow interrupt enable bit

0 : No interrupt request

1 : Interrupt request

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