M38044F9HKP datasheet(133/387 Pages) RENESAS

133 / 387 page

2-9

APPLICATION

2.2 Interrupt

Rev.1.00 Jan 14, 2005

REJ09B0212-0100Z

3804 Group (Spec.H)

Fig. 2.2.4 Structure of Interrupt request register 1

Fig. 2.2.3 Structure of Interrupt edge selection register

Interrupt edge selection register

b7 b6 b5 b4 b3 b2 b1 b0

Interrupt edge selection register

(INTEDGE: address 003A16)

0: Falling edge active

1: Rising edge active

Name

Functions

At reset R W

INT0 active edge

selection bit

0: Falling edge active

1: Rising edge active

INT1 active edge

selection bit

0: Falling edge active

1: Rising edge active

INT2 active edge

selection bit

0: Falling edge active

1: Rising edge active

INT3 active edge

selection bit

0: Falling edge active

1: Rising edge active

INT4 active edge

selection bit

INT0, INT4 interrupt

switch bit

Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

0: INT00, INT40 interrupt

1: INT01, INT41 interrupt

Interrupt request register 1

b7 b6 b5 b4 b3 b2 b1 b0

Interrupt request register 1

(IREQ1 : address 003C16)

Name

Functions

At reset R W

INT0/Timer Z

interrupt request bit

INT1 interrupt

request bit

Serial I/O1

transmit/SCL, SDA

interrupt request bit

Timer X interrupt

request bit

Timer Y interrupt

request bit

Timer 1 interrupt

request bit

Serial I/O1 receive

interrupt request bit