38K2 datasheet(37/358 Pages) RENESAS

37 / 358 page

FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 15, 2006

page 18 of 130

38K2 Group

REJ09B0338-0200

HARDWARE

Fig. 13 Interrupt control

Fig. 14 Structure of interrupt-related registers

Interrupt request bit

Interrupt enable bit

Interrupt disable flag (I)

BRK instruction

Reset

Interrupt request

Interrupt edge selection register

INT0 interrupt edge selection bit

Not used (return “0” when read)

INT1 interrupt edge selection bit

Not used (return “0” when read)

(INTEDGE : address 0FF316)

Interrupt request register 1

USB bus reset interrupt request bit

USB SOF interrupt request bit

USB device interrupt request bit

EXB interrupt request bit

INT0 interrupt request bit

Timer X interrupt request bit

Timer 1 interrupt request bit

Timer 2 interrupt request bit

Interrupt control register 1

0 : No interrupt request issued

1 : Interrupt request issued

(IREQ1 : address 003C16)

(ICON1 : address 003E16)

Interrupt request register 2

INT1 interrupt request bit

USB HUB interrupt request bit

Serial I/O receive interrupt request bit

Serial I/O transmit interrupt request bit

CNTR0 interrupt request bit

Key-on wake-up interrupt request bit

A/D conversion interrupt request bit

Nothing is arranged for this bit. This is a

write disabled bit. When this bit is read

out, the contents are “0”.

(IREQ2 : address 003D16)

Interrupt control register 2

0 : Interrupts disabled

1 : Interrupts enabled

(ICON2 : address 003F16)

0 : Falling edge active

1 : Rising edge active

USB bus reset interrupt enable bit

USB SOF interrupt enable bit

USB device interrupt enable bit

EXB interrupt enable bit

INT0 interrupt enable bit

Timer X interrupt enable bit

Timer 1 interrupt enable bit

Timer 2 interrupt enable bit

INT1 interrupt enable bit

USB HUB interrupt enable bit

Serial I/O receive interrupt enable bit

Serial I/O transmit interrupt enable bit

CNTR0 interrupt enable bit

Key-on wake-up interrupt enable bit

A/D conversion interrupt enable bit

Fix this bit to “0”.

✽ “0” can be set by software, but “1”

cannot be set.

✽ “0” can be set by software, but “1”

cannot be set.

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