R8C12 datasheet(49/198 Pages) RENESAS

49 / 198 page

R8C/12 Group

Rev.1.20

Jan 27, 2006

page 39 of 181

REJ09B0110-0120

Figure 10.3 Interrupt Control Registers

10.1 Interrupt Overview

Symbol

AddressAfter reset

INT0IC

005D16

XX00X0002

Bit name

Function

Bit symbol

b7b6

b5b4b3

b1b0

ILVL0

POL

Interrupt priority level

select bit

Interrupt request bit

Polarity select bit(3, 4)

Reserved bit

0: Interrupt not requested

1: Interrupt requested

0 : Selects falling edge

1 : Selects rising edge

Set to “0”

ILVL1

ILVL2

NOTES:

1. Only "0" can be written to the IR bit. (Do not write "1").

2. To rewrite the interrupt control register, do so at a point that does not generate the interrupt request for that register.

Refer to the paragraph 19.2.6 “Changing Interrupt Control Registers”.

3. If the INTOPL bit in the INTEN register is set to “1” (both edges), set the POL bit to "0 " (selecting falling edge).

4. The IR bit may be set to “1” (interrupt requested) when the POL bit is rewritten. Refer to the paragraph 19.2.5

“Changing Interrupt Factor”.

Interrupt control register(2)

b7b6

b5b4b3

b1b0

Bit nameFunction

Bit symbol

Symbol

Address

After reset

KUPIC

004D16

XXXXX0002

ADIC

004E16

XXXXX0002

S0TIC, S1TIC

005116, 005316

XXXXX0002

S0RIC, S1RIC

005216, 005416

XXXXX0002

INT2IC

005516

XXXXX0002

TXIC

005616

XXXXX0002

TYIC

005716

XXXXX0002

TZIC

005816

XXXXX0002

INT1IC

005916

XXXXX0002

INT3IC

005A16

XXXXX0002

TCIC

005B16

XXXXX0002

ILVL0

Interrupt priority level

select bit

Interrupt request bit

0 : Interrupt not requested

1 : Interrupt requested

ILVL1

ILVL2

Nothing is assigned.

When write, set to “0”. When read, its content is indeterminate.

0 0 0 : Level 0 (interrupt disabled)

0 0 1 : Level 1

0 1 0 : Level 2

0 1 1 : Level 3

1 0 0 : Level 4

1 0 1 : Level 5

1 1 0 : Level 6

1 1 1 : Level 7

b2b1b0

0 0 0 : Level 0 (interrupt disabled)

0 0 1 : Level 1

0 1 0 : Level 2

0 1 1 : Level 3

1 0 0 : Level 4

1 0 1 : Level 5

1 1 0 : Level 6

1 1 1 : Level 7

b2 b1 b0

RW(1)

(b7-b4)

RW(1)

(b7-b6)

Nothing is assigned.

When write, set to “0”. When read, its content is indeterminate.

(b5)

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