Renesas 6NM User Manual

Rev.1.10    Jul 01, 2005    page 66 of 318
REJ09B0124-0110

M16C/6N Group (M16C/6NK, M16C/6NM)

9. Interrupt

This document is under development and its contents are subject to change.

0044h
0048h
0049h
005Dh to 005Fh
0057h
0058h
005Bh

Interrupt Control Register 

(1)

INT3IC
C1RECIC/S4IC/INT5IC 

(6)

C1TRMIC/S3IC/INT4IC 

(7)

INT0IC to INT2IC
TA2IC/INT7IC 

(8)

TA3IC/INT6IC 

(9)

TB1IC/INT8IC 

(10)

XX00X000b
XX00X000b
XX00X000b
XX00X000b
XX00X000b
XX00X000b
XX00X000b

b2  b1  b0

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

0 : Interrupt not requested
1 : Interrupt requested

Nothing is assigned. When write, set to "0". 
When read, their contents are indeterminate.

RW

RW

RW

RW

RW 

(2)

-

Interrupt Request Bit

Interrupt Priority Level 
Select Bit

Bit Name

Function

Bit Symbol

RW

Symbol Address 

After 

Reset

b7

b6

b5

b4

b3

b2

b1

b0

ILVL0

IR

0 : Selects falling edge 

(3) (4) (5)

1 : Selects rising edge

ILVL1

ILVL2

-

(b7-b6)

Set to "0"

Polarity Select Bit

POL

Reserved Bit

-

(b5)

RW

0

NOTES:

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

register. For details, refer to 22.7 Interrupt.

2. This bit can only be reset by writing "0" (Do not write "1").
3. If the IFSR10 to IFSR15 bits in the IFSR1 register and the IFSR23 to IFSR25 bits in the IFSR2 register are 

"1" (both edges), set the POL bit in the INT0IC to INT8IC register to "0" (falling edge). INT6IC to INT8IC registers 
are in the 128-pin version.

4. Set the POL bit in the S3IC register to "0" (falling edge) when the IFSR00 bit in the IFSR0 register = 1 and the 

IFSR16 bit in the IFSR1 register = 0 (SI/O3 selected).

5. Set the POL bit in the S4IC register to "0" (falling edge) when the IFSR03 bit in the IFSR0 register = 1 and the 

IFSR17 bit in the IFSR1 register = 0 (SI/O4 selected).

6. Use the IFSR03 bit in the IFSR0 register and the IFSR17 bit in the IFSR1 register to select.
7. Use the IFSR00 bit in the IFSR0 register and the IFSR16 bit in the IFSR1 register to select.
8. Use the IFSR20 bit in the IFSR2 register to select. 

The INT7IC register is only in the 128-pin version. In the 100-pin version, set the IFSR20 bit to "0" (Timer A2).

9. Use the IFSR21 bit in the IFSR2 register to select. 

The INT6IC register is only in the 128-pin version. In the 100-pin version, set the IFSR21 bit to "0" (Timer A3).

10. Use the IFSR22 bit in the IFSR2 register to select. 

The INT8IC register is only in the 128-pin version. In the 100-pin version, set the IFSR22 bit to "0" (Timer B1).