
R8C/14 Group, R8C/15 Group 11. Interrupt
Rev.2.10 Jan 19, 2006 Page 62 of 253
REJ09B0164-0210
Figure 11.4 INT0IC Register
INT0 Interrupt Control Register
(2)
Symbol Address After Reset
INT01C
005Dh XX00X000b
Bit Symbol Bit Name Function RW
NOTES :
1.
2.
3.
4.
—
(b7-b6)
—
Nothing is assigned. When write, set to “0”.
When read, its content is indeterminate.
Only “0” can be written to the IR bit. (Do not write “1”.)
—
(b5)
Reserved Bit Set to “0”
RW
POL
Polarity Sw itch Bit
(4)
0 : Selects falling edge
1 : Selects rising edge
(3)
RW
IR
Interrupt Request Bit 0 : Requests no interrupt
1 : Requests interrupt
RW
(1)
ILV L0 RW
Interrupt Priority Level Select Bit
b2 b1 b0
0 0 0 : Level 0 (interrupt disable)
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
ILV L1 RW
ILV L2 RW
b0
0
To rew rite the interrupt control register, rewrite it when the interrupt request w hich is applicable for its register is not
generated. Refer to
20.2.6 Changing Interrupt Control Registers.
If the INTOPL bit in the INTEN register is set to “1” (both edges), set the POL bit to “0” (selects falling edge).
The IR bit may be set to “1” (requests interrupt) when the POL bit is rewritten. Refer to
20.2.5 Changing Interrupt
Factor.
b7 b6 b5 b4 b3 b2 b1
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