R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 71

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Figure 10.10 INTEN and INT0F Registers
10.2 INT Interrupt
10.2.1 INT0 Interrupt
INT0 interrupt is triggered by an INT0 input. When using INT0 interrupts, the INT0EN bit in the INTEN
register must be set to “1” (enabling). The edge polarity is selected using the INT0PL bit in the INTEN
register and the POL bit in the INT0IC register.
The INT0 pin is shared with the external trigger input pin of Timer Z.
Figure 10.10 shows the INTEN and INT0F registers.
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I N T 0 i n p u t f i l t e r s e l e c t r e g i s t e r
Jan 27, 2006
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E x t e r n a l i n p u t e n a b l e r e g i s t e r
b 7
b 7
0 0 0 0 0 0
NOTES:
1. This bit must be set while the INT0STG bit in the PUM register is set to “0” (one-shot trigger disabled).
2. When setting the INT0PL bit to “1” (selecting both edges), the POL bit in the INT0IC must be set to “0”
3. The IR bit in the INT0IC register may be set to “1” (interrupt requested) when the INT0PL bit is rewritten.
b 6
b 6
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________
(selecting falling edge).
Refer to the paragraph 19.2.5 “Changing Interrupt Factor” in the Usage Notes Reference Book.
b 5
b 5
b 4
b4
b 3
b 3
page 60 of 205
b2
0
b 2
b 1
b 1
b 0
b 0
Bit symbol
Bit symbol
INT0F1
INT0F0
(b7-b3)
I N T 0 E N
I N T 0 P L
( b 7 - b 2 )
(b2)
Symbol
S y m b o l
INT0F
I N T E N
Reserved bit
I N T 0 i n p u t e n a b l e b i t
I N T 0 i n p u t p o l a r i t y s e l e c t b i t
R e s e r v e d b i t
INT0 input filter select bit
N o t h i n g i s a s s i g n e d .
W h e n w r i t e , s e t t o “ 0 ” . I f r e a d , i t c o n t e n t i s
Bit name
Bit name
Address
A d d r e s s
001E
0 0 9 6
16
1 6
(1 )
_______
(2 )
XXXXX000
After reset
A f t e r r e s e t
b1 b0
0 0 : No filter
0 1 : Filter with f
1 0 : Filter with f
1 1 : Filter with f
Set to “0”
0 : D i s a b l e d
1 : E n a b l e d
0 : O n e e d g e
1 : B o t h e d g e s
S e t t o “ 0 ”
0 0
1 6
2
Function
F u n c t i o n
i n d e t e r m i n a t e .
1
8
32
sampling
sampling
sampling
10.2 INT Interrupt
R W
RW
R W
R W
R W
R W
R W
RW
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