R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 76
R5F21133DFP
Manufacturer Part Number
R5F21133DFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5F21133DFP.pdf
(224 pages)
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Part Number:
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Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/13 Group
Rev.1.20
REJ09B0111-0120
Figure 10.15 Key Input Interrupt
Figure 10.16 KIEN Register
10.3 Key Input Interrupt
A key input interrupt is generated on an input edge of any of the K1
be used as a key-on wakeup function to exit wait or stop mode. KIi input can be enabled or disabled
selecting with the KIiEN (i=0 to 3) bit in the KIEN register. The edge polarity can be rising edge or falling
edge selecting with the KIiPL bit in the KIEN register. Note, however, that while input on any KIi pin which
has had the KIiPL bit set to “0” (falling edge) is pulled low, inputs on all other pins of the port are not
detected as interrupts. Similarly, while input on any KIi pin which has had the KIiPL bit set to “1” (rising
edge) is pulled high, inputs on all other pins of the port are not detected as interrupts.
Figure 10.15 shows a block diagram of the key input interrupt.
Jan 27, 2006
Pull-up
transistor
KI
KI
KI
KI
1
0
3
2
K e y i n p u t e n a b l e r e g i s t e r
b 7
N O T E S :
Pull-up
transistor
1 . T h e I R b i t i n t h e K U P I C r e g i s t e r m a y b e s e t t o “ 1 ” ( i n t e r r u p t r e q u e s t e d ) w h e n t h e K I E N r e g i s t e r i s r e w r i t t e n .
Pull-up
transistor
b 6
Pull-up
transistor
R e f e r t o t h e p a r a g r a p h 1 9 . 2 . 5 “ C h a n g i n g I n t e r r u p t F a c t o r ” i n t h e U s a g e N o t e s R e f e r e n c e B o o k .
b 5
b 4
page 65 of 205
b 3
b 2
b 1
b 0
B i t s y m b o l
KI0EN
KI1EN
KI2EN
KI3EN
KI0PL
KI1PL
KI2PL
KI3PL
PU02 bit in PUR0 register
PD1_3 bit in PD1 register
KI3PL=0
KI3PL=1
KI2PL=0
KI2PL=1
KI1PL=0
KI1PL=1
KI0PL=0
KI0PL=1
S y m b o l
K I E N
K I 0 i n p u t e n a b l e b i t
K I 0 i n p u t p o l a r i t y s e l e c t b i t
K I 1 i n p u t e n a b l e b i t
K I 1 i n p u t p o l a r i t y s e l e c t b i t
K I 2 i n p u t e n a b l e b i t
K I 2 i n p u t p o l a r i t y s e l e c t b i t
K I 3 i n p u t e n a b l e b i t
K I 3 i n p u t p o l a r i t y s e l e c t b i t
KI3EN bit
KI2EN bit
KI1EN bit
KI0EN bit
PD1_3 bit
PD1_2 bit
PD1_1 bit
PD1_0 bit
B i t n a m e
A d d r e s s
0 0 9 8
1 6
_____
A f t e r r e s e t
0 : D i s a b l e d
1 : E n a b l e d
0 : F a l l i n g e d g e
1 : R i s i n g e d g e s
0 : D i s a b l e d
1 : E n a b l e d
0 : F a l l i n g e d g e
1 : R i s i n g e d g e s
0 : D i s a b l e d
1 : E n a b l e d
0 : F a l l i n g e d g e
1 : R i s i n g e d g e s
0 : D i s a b l e d
1 : E n a b l e d
0 : F a l l i n g e d g e
1 : R i s i n g e d g e s
KI0EN, KI1EN, KI2EN, KI3EN,
KI0PL, KI1PL, KI2PL, KI3PL: Bits in KIEN register
PD1_0, PD1_1, PD1_2, PD1_3: Bits in PD1 register
0 0
1 6
_____
_____
0
Interrupt control circuit
Function
to K1
KUPIC register
_____
3
pins. Key input interrupts can
R W
R W
R W
R W
R W
R W
RW
R W
R W
10.3 Key Input Interrupt
Key input interrupt
request
_____
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