R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 62

• Manufacturer Part Number: R5F21122FP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/12r

Specifications of R5F21122FP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/12 Group
Rev.1.20
REJ09B0110-0120
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
K e y i n p u t e n a b l e r e g i s t e r
KI
KI
b 7
1
0
3
2
N O T E S :
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 .
b 6
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 .
Pull-up
transistor
Pull-up
transistor
b5
Pull-up
transistor
b 4
b 3
page 50 of 181
b 2
b1
b 0
Bit symbol
K I 0 E N
K I 1 E N
K I 2 E N
K I 3 E N
K I 0 P L
K I 1 P L
KI2PL
K I 3 P L
S y m b o l
PU02 bit in PUR0 register
PD1_3 bit in PD1 register
K I E N
KI3PL=0
KI3PL=1
KI2PL=0
KI2PL=1
KI1PL=0
KI1PL=1
KI0PL=0
KI0PL=1
KI0 input enable bit
KI0 input polarity select bit
KI1 input enable bit
KI1 input polarity select bit
KI2 input enable bit
KI2 input polarity select bit
KI3 input enable bit
KI3 input polarity select bit
KI3EN bit
KI2EN bit
KI1EN bit
KI0EN bit
Bit name
PD1_3 bit
PD1_2 bit
PD1_1 bit
PD1_0 bit
A d d r e s s
0 0 9 8
1 6
_____
A f t e r r e s e t
0 : Disabled
1 : Enabled
0 : Falling edge
1 : Rising edges
0 : Disabled
1 : Enabled
0 : Falling edge
1 : Rising edges
0 : Disabled
1 : Enabled
0 : Falling edge
1 : Rising edges
0 : Disabled
1 : Enabled
0 : Falling edge
1 : Rising edges
0 0
1 6
KI0EN, KI1EN, KI2EN, KI3EN,
KI0PL, KI1PL, KI2PL, KI3PL: Bits in KIEN register
PD1_0, PD1_1, PD1_2, PD1_3: Bits in PD1 register
_____
Function
_____
0
Interrupt control circuit
to K1
KUPIC register
_____
3
pins. Key input interrupts can
R W
R W
R W
R W
R W
RW
R W
R W
R W
10.3 Key Input Interrupt
Key input interrupt
request
_____