R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 89

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• 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 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
11.3
Figure 11.17
A key input interrupt request is generated by one of the input edges of the K10 to K13 pins. The key
input interrupt can be used as a key-on wake-up function to exit wait or stop mode.
The KIiEN (i=0 to 3) bit in the KIEN register can select whether the pins are used as KIi input. The KIiPL
bit in the KIEN register can select the input polarity.
When inputting “L” to the KIi pin which sets the KIiPL bit to “0” (falling edge), the input of the other K10 to
K13 pins are not detected as interrupts. Also, when inputting “H” to the KIi pin which sets the KIiPL bit to
“1” (rising edge), the input of the other K10 to K13 pins are not detected as interrupts.
Figure 11.17 shows a Block Diagram of Key Input Interrupt.
Pull-Up
Transistor
KI3
KI2
KI1
KI0
Key Input Interrupt
Jan 19, 2006
Pull-Up
Transistor
Pull-Up
Transistor
Pull-Up
Transistor
Block Diagram of Key Input Interrupt
Page 74 of 254
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
KI3EN Bit
KI2EN Bit
KI1EN Bit
KI0EN Bit
PD1_3 Bit
PD1_2 Bit
PD1_1 Bit
PD1_0 Bit
KI0EN, KI1EN, KI2EN, KI3EN,
KI0PL, KI1PL, KI2PL, KI3PL: Bits in KIEN register
PD1_0, PD1_1, PD1_2, PD1_3: Bits in PD1 register
KUPIC Register
Interrupt Control
Circuit
Key Input Interrupt
Request
11. Interrupt