R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 180
R5F21334CNFP#U0
Manufacturer Part Number
R5F21334CNFP#U0
Description
MCU 1KB FLASH 16K ROM 32-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/33Cr
Datasheet
1.R5F21331CNFPU0.pdf
(622 pages)
Specifications of R5F21334CNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
27
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21334CNFP#U0R5F21334CNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 150 of 589
11.5
Figure 11.11
Table 11.7
KI0
KI1
KI2
KI3
A key input interrupt request is generated by one of the input edges of pins K10 to K13. 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 is be used to select whether or not the pins are used as the KIi input.
The KIiPL bit in the KIEN register is also be used to select the input polarity.
When inputting “L” to the KIi pin, which sets the KIiPL bit to 0 (falling edge), the input to the other pins K10 to
K13 is not detected as interrupts. When inputting “H” to the KIi pin, which sets the KIiPL bit to 1 (rising edge), the
input to the other pins K10 to K13 is not also detected as interrupts.
Figure 11.11 shows a Block Diagram of Key Input Interrupt. Table 11.7 lists the Pin Configuration of Key Input
Interrupt.
Pull-up
transistor
Pin Name
KI3
KI2
KI1
KI0
Key Input Interrupt
Pull-up
transistor
Pull-up
transistor
Pull-up
transistor
Pin Configuration of Key Input Interrupt
Block Diagram of Key Input Interrupt
Input
Input
Input
Input
I/O
KI0 interrupt input
KI1 interrupt input
KI2 interrupt input
KI3 interrupt input
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
Function
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
Interrupt control circuit
KUPIC register
Key input
interrupt request
11. Interrupts
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