R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 105

• Manufacturer Part Number: R5F21334CNFP#U0
• Description: MCU 1KB FLASH 16K ROM 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/33Cr

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: -

R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 75 of 589
7.4.11
7.4.12
After Reset
After Reset
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 018Ch
Address 018Eh
The INTSR register selects which pin is assigned to the INT1 input. To use INT1, set this register.
Set the INTSR register before setting the INT1 associated registers. Also, do not change the setting values in
this register during INT1 operation.
Symbol
Symbol
INT1SEL0 INT1 pin select bit
INT1SEL1
INT1SEL2
Symbol
IICSEL
Bit
Bit
Symbol
SSU/IIC Pin Select Register (SSUIICSR)
INT Interrupt Input Pin Select Register (INTSR)
—
—
—
—
—
—
—
—
—
—
—
—
b7
—
b7
—
0
0
SSU/I
Reserved bit
Nothing is assigned. If necessary, set to 0. When read, the content is 0.
Reserved bits
Nothing is assigned. If necessary, set to 0. When read, the content is 0.
Reserved bit
Nothing is assigned. If necessary, set to 0. When read, the content is 0.
Reserved bits
2
C bus switch bit
b6
—
0
b6
—
0
Bit Name
Bit Name
b5
—
0
b5
—
0
b4
—
0
b4
—
0
0: SSU function selected
1: I
Set to 0.
Set to 0.
INT1SEL2 INT1SEL1 INT1SEL0
b3 b2 b1
Other than above: Do not set.
Set to 0.
Set to 0.
0 0 0: P1_7 assigned
0 0 1: P1_5 assigned
0 1 0: P2_0 assigned
b3
—
0
2
b3
C bus function selected
0
b2
—
0
b2
0
Function
Function
b1
—
0
b1
0
IICSEL
b0
0
b0
—
0
7. I/O Ports
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—