R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 366

• 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 336 of 589
22.2.13 UART2 Pin Select Register 0 (U2SR0)
22.2.14 UART2 Pin Select Register 1 (U2SR1)
After Reset
After Reset
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 018Ah
Address 018Bh
The U2SR0 register selects which pin is assigned to the UART2 I/O. To use the I/O pin for UART2, set this
register.
Set the U2SR0 register before setting the UART2 associated registers. Also, do not change the setting value in
this register during UART2 operation.
The U2SR1 register selects which pin is assigned to the UART2 I/O. To use the I/O pin for UART2, set this
register.
Set the U2SR1 register before setting the UART2 associated registers. Also, do not change the setting value in
this register during UART2 operation.
Symbol
Symbol
RXD2SEL0 RXD2/SCL2 pin select bit
RXD2SEL1
TXD2SEL0 TXD2/SDA2 pin select bit
TXD2SEL1
CLK2SEL0 CLK2 pin select bit
CTS2SEL0 CTS2/RTS2 pin select bit
Bit
Bit
Symbol
Symbol
—
—
—
—
—
—
—
—
—
—
b7
b7
—
—
0
0
Reserved bit
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 bit
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.
b6
b6
—
—
0
0
RXD2SEL1 RXD2SEL0
Bit Name
Bit Name
b5
—
b5
0
0
CTS2SEL0
b4
0
b4
0
b1 b0
Set to 0.
b5 b4
Set to 0.
0: CLK2 pin not used
1: P3_5 assigned
Set to 0.
0: CTS2/RTS2 pin not used
1: P3_3 assigned
Set to 0.
0 0: TXD2/SDA2 pin not used
0 1: P3_7 assigned
1 0: P3_4 assigned
1 1: Do not set.
0 0: RXD2/SCL2 pin not used
0 1: P3_4 assigned
1 0: P3_7 assigned
1 1: P4_5 assigned
b3
—
0
b3
—
0
b2
—
0
b2
—
0
Function
Function
TXD2SEL1 TXD2SEL0
b1
—
0
b1
0
22. Serial Interface (UART2)
CLK2SEL0
b0
0
b0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—
—