R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 301

• Manufacturer Part Number: R5F21238DFP#U0
• Description: IC R8C/23 MCU FLASH 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238DFP#U0

• Core Size: 16/32-Bit
• Program Memory Size: 64KB (64K x 8)
• Peripherals: POR, Voltage Detect, WDT
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Number Of I /o: 41
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• No. Of I/o's: 41
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Embedded Interface Type: CAN, I2C, UART
• Rohs Compliant: Yes
• Cpu Family: R8C
• Device Core Size: 16b
• Frequency (max): 20MHz
• Interface Type: I2C/UART
• Total Internal Ram Size: 3KB
• # I/os (max): 41
• Number Of Timers - General Purpose: 5
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 12-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 15.5
UARTi Transmit/Receive Control Register 0 (i = 0 or 1)
UARTi Transmit/Receive Control Register 1 (i = 0 or 1)
b7 b6 b5 b4
NOTE:
b7 b6 b5 b4
NOTES:
1.
1.
2. Set the UiRRM bit to 0 (disables continuous receive mode) in UART mode.
If the BRG count source is sw itched, set the UiBRG register again.
The RI bit is set to 0 w hen the higher byte of the UiRB register is read out.
b3 b2
b3 b2 b1 b0
0
Registers UiC0 and UiC1 (i = 0 or 1)
b1 b0
Bit Symbol
Bit Symbol
UFORM
(b7-b6)
Symbol
CKPOL
Symbol
TXEPT
UiRRM
U0C0
U1C0
CLK0
CLK1
U0C1
U1C1
UiIRS
Page 279 of 501
NCH
(b2)
(b4)
RE
TE
—
—
RI
—
TI
BRG count source select
bit
Reserved bit
Transmit register empty
flag
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Data output select bit
CLK polarity select bit
Transfer format select bit 0 : LSB first
Transmit enable bit
Transmit buffer empty flag
Receive enable bit
Receive complete flag
UARTi transmit interrupt cause
select bit
UARTi continuous receive mode
enable bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
(1)
Address
Bit Name
(2)
00A4h
00ACh
Address
Bit Name
00A5h
00ADh
(1)
b1 b0
0 0 : Selects f1
0 1 : Selects f8
1 0 : Selects f32
1 1 : Do not set
Set to 0
0 : Data in transmit register (during transmit)
1 : No data in transmit register (transmit completed)
0 : TXDi pin is a pin of CMOS output
1 : TXDi pin is a pin of N-channel open drain output
0 : Transmit data is output at falling edge of transfer
1 : Transmit data is output at rising edge of transfer
1 : MSB first
clock and receive data is input at rising edge
clock and receive data is input at falling edge
0 : Disables transmit
1 : Enables transmit
0 : Data in UiTB register
1 : No data in UiTB register
0 : Disables receive
1 : Enables receive
0 : No data in UiRB register
1 : Data in UiRB register
0 : Transmit buffer empty (TI = 1)
1 : Transmit completed (TXEPT = 1)
0 : Disables continuous receive mode
1 : Enables continuous receive mode
After Reset
00001000b
00001000b
Function
After Reset
00000010b
00000010b
Function
15. Serial Interface
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
—
—