R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 398

• 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 18.7
18.4.2
CAN0 Control Register
(b15)
b7 b6 b5 b4
NOTES:
b7 b6 b5 b4
NOTES:
1.
2.
3.
4. Irrespective of setting the PD6 register, P6_1 and P6_2 function as CAN I/O pins.
1.
2.
3.
4.
Figure 18.7 shows the C0CTLR Register.
When set the Reset bit to 1 (CAN reset/initialization mode), check that the State_Reset bit in the C0STR register is set
to 1 (reset mode).
Set bits LoopBack, MsgOrder, BasicCAN, BusErrEn, Sleep, and PortEn only w hen the CAN module is in CAN
reset/initialization mode.
To use CAN0 w ake up interrupt, set bits Sleep and PorEn to 1.
Set bits TSPreScale and RXOnly only w hen the CAN module is in CAN operation mode.
When set the TSReset bit to 1 (forcible reset of time stamp counter), TSReset bit is automatically set to 0 (normal
operation mode) after the C0TSR register is set to 0000h.
When set the RetBusOff bit to 1 (Fforcible return from bus off), the RetBusOff bit is automatically set to 0 (normal
operation mode) after registers C0RECR and C0TECR are set to 0000h.
When listen-only mode is selected, do not request a transmission.
C0CTLR Register
b3 b2 b1 b0
b3 b2 b1 b0
C0CTLR Register
(b8)
TSPreScale
RetBusOff
Bit Symbol
BasicCAN
Bit Symbol
LoopBack
MsgOrder
BusErrEn
TSReset
C0CTLR
C0CTLR
RXOnly
(b7-b6)
Symbol
Symbol
PortEn
Reset
Sleep
Page 376 of 501
(b7)
(b4)
—
—
—
CAN module reset bit
Loop back mode select bit
Message order select bit
Basic CAN mode select bit
Bus error interrupt enable bit
Sleep mode select bit
CAN port enable bit
Nothing is assigned. If necessary, set to 0.
When read, the content is indeterminate.
Time stamp prescaler
Time stamp counter reset bit
Return from bus off command
bit
Nothing is assigned. If necessary, set to 0.
When read, the content is indeterminate.
Listen-only mode select bit
Nothing is assigned. If necessary, set to 0.
When read, the content is indeterminate.
(3)
Address
Bit Name
Address
Bit Name
1310h
1311h
(2,3)
(1)
(2,3)
(1)
(2)
(2)
(2)
(1)
(2)
(2)
b1 b0
0 0 : 1 Period of 1 bit time
0 1 : 1 Period of 1/2 bit time
1 0 : 1 Period of 1/4 bit time
1 1 : 1 Period of 1/8 bit time
0 : Operation mode
1 : Reset/initialization mode
0 : Loop back mode disabled
1 : Loop back mode enabled
0 : Word access
1 : Byte access
0 : Basic CAN mode disabled
1 : Basic CAN mode enabled
0 : Bus error interrupt disabled
1 : Bus error interrupt enabled
0 : Sleep mode disabled
1 : Sleep mode enabled; clock supply stopped
0 : I/O port function
1 : CTx/CRx function
0 : Nothing is occurred
1 : Forcible reset of time stamp counter
0 : Nothing is occurred
1 : Forcible return from bus off
0 : Listen-only mode disabled
1 : Listen-only mode enabled
After Reset
After Reset
XX0X0000b
X0000001b
Function
Function
(4)
(4)
18. CAN Module
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
—
—
—