R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 397

• 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
18.4
Figure 18.6
18.4.1
CAN0 Message Control Register i (i = 0 to 15)
b7 b6 b5 b4
NOTES:
1.
2.
3.
4.
Figure 18.6 shows the C0MCTLi Register.
CAN SFR Registers
Set the C0MCTLi register only w hen the CAN module is in CAN operation mode.
When w rite, set to 0. Each bit is set w hen the CAN module enters the respective state.
In Basic CAN mode, the RemActive bit serves as data format identification flag. When receiving a date frame, the
RemActive bit is set to 0 and w hen receiving a remote frame, the RemActive bit is set to 1.
One slot can not be defined as reception slot and transmission slot at the same time.
C0MCTLi Register (i = 0 to 15)
b3 b2 b1 b0
C0MCTLi Register
C0MCTL0 to
C0MCTL15
RemActive
Bit Symbol
TrmActive
New Data
SentData
InvalData
MsgLost
RspLock
RecReq
Remote
TrmReq
Symbol
Page 375 of 501
Successful reception flag
Successful transmission
flag
Under reception flag
Under transmission flag
Overw rite flag
Remote frame
transmission/reception
status flag
Auto response lock mode
select bit
Remote frame
corresponding slot select bit
Reception slot request bit
Transmission slot request
bit
(4)
1300h to 130Fh
Address
Bit Name
(3)
(1)
(4)
When set to reception slot
0 : The content of the slot is read or still under
1 : The CAN module has stored new data in the
When set to transmission slot
0 : Transmission is not started or completed yet
1 : Transmission is successfully completed
When set to reception slot
0 : The message is valid
1 : The message is invalid
When set to transmission slot
0 : Waiting for bus idle or completion of arbitration
1 : Transmitting
When set to reception slot
0 : No message is overw ritten
1 : New message is overw ritten
0 : Data frame transmission/reception status
1 : Remote frame transmission/reception status
When set to reception remote frame slot
0 : After a remote frame is received, it w ill be
1 : After a remote frame is received, no
0 : Slot not corresponding to remote frame
1 : Slot corresponding to remote frame
0 : Not reception slot
1 : Reception slot
0 : Not transmission slot
1 : Transmission slot
processing by the CPU
slot
(The message is being updated)
answ ered automatically
transmission w ill be started as long as this bit is
set to 1 (Not responding)
After Reset
Function
00h
18. CAN Module
RO
RO
RO
RW
RW
RW
RW
RW
RO
RO
RO
(2)
(2)
(2)