R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 419

• 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
18.14.2 Performing CAN Configuration
If the Reset bit in the C0CTLR register is changed from 0 (operation mode) to 1 (reset/initialization mode) in
order to place the CAN module from CAN operation mode into CAN reset/initialization mode, always be sure
to check that the State_Reset bit in the C0STR register is set to 1 (reset mode).
Similarly, if the Reset bit is changed from 1 to 0 in order to place the CAN module from CAN reset/
initialization mode into CAN operation mode, always be sure to check that the State_Reset bit is set to 0
(operation mode).
The procedure is described below.
To place CAN Module from CAN Operation Mode into CAN Reset/Initialization Mode
To place CAN Module from CAN Reset/Initialization Mode into CAN Operation Mode
•
•
•
•
Change the Reset bit from 0 to 1.
Check that the State_Reset bit is set to 1.
Change the Reset bit from 1 to 0.
Check that the State_Reset bit is set to 0.
Page 397 of 501
18. CAN Module