R5F21238JFP#U0 Renesas Electronics America, R5F21238JFP#U0 Datasheet - Page 407

• Manufacturer Part Number: R5F21238JFP#U0
• Description: IC R8C/23 MCU FLASH 64K 48LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238JFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 64KB (64K x 8)
• 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
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
18.5.5
When repeating communication error, the CAN module enters a bus-off state according to the fault
confinement rule of CAN specification and cannot perform CAN communication. The CAN module can return
to CAN operation mode from a bus-off state in the following conditions. At this time, the value of all CAN-
associated registers except the C0STR, C0RECR and C0TECR registers are not changed.
(1) When 11 consecutive recessive bits are monitored 128 times
(2) When the RetBus Off bit in the C0CTLR register = 1 (forcible return form bus off)
Bus-Off State
The module enters instantly in an error-active state and performs CAN communication.
The module enters instantly in an error-active state and performs CAN communication again after 11
consecutive recessive bits are detected.
Page 385 of 501
18. CAN Module