Renesas RH850 Series Application Note

RH850 Series CAN Transmit Procedure (CAN FD Mode)
R01AN6029EJ0100 Rev.1.0 Page
24
of 42
May 10, 2017
Figure 3-6 Interval Transmission Operation Example (Transmit Mode)
Msg3
Msg2
Msg1
CAN Bus
Msg4
Msg1
Msg2
Msg3
Msg3
Msg4
Msg1
Msg2
Msg3
Msg4
Interval timer
Transmit/receive FIFO buffer
Count starts when transmission
is completed
Not sent immediately for interval
timer counting
Transmit at the interval timer
underflow timing
Counting does not stop even if the
transmit/receive FIFO is empty
Send immediately because
the count is stopped
2. When the transmit/receive FIFO buffer is determined to be the next transmission in the priority determination, the
transmission starts. From the time the transmission request is issued until the transmission starts, the transmission
starts with a delay of 3 clocks or less of the CANm bit time clock.
Transmit data
【Note】1. Since the prescaler is not initialized when the transmission is completed, the first interval time will have
an error of up to 1 count of the interval timer.

Renesas RH850 Series Specifications

General

Core	RH850
Operating Voltage	2.7V to 5.5V
Package Options	LQFP, BGA
Communication Interfaces	CAN, LIN, FlexRay, Ethernet, SPI, I2C, UART
Target Applications	Automotive, Industrial
Timers	Multiple timers
ADC	12-bit, 10-bit
Security Features	Hardware Security Module (HSM)
Safety Features	Memory Protection