h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 461

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

15.8.11 HCAN Transmit Procedure
When transmission is set while the bus is in the idle state, if the next transmission is set or the set
transmission is canceled under the following conditions within 50 s, the transmit message ID of
being set may be damaged.
Make whichever setting shown below to avoid the message IDs from being damaged.
Table 15.5 Interval Limitation between TXPR and TXPR or between TXPR and TXCR
15.8.12 Canceling HCAN Reset and HCAN Sleep Mode
Before canceling the software reset for HCAN or HCAN sleep mode (MCR0 = 0 or MCR5 = 0),
confirm that the reset status bit (GSR3) is set to 1.
15.8.13 Accessing Mailbox in HCAN Sleep Mode
The mailboxes should not be accessed in HCAN sleep mode. If mailboxes are accessed in HCAN
sleep mode, the CPU may stop. When registers are accessed in HCAN sleep mode, the CPU does
not stop. When mailboxes are accessed in modes other than HCAN sleep mode, the CPU does not
stop.
Baud Rate (bps)
1 M
500 k
250 k
When the second transmission has the message whose priority is higher than the first one.
When the massage of the highest priority is canceled in the first transmission.
Set transmission in one TXPR. After transmission of all transmit messages is completed, set
transmission again (mass transmission setting). The interval between transmission settings
should be 50 s or longer.
Make the transmission setting according to the priority of transmit messages.
Set the interval to be 50 s or longer between TXPR and another TXPR or between TXPR and
TXCR.
Set Interval ( s)
50
50
50
Section 15 Controller Area Network (HCAN)
Rev. 3.00 Oct 04, 2005 page 421 of 598
REJ09B0155-0300