h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 512
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
- Current page: 512 of 766
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Section 14 Controller Area Network (HCAN)
14.8.11 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 µs, the transmit message ID of
being set may be damaged.
Make whichever setting shown below to avoid the message IDs from being damaged.
• Set transmission in one TXPR. After transmission of all transmit messages is completed, set
• Make the transmission setting according to the priority of transmit messages.
• Set the interval to be 50 µs or longer between TXPR and another TXPR or between TXPR and
Table 14.5 Interval Limitation between TXPR and TXPR or between TXPR and TXCR
14.8.12 Note on Releasing the HCAN Reset or HCAN Sleep
Before releasing the HCAN reset or HCAN sleep (MCR0 = 0 or MCR5 = 0), confirm that the
GSR3 bit (the reset status bit) is set to 1.
14.8.13 Note on Accessing Mailbox during the HCAN Sleep
Do not access the mailbox during the HCAN sleep. If accessed, the CPU might halt. Accessing
registers during the HCAN sleep does not cause the CPU halt, nor does accessing the mailbox in
other than the HCAN sleep mode.
Rev. 2.00 Dec. 05, 2005 Page 474 of 724
REJ09B0200-0200
•
•
Baud Rate (bps)
1 M
500 k
250 k
transmission again (mass transmission setting). The interval between transmission settings
should be 50 µs or longer.
TXCR.
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 Interval (µs)
50
50
50
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