HD6417750RF240V Datasheet, PDF (460/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 15 Controller Area Network (HCAN)
Unread message overwrite
UMSR = 1
IRR9 = 1
: Settings by user
: Processing by hardware
IMR9 = 1?
Yes
No
Interrupt to CPU
Clear IRR9
Message control/message data read
End
Figure 15.12 Unread Message Overwrite Flowchart
15.4.5 HCAN Sleep Mode
The HCAN is provided with an HCAN sleep mode that places the HCAN module in the sleep
state in order to reduce current dissipation. Figure 15.13 shows a flowchart of the HCAN sleep
mode.
Rev. 7.00 Sep. 11, 2009 Page 424 of 566
REJ09B0211-0700