h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 618

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
15.3.6
The HCAN halt mode is provided to enable mailbox settings to be changed without performing an
HCAN hardware or software reset. Figure 15.12 shows a flowchart of the HCAN halt mode.
HCAN halt mode is entered by setting the halt request bit (MCR1) to 1 in the master control
register (MCR). If the CAN bus is operating, the transition to HCAN halt mode is delayed until
the bus becomes idle.
HCAN halt mode is cleared by clearing MCR1 to 0.
Rev. 5.00 Sep 22, 2005 page 592 of 1136
REJ09B0257-0500
HCAN Halt Mode
CAN bus communication possible
MBCR setting
MCR1 = 1
MCR1 = 0
Bus idle?
Figure 15.12 HCAN Halt Mode Flowchart
Yes
No
: Settings by user
: Processing by hardware