h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 721

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

16.3.5
The HCAN is provided with an HCAN sleep mode that places the HCAN module in the sleep
state to reduce current dissipation. Figure 16-11 shows a flowchart of the HCAN sleep mode.
HCAN Sleep Mode
CAN bus communication possible
Sleep mode clearing method
Initialize TEC and REC
11 recessive bits?
Bus operation?
MCR7 = 0?
IMR12 = 1?
MCR5 = 1
IRR12 = 1
GSR3 = 1?
MCR5 = 0
Bus idle?
Yes
Yes
Yes (manual)
Yes
Yes
Yes
Figure 16-11 HCAN Sleep Mode Flowchart
No
No
No (automatic)
No
No
No
Clear sleep mode?
CPU interrupt
GSR3 = 1?
MCR5 = 0
Section 16 Controller Area Network (HCAN)
: Settings by user
: Processing by hardware
Rev. 6.00 Feb 22, 2005 page 661 of 1484
Yes
Yes
No
No
REJ09B0103-0600
MB should
not be
accessed