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15.3.5
HCAN Sleep Mode
The HCAN is provided with an HCAN sleep mode that places the HCAN module in the sleep
state to reduce current dissipation. Figure 15-11 shows a flowchart of the HCAN sleep mode.
Initialize TEC and REC
Sleep mode clearing method
11 recessive bits?
CAN bus communication possible
MCR5 = 1
Bus idle?
Yes
Bus operation?
Yes
IRR12 = 1
IMR12 = 1?
Yes
MCR7 = 0?
Yes (manual)
MCR5 = 0
Yes
Figure 15-11 HCAN Sleep Mode Flowchart
No
No
No
CPU interrupt
No (automatic)
Clear sleep mode?
MCR5=0
No
: Settings by user
: Processing by hardware
No
Yes
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