HD6432646 Hitachi, HD6432646 Datasheet - Page 615

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HD6432646

Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet

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15.3.5
The HCAN is provided with an HCAN sleep mode that places the HCAN module in the sleep
state to reduce current dissipation. Figure 15-11 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
MCR5 = 0
Bus idle?
Figure 15-11 HCAN Sleep Mode Flowchart
Yes
Yes
Yes (manual)
Yes
Yes
No
No
No (automatic)
No
No
Clear sleep mode?
CPU interrupt
MCR5=0
: Settings by user
: Processing by hardware
Yes
No
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