UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 655

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

Note Check the MUC and DN bits using one read access.
Remark Also check the MBON flag at the beginning and at the end of the interrupt routine, in order to check
the access to the message buffers as well as reception history list registers, in case a pending sleep
mode had been executed. If MBON is detected to be cleared at any check, the actions and results
of the processing have to be discarded and processed again, after MBON is set again.
It is recommended to cancel any sleep mode requests, before processing RX interrupts.
Figure 15-51. Reception via Interrupt (Using C0LIPT Register)
Read C0MDATAxm , C0MDLCm,
C0MIDLm, and C0MIDHm
registers
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 15 CAN CONTROLLER
Read C0LIPT register
Generation of receive
completion interrupt
Clear DN bit
MUC = 0
START
DN = 0
AND
END
Yes
,
Note
,
No
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