Why is called CAN as FlexCAN? what is the difference?
'Flexcan' is only the name of the IP module. We have in Freescale several CAN controllers in different MCU families, MSCAN, FLEXCAN,....Every CAN controller have different features in terms of buffers, FIFO's, mailboxes, etc.. The important thing is that module is compliant with CAN standards. From RM:
"The FlexCAN module is a communication controller implementing the CAN protocol according to the CAN 2.0B protocol specification"
If the module have additional features, you can manage the CAN bus with more flexibility and capabilities or less CPU load.
Thank you very much
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