Controller area network (beCAN) RM0016
362/449 Doc ID 14587 Rev 8
23 Controller area network (beCAN)
23.1 Introduction
The Basic Enhanced CAN peripheral, named beCAN, interfaces the CAN network. It
supports the CAN protocol version 2.0A and B. It has been designed to manage high
number of incoming messages efficiently with a minimum CPU load. It also meets the
priority requirements for transmit messages.
For safety-critical applications the CAN controller provides all hardware functions for
supporting the CAN Time triggered Communication option.
23.2 beCAN main features
● Supports CAN protocol version 2.0 A, B Active
● Bit rates up to 1 Mbit/s
● Supports the Time Triggered Communication option
Transmission
● Three transmit mailboxes
● Configurable transmit priority
● Time Stamp on SOF transmission
Reception
● One receive FIFO with three stages
● Six scalable filter banks
● Identifier list feature
● Configurable FIFO overrun
● Time Stamp on SOF reception
Time triggered communication option
● Disable automatic retransmission mode
● 16-bit free running timer
● Configurable timer resolution
● Time Stamp sent in last two data bytes
Management
● Maskable interrupts
● Software-efficient mailbox mapping at a unique address space
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