STM8S datasheet(378/467 Pages) STMICROELECTRONICS

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Controller area network (beCAN)

RM0016

378/467

DocID14587 Rev 14

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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