AGENDA
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What is CAN protocol
Why CAN protocol
Where is CAN protocol used
Compare CAN protocol to similar protocols
Shyam Bhat
VicharaVandana
What is CAN?
Controller
Area
Network
Nodes
Network
ECUs
Speed
Length
Data
Why CAN?
Automotive Domain needed a way for all ECUs to communicate the data
among themselves.
Communication could be started by any node –Asynchronous|Multimaster
Highly immune to electrical noise – Dual twisted pair
Short latency period – Small frame size (8bytes data)
Many more reasons
Comparing CAN with other protocols
CAN
Bus
Dual twisted pair
Speed
1MBPS
Data
8 bytes
Type
Asynchronous
Fault tolerance High
Flexray
Dual twisted pair
10MBPS
264 bytes
Synchronous
Medium
Ethernet
Wire or optical fibre
100MBPS and above
1500Bytes
point to point
Low
Most
optical fibre
28.4MBPS
NA
point to point
Low