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prasanthikethireddy
Associate
November 27, 2025
Solved

CAN support on STM32G4A1KEU6 and STM32G491

Hii Team, I want know does PB5 and PB6 Support CAN interface on the STM32G4A1KEU6 AND STM32G491

Andrew Neil
Andrew NeilBest answer
Super User
November 27, 2025

the STM32G4A1KEU6 datasheet shows that FDCAN is supported on PB5 and PB6:

AndrewNeil_0-1764246096462.png

 

As does the STM32G491 datasheet:

AndrewNeil_1-1764246302644.png

 

You're going to have to give more details for anyone to be able to help with why your project isn't working - see: 

How to write your question to maximize your chances to find a solution

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
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4 replies

Andrew Neil
Andrew Neil
Super User
November 27, 2025

The datasheet will tell you that:

https://www.st.com/en/microcontrollers-microprocessors/stm32g4a1ke.html

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
prasanthikethireddyAuthor
Associate
November 27, 2025

I am using PB6 and PB5 for project as fdcan2 but i am not getting any data  .In the datasheet for PB5 and PB6 they had mentioned FDCAN2

 

Andrew Neil
Andrew NeilBest answer
Super User
November 27, 2025

the STM32G4A1KEU6 datasheet shows that FDCAN is supported on PB5 and PB6:

AndrewNeil_0-1764246096462.png

 

As does the STM32G491 datasheet:

AndrewNeil_1-1764246302644.png

 

You're going to have to give more details for anyone to be able to help with why your project isn't working - see: 

How to write your question to maximize your chances to find a solution

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    mƎALLEm
    mƎALLEm
    ST Technical Moderator
    November 27, 2025

    Hello @prasanthikethireddy and welcome to the ST community,

    You can also use STM32 Sidekick for such kind of question. Please refer to How to use STM32 Sidekick ;)

    To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
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