STM32f407 integrated CAN Transceiver

[Azizz]

Hi everyone!
I have some questions related to the STM32F407 board and CAN protocol 

• Does the STM32F407 have an integrated CAN transceiver?

  • If yes, how can I identify it in schematics and where can i find the schematics?
  • If no, what external peripheral should I use to integrate one?

• Does the STM32F407 support CAN FD?

• I want to use loopback mode to get started with the CAN protocol, but I don’t know where to begin. How should I proceed?

[Andrew Neil]

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@Azizz wrote:

the STM32F407 board

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which board ?

[Azizz]

STM32F407VGT6

[Andrew Neil]

That's just a chip - not a board.

Surely, the datasheet will tell you whether it has a transceiver, and whether it supports FDCAN ?

[TDK]

You can look through the documentation and schematics located on the board page.

https://www.st.com/en/evaluation-tools/stm32f4discovery.html#cad-resources

It doesn't have a CAN transceiver.

The reference manual will list capabilities. It has a bxCAN peripheral, but not FDCAN.

[mƎALLEm · Accepted solution]

Hello,

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@Azizz wrote:

• Does the STM32F407 have an integrated CAN transceiver?

  • If yes, how can I identify it in schematics and where can i find the schematics?
  • If no, what external peripheral should I use to integrate one?

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No there is no CAN transceiver embedded on any of the STM32 products and I think in any other MCU. So you need to add a CAN transceiver. SN65HVD230 could be used as a CAN transceiver in your case. It's already used in many STM32 ST boards.

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@Azizz wrote:

• Does the STM32F407 support CAN FD?

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No. STM32F407 has bxCAN (CAN2.0). If you need FDCAN (CANFD), you need to use STM32H5 or STM32G4 etc ..

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@Azizz wrote:

• I want to use loopback mode to get started with the CAN protocol, but I don’t know where to begin. How should I proceed?

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You can inspire from this example provided in CubeF4.

Hope that answers all your questions.