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High Temperature CAN

Brian Weber
Prodigy 20 points

I am interested in implementing a CAN bus on an MSP430F2619-HT in a harsh environment, with 200C temperatures. I have found numerous CAN transceivers such as SN65HVD233-HT and SN65HVD1040-HT that fit the bill, but am having no luck finding a suitable CAN controller.

I know there are a few temperature rated MCUs/DSPs that have built in CAN, but they are nearly 10x as power hungry as the 430 I'm currently using, so I'd rather just add the CAN functionality through an SPI interface or similar instead of changing processors. I would probably be looking for something similar to the MCP2515. Is there such an animal?

  • 0
    TI__Guru 70086 points

    Hi Brian,

    Seeing this earlier post: I'm not sure that TI has a SPI to CAN interface, but since that is a 5-year-old post, to be certain it might be best to ask in the TI Interface forum here to see if there are any TI offerings for SPI to CAN interface chips:

    Other than this, I know there are other SPI to CAN interfaces on the market, you would just need to find one that will work with the logic levels of the MSP430 and is rated for the conditions you mentioned.

    Best of luck,

    Katie

  • 0
    Guru 12956 points
    I think this will be a tricky one. Any chance you can leave the high-temp part as non-CAN and communicate with a <125C communication gateway using UART or I2C or similar?

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