This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TCAN4550EVM: when tcan4550 work in sleep mode ,how can i wake up it

Part Number: TCAN4550EVM
Other Parts Discussed in Thread: TCAN4550

Dear SIr,

We use tcan4550 work in sleep mode for low power.

But I do not know how to wake up it by can bus?

How to send "WUP" pattern?

Otherwise is tcan4550 can wake up by any can bus message?



  • Hi Xu,

    The wake up pattern (WUP) used to wake TCAN4550 from sleep mode is described in Figure 8-6 of the device's datasheet. Put simply, this pattern is a filtered dominant-recessive-dominant transition on the CAN bus. The requirements for this pattern are intentionally kept quite broad so that the device will wake up on any valid CAN frame. So in a sense, any CAN message can be used as a WUP. 

    Let me know if you have any more questions.

    Eric Schott

  • Dear Eric,

    Thanks for your detailed replies