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TCAN1145-Q1: Wake pin and schematic

Lawrence He
Genius 3115 points
Part Number: TCAN1145-Q1

Tool/software:

Hi, Support Team

we will use TCAN1145-Q1 as below chart, have any concern?

and wake pin connect to MCU(3.3v), could workable?

if any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence

  • 0
    TI__Guru 74262 points

    Lawrence,

    The schematic looks correct to me, though one point of feedback would be increasing the width of the VCC trace if possible.

    For the WAKE pin, the MCU would need to be able to drive at least 4V for it to recognize a high logic level. Since your MCU is 3.3V, this won't work. Is there a way you can control a switch that is pulled up to your 5V voltage rail in your system and then use that to control the WAKE input?

    Regards,

    Eric Hackett