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TCAN4551-Q1: Regarding VIO on each state

Kei Kuwahara
Expert 7660 points
Part Number: TCAN4551-Q1

Hello Team,

My customer has question regarding VIO of this device.

What will happen if VIO is off during normal or standby mode? There is no explanation of VIO on datasheet Fig 22. device state diagram.

I believe it is okay for VIO to be off going to sleep mode because the INH is also off after MO=00.

Best Regards,

Kei Kuwahara

  • 0
    TI__Guru 74282 points

    Kei,

    It is okay for VIO to be off during these states, but VIO must be present for any kind of CAN communication in Normal mode. In fact, in typical systems the expectation is for VIO to not be present during sleep mode, because as you said, INH is low and typically INH is the enable for the regulator supplying VIO.

    Please let us know if you have any other questions.

    Regards,

    Eric Hackett