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TCAN4550-Q1: Unused pin.

Kengo.Y
Guru 11435 points

Part Number: TCAN4550-Q1

Hi team,

Could you tell me about the processing of unused pin for "nWKRQ" and "GPIO1"?
Is it OK to float?

If I need to set the register, please let me know.
I think nWKRQ_VOLTAGEW needs to be set to "0”(Internal voltage rail).

Sincerely.
Kengo.

  • +1
    TI__Guru 53535 points

    Hi Kengo,

    Both of these outputs can be left floating if unused. No special register setting needs to be set (nWKRQ_VOLTAGEW only controls the internal reference voltage for the pin, this is irrelevant if the pin is disconnected). 

    I do recommend including a test point or similar access for GPIO1 to support test mode. Excluding this would not impact normal device function.

    Let me know if you have any more questions. 

    Regards,
    Eric Schott