TPS25751: 3.3V on GPIO3 pin with no function assignment

Hideki Hayashi1

Part Number: TPS25751

Tool/software:

Hi team

Is there a concern when high signal (3.3V) is applied when GPIO3 is not used (no function assignment in the patch)?

This is only happen in prototype board. In the mass production, GPIO3 will be shorted to GND as recommended. But this should be known to divide the cause of other issue.

Regards,

Hayashi

over 1 year ago

+1 Christopher Lim1 over 1 year ago

TI__Mastermind 37855 points

Hi Hayashi,

In the App Config, make sure GPIO3 is disabled and you should be fine.

Thanks and Regards,

Chris

0 Hideki Hayashi1 over 1 year ago in reply to Christopher Lim1

TI__Expert 8400 points

Hi Chris,

There are two setting "reserved" and "disable" mixed as below due to using different GUI ver or different base config.

When customer want a pin being disabled, which is better?

Best regards,

Hayashi

0 Christopher Lim1 over 1 year ago in reply to Hideki Hayashi1

TI__Mastermind 37855 points

Hi Hayashi,

Use Disabled, it is the safer option.

Thanks and Regards,

Chris

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TPS25751: 3.3V on GPIO3 pin with no function assignment