TCA9554A: How to configure port type on not use pins?

Statham Su

Genius 5000 points

Part Number: TCA9554A

Hello Sir:

We have two pins will not use on our application.

We want to know how to configure port type on not use pins?

Please let us know your feedback.

Thanks a lot.

0 Clemens Ladisch over 1 year ago

Guru 256970 points

The internal pull-up resistors prevent any unused inputs from floating; you do not need to change their configuration.

0 Eric Hackett over 1 year ago in reply to Clemens Ladisch

Thanks for the help Clemens!

Statham,

Please let us know if you have any other questions.

Regards,

Eric Hackett

Interface forum