PCA9539: Reset Connection

KHR

Part Number: PCA9539

Hi, I have a question for Connection of Reset Pin.

Does Reset Pin(Pin No.: 3) of PCA9539 need to be connected to the Reset Pin of Master Controller? or connect to the GND?

It is not clear on the datasheet.

I will be waiting for the reply.

Thank you.

over 3 years ago

+1 Clemens Ladisch over 3 years ago

Guru 287370 points

If your controller wants to be able to reset this device, then it needs a connection to the /RESET pin.
If you do not need the reset function, then the /RESET pin should be connected to V_CC through a pullup resistor.

+1 Eric Schott1 over 3 years ago in reply to Clemens Ladisch

TI__Guru 51045 points

Thanks for the help Clemens!

Hi Kim,

Let us know if you have any more questions.

Regards,
Eric Schott

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PCA9539: Reset Connection