TCA6424A interrupt function

Kai Hsiao

Guru 12675 points

Other Parts Discussed in Thread: TCA6424A, TCA9535, TCA9539

Dear Sir

When I program TCA6424A's GPIO to GPI

if GPI level change (ex . From high to Low) ,may I use Interrput to indicate??

I would like to do if any GPI level change ,the interrput will alert CPU

Could TCA6424A do it ?? if not ,does TI have any IO expander can do ??

Thanks

0 Rajan Arora over 9 years ago

Hi Kai,

Yes, you can use the TCA6424A when IO's set in input mode to indicate GPI level change using the interrupt pin.

All of TI IO expanders support this feature (e.g. TCA9539, TCA9535 etc).

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