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GPIO read frequency

Question asked by charles huang on Jun 10, 2019
Latest reply on Jun 10, 2019 by igorpadykov

Hi All,

 

We would like to read the GPIO triggerred by interrupt. So, we want to confirm which is the maximum frequency to read the GPIO?

 

We also find two articles in the community, but the information is so different.

https://community.nxp.com/thread/454951

=> It mentions 300 ns = 3333kHz.

https://community.nxp.com/message/974747

=> The picture shows it's around 4.6kHz

 

Best regards,

Daniel

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