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GPIO protection

Question asked by Tejpal Singh on Aug 18, 2016
Latest reply on Aug 25, 2016 by Hui_Ma

According to datasheet K10P144M100SF2V2 GPIO only have clamp diode to VSS. I need EOS protection up to +24V.

 

I can experiment and find what works but I will like to understand GPIO characteristics.

 

Can I use a series 10K resistor for protection?

Will it cause latchup because 24V > Max 5~5.5V even though it can't drive latch up current of 100ma?

What will be the voltage at pin?

What is the reverse break down voltage of clamp diode?

Will I I definitely need another clamp diode to VDD as well ? Why?

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