Suggest Input Switch Detection in Ultra Low Power and efficient.

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

ketiljo — Tue, 05 Apr 2022 10:49:14 GMT

Why do you think that? Try to find an appnote from a manufacturer of such devices and look for tips.

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

bivay — Tue, 05 Apr 2022 05:36:19 GMT

TVS diode may consume few uA of current I think, Could you please give sight on this ?

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

ketiljo — Mon, 04 Apr 2022 13:15:51 GMT

The normal way to protect pins against ESD is to use TVS diodes on pins that can be accessed from outside the housing, power supply etc.

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

bivay — Mon, 04 Apr 2022 08:23:29 GMT

please could you suggest any schematic for ESD protection with component values?

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

ketiljo — Thu, 31 Mar 2022 13:02:31 GMT

Noise will not the able to pull down the line. There's a 13k ohm pull up resistor in the GPIO. But you should obviously take the usual care to protect the device against ESD etc.

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

bivay — Wed, 30 Mar 2022 14:41:16 GMT

Our device will be used in Noisy Industrial Area, as per your suggestion, if we remove everything, expect switch and use internal pullup, then what are the chances of getting fake switch detections.

We add extra component for noise reduction purposes? Could you suggest on this?

RE: Suggest Input Switch Detection in Ultra Low Power and efficient.

ketiljo — Wed, 30 Mar 2022 13:09:24 GMT

Better to remove everything but the switch and use the internal pullup resistor. As you have it now, the switch can't pull the line lower than 0.3 V and the capacitor discharge curve will cause the input to be in an undefined state for some time.