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how to prevent AVR issues caused by static?

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electric1

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I built a battery operated device using Atmega328 , which collects data from simple sensors and stores some data in EEPROM. When operated in a dry environment sometimes a static discharge from a person accidentally touching the sensor circuit would cause AVR to hang or reset and EEPROM data get corrupted.
I have bypass capacitors on VCC and GND pins close to AVR, as a standard practice, but what else can be done to prevent AVR corruption from static?
I searched online and read design papers from Atmel, but can't find anything specific to deal with static discharges.
Any ideas?
 

IC's usually have some static protection but usually not enough for all events. Static events are dealt with by using devices such as clamping diodes. Read up on TVS diodes. Their purpose is to conduct static discharges to ground or power rails when they happen.

Look up "ESD protection" to get you started.
 

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