DocID5833 Rev 2

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AN1015

Which results can be achieved?

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Which results can be achieved?

ST microcontrollers are designed, tested and optimized to remain fully functional with ESD

voltages (according EN1000-4-2 standard) directly applied on any pin with voltage levels

stated in their datasheets. Although this performance is good enough in most cases, it can

be improved by using software techniques and at the same moment ensure an correct

reaction of the system on EMC level which is sometimes above 4kV.

The properly designed system which is able to detect a corruption caused by EMC

disturbance, initiate and successfully complete the auto recovery procedure resulting in

system reset or reinitialization is always better then the system which does not detect any

problem do not initiate an auto recovery mechanism and stay partially corrupted but without

any visible change.