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AURIX™ Forum Discussions

User17612
Level 3
Level 3
First like received
‎Aug 06, 2019 05:14 AM
‎Aug 06, 2019 05:14 AM

Additional Information for Reset Spike Filter requested?

Hi,
Could you please check below question?

As I understand, "Spike filter always blocked pulse duration" means ignore time right? and "Spike filter pass-through pulse duration" means valid signal after that time right?
so How MCU recognize between "Spike filter always blocked pulse duration" and "Spike filter pass-through pulse duration"?

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User17615
Level 2
Level 2
First like received
‎Aug 06, 2019 09:05 AM
‎Aug 06, 2019 09:05 AM

Re: Additional Information for Reset Spike Filter requested?

Hi,

Spikes with less than 80ns duration will be always blocked.
Spikes that are longer than 220 will be propagated trough, always cause device reset.
If there is spurious spike somewhere in between 80..220ns, the filtration is not guarantied.
If larger spikes are expected in your system, you can enable additional analog spike filter of 500ns or use an external analog filter on PORST line.
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