About periodic tests

[SimonKorabel]

I want to know about periodic tests of IC. First of all, I'm interested in a period of the test. How to estimate this value. How often should I test the IC with ASIL B (by hardware and software tests w/o external tools, only with chip powers)

 

[D.A.(Tony)Stewart]

Meaning a watch-dog timer value? That depends on how critical the failure is,

State of the Art Software Test Libraries and ASIL B

Learn how Software Test Libraries (STL) offer diagnostic capabilities for ASIL B and SIL 2, helping to ensure safety in automotive and industrial applications.

www.arm.com

 

[SimonKorabel]

Meaning a watch-dog timer value? That depends on how critical the failure is,

State of the Art Software Test Libraries and ASIL B

Learn how Software Test Libraries (STL) offer diagnostic capabilities for ASIL B and SIL 2, helping to ensure safety in automotive and industrial applications.

www.arm.com

I mean I run BISTs (or some else tests) to check the hardware for faults. Is it enough to run tests once a year, twice a month or it's necessary to test chip every ms?

 

[sky_siliconthink]

It depends on the function/safety guarantee level(requirement).
For example: consumer IC may just do BIST before delivery, automotive IC may need do BIST every time its powered up.

 

[SimonKorabel]

Is it enough to run BISTs after reset for ASIL B or maybe do some tests periodically? Is it for hardware or software tests