Can LBIST fail based on Temperature assuming Voltage levels are all within Spec?

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cross mob
Level 4
Level 4
50 replies posted 50 questions asked 25 replies posted
Hello Support,

In the Aurix 2G Safety Manual, there is a section "ESM[SW]:MCU:LBIST_RESULT" where the following is mentioned:

"Therefore it might happen that under extreme operation conditions a
single LBIST run might fail by showing an unexpected MISR-result."

For SAK-TC3xx device, when the ambient is 125C and Voltage rails are within Spec, is there a possibility LBIST MISR value will be wrong?
Please help me better understand this statement.
Best Regards
1 Reply
Level 6
Level 6
10 likes received 10 solutions authored 5 solutions authored
There is always the possibility of a soft error during the LBIST. Run it a second time if it fails.