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Safety Mechanism Empty Area in FMEDA

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Safety Mechanism Empty Area in FMEDA

‎06-05-2024 05:37 PM
168 Views
HeebeomPark
Contributor II

The following is a part of Flash Safety Mechanism.

Why the safety mechanism is empty?  The following can cover for latent?

 • SM1.EDC_after_ECC
 • SM2.FLASH.SCHECK
 • SM1.FLASH.AI_SELFCHECK

HeebeomPark_0-1717633898112.png

i think the following SM for FCCU that is latent. Why the safety mechanism is empty?

HeebeomPark_1-1717633912955.png

The following can be covered by "SM2.STCU.SWCHECK"? 

HeebeomPark_2-1717633929081.png

what about the following? Can you give us any recommendation? Even safety manual does not mention it. 

HeebeomPark_0-1717974196485.png

 

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Friday
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antoinedubois
NXP Employee
NXP Employee

Hi Heebeom,

Failure of the FOSU, MBIST, STCU are consider safe fault as there are features to test the safety mechanisms. Therefore there would be consider "triple point fault that are safe for the application".

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