You seem not to understand what my point is . MTBF , FIT's are also there in the specs. That you guys dont want to listen . Mean Time Between Failures has nothing to do with design , we produce 1000 units (sensor control system) from our SMT line and when testing the product most of the time from one lot we are bound to have 4-5 failures , wheres the other MCUs of the same lot work properly ? . Though not a big deal what I want to say is there are certain discrepancies that we dont know and cannot gaurantee anything .
This shows the purpose of providing Gaurantee to products or do you just ridiculously design and throw away it in the market? .


" Running code does not cause any wear on the chip;
Checking a port bit does not cause any wear on the chip. "

as stated earlier by Neil , It does cause wear . That sows the purpose of wear-leveling algorithm , which people use for their hardcore product design , though not with the port pins but with the memory .


AP

PS:
1) I dont understand how you are on a statement which you call that you are an on rocker, clearly say what you mean , I cant get you.

2) i am not in the favour of running things to its maximum limits ? , where did I say this that I design this way , dont IMPOSE this on me .