Alan B. Pearce <A.B.Pearce <at> rl.ac.uk> writes:
 
> Got this in the inbox this morning, from Freescale.
> 
> "Freescale is now shipping its popular S12 16-bit automotive
> microcontrollers (MCUs) at a rate of more than 100 million
> units a year with an exceptionally low defect rate of less
> than one part per million. "
> 
> Now my low quality mental maths (high reject rate of results) says they have 
> less than 100 delivered processors rejected in a year. That is impressive 

But the fun is to guess which one of those is bad. Because by bad they do not
mean a missing pin or something that can be found on first test ... and these go
into cars. Ahem. ABS brakes in dragster mode ? Activate immobilizer every 13th
day ? WHat are the testing requirements for automotive silicon ? Military
devices undergo a lot of testing but they have a budget. What's the budget on
car stuff (zero) and how many are there (literally millions). So what do the
manufacturers do, fingers crossed and pay insurance ?

Peter P.



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