Handling power failure - MPC5200

Jón Benediktsson jonb at marel.is
Sat Nov 6 01:13:51 EST 2004


> In message <OF368071C2.FBC6B7BC-ON00256F42.003F3DF3-00256F42.
> 0044E8BB at marel.is> you wrote:
> > 
> > Capacitors on the supply provide me with some milliseconds to repond 
to 
> > power failure, which I would
> > like to use to do as much cleanup as possible before power is totally 
> > gone.  In particular, I am concerned
> 
> How many is "some"? If it's not >100 or so it is probably  not  worht
> the effort...

With the current design "some" is <50, but we can change the design if
we find it necessary.
 
> 
> Use the standard methods: use the CF card read-only  (many  CF  cards
> can  be  damaged  [beyond  repair]  when  you power off while a write
> operation is in progress).

Is this an acknowledged fact by CF manufacturers or based on experiece ?

Thank you very much for your input.

Regards,
Jón Benediktsson
Marel hf.




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