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Message

Re: Power Supply Sequencing - Latchup - FOLLOWUP

2004-09-10 by tsvetanusunov

--- In lpc2000@yahoogroups.com, "Lasse Madsen" <lasse.madsen@e...> 
wrote:
> Hi all...
> 
> I have some of the Rev B. (not many though) processors not mounted 
yet
> should I throw these to the dogs to avoid problems or...? 

all 2x250 pcs which came to us in February this year were from this 
Rev.B 
after changing the filtering capacitors to 10uF/47uF almost all start 
working reliable at startup, the last two went to Philips for 
evaluation ;)
All next lots we received didn't had this problem (we though that 
this is due to the change with the capacitors we made, but now we 
learn that this is because the bug has been fixed)
of course it's not advisable to put Rev.B in something you want to 
rely on, but you can use them without problem in prototypes/first 
releases of something you develop

Best regards
Tsvetan

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