Lpc2000

--- In lpc2000@yahoogroups.com, "tsvetanusunov" <tusunov@m...> wrote:
> --- In lpc2000@yahoogroups.com, "g2100g" <g2100g@e...> wrote:
> > 1) Other than the report from Tsvetan (messages 1236/1249/1257), 
is 
> > anyone aware of problems related to Power Supply sequencing or 
rise 
> > times?
> > 
> > 2) Is anyone aware of any other problems of the processor going 
> into 
> > a latchup state?
> 
> This may be interesting to group members who have early revisions 
of 
> LPC2106 still unused or in devices working in the field.
> Philips have receive two sample boards which had the latchup 
problem 
> described by me. This is the reply I received yesterday:
> 
> "The boards were experiencing a flash latchup problem associated 
with 
> very early versions/samples of those parts (Rev. B).  The current 
> revision (C) does not have this problem.  Make sure that the reset 
> circuit provides at least a reset duration of a least 10ms at 
power 
> up and 300ns thereafter. 
> 
> Richard"
> 
> 
> Best regards
> Tsvetan

How can you tell which version of the chip you have?  Is it part of 
the printed markings on the chip?  Do other family members (2129) 
have this problem too?
Thanks,
James