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Lpc2000

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Message

Re: power sequencing?

2004-06-19 by lpc2100_fan

Hi Shannon,

the previous posting was message 1236 and following. Back then there
was a conclusion that sequencing matters, Philips says, sequencing
does not matter, in our tests sequencing did not matter and we did
numerous of them. So, your proposal will work but it is important that
reset stays active until both voltages are up as you mentioned. 

Cheers, Bob

--- In lpc2000@yahoogroups.com, Shannon Holland <holland@l...> wrote:
> Ugh,
> 
> I seem to remember an email or two about this a while ago, but can't 
> seem to find them - are there any requirements for the ordering of the 
> core and IO voltage supplies? Don't see anything in the datasheets...
> 
> Realized I was about to implement a design where IO would come up 
> before core (the part would still be in reset for 300ms after VCC_IO 
> stabilized) - will that be ok?
> 
> Thanks!
> 
> Shannon

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