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Message

Re: External clock on LPC2131

2005-11-11 by unity0724

Hi, Dave B.
Is your external 12.28Mhz clock source working fine with the Lpc2xxx
internal clock multiplier?  Did you turn on Clock PLL on the LPC2131?
Thanks in Advance.

--- In lpc2000@yahoogroups.com, "drb5599" <dbutler@c...> wrote:
>
> Hi Marcio,
> Yes, that mode of operation is supported.  I have been running a 
> LPC2131 with an external 12.288MHz clock that is buffered and 
feeds 
> everything on my board.  Works fine.
> 
> See page 31/32 of the manual.  There is some info there although I 
> agree it is not very clear.  Just leave the unused pin 61 (XTAL2) 
> open.  Also, make sure you use the recommended (100pF) coupling 
cap 
> for XTAL1.
> See figure 7a for slave mode.
> 
> Good Luck,
> Dave B.
> 
> 
> 
> 
> 
> --- In lpc2000@yahoogroups.com, "atmelbr" <atmelbr@y...> wrote:
> >
> > Hi all,
> >    If I put an external clock on XTAL1 input (instead of quartz
> > crystal) everything will run ok ? I can“t find the answer on 
> datasheet.
> > Thanks,
> >           Marcio
> >
>

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