Yahoo Groups archive

Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: LPC performance and Clock frecuency

2004-09-28 by acetoel

Thanks
I noticed that today when looking at the Baud Rate error. With 20Mhz 
is near 0.12% and with 14.xx is near 0.02%. It's quite a difference 
and 1 Mhz in the processor clock will not make a significant 
difference...
Thanks
Ezequiel

--- In lpc2000@yahoogroups.com, "Leon Heller" <leon_heller@h...> 
wrote:
> ----- Original Message ----- 
> From: "acetoel" <acetoel@y...>
> To: <lpc2000@yahoogroups.com>
> Sent: Tuesday, September 28, 2004 12:03 PM
> Subject: [lpc2000] LPC performance and Clock frecuency
> 
> 
> > Hello...
> > I have seen boards with 10MHz, 14.xxxMhz and 20Mhz. All with the 
PLL 
> > set so the chip runs at 60Mhz more or less...
> > But really, is there any difference if I use a 20Mhz crystal 
> > oscilator than a 10Mhz?
> > IF there is no difference between crytal speed.Why so many 
people 
> > use the 14.xxxMhz crystal osc? 
> 
> It gives accurate baud rates for the UARTs.
> 
> Leon

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.