Lpc2000

This problem is common to every microcontroller, it is not new; if baud 
rate error is important you have to choose the correct crystaland this 
is not difficult since there are a lot of frequencies available. Of 
course the microcontroller clock will be lower then possible maximum.

acetoel wrote:

>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 
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>
>>>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
>>    
>>
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>Yahoo! Groups Links
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