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???
04/23/10 09:12
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#175315 - Baud rate errors
Responding to: ???'s previous message
Akhil Bose said:
I also saw at the keil Baudrate calculator that at this frequency i will get an error of -0,18% for 9600.


The Keil baud rate calculator also says:
For best results, choose baud rates that are accurate to +/-1% or better.


-0.18% is, clearly, a good deal better than +/-1% - so you are fine!

Can't use anything of a higher frequency without sacrificing the accuracy ?

As far as the baud rate generator is concerned, it's not how high the frequency is that's at issue - it's whether that particular number can be divided by the available dividers to give a suitably accurate baud rate!

The limit on the maximum frequency is to do with the operation of the silicon itself - it has nothing specifically to do with baud rates.

List of 12 messages in thread
TopicAuthorDate
To Set Baud Rate at 9600            01/01/70 00:00      
   why You worry?            01/01/70 00:00      
   Baud rate errors            01/01/70 00:00      
      Ok..!!            01/01/70 00:00      
         It's not that demanding            01/01/70 00:00      
            it's even less demanding ....            01/01/70 00:00      
      erm...            01/01/70 00:00      
         Sorry??            01/01/70 00:00      
            well            01/01/70 00:00      
   mistype??            01/01/70 00:00      
      Is it Fine ?            01/01/70 00:00      
         in 6 clock mode the max freq is 20MHz            01/01/70 00:00      

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