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Re: UART clock tolerance question.

2005-12-15 by Guillermo Prandi

Most likely it will. It is not exactly "if LPC will handle it", but 
more like whether the two parties will understand each other. In a 
perfect world, you just need to multiply a bit's time times the number 
of bits in your word (7, 8?) plus the start and the stop bits and see 
if the stop bit ends reasonably in range (bits are compared at their 
mid-point). Since the world is not so perfect, you must take into 
account the rise and fall ramps of your transmission line as well. If 
both devices are 3.3V or 5V and in the same board, you can reasonably 
ignore the rise and fall ramps, since they are so sharp.

Guille

--- In lpc2000@yahoogroups.com, "diwilru" <ddiky@a...> wrote:
>
> Fellows,
> 
> In my application the best I can get is 115384 Baud for uart0 whereas 
data source has 
> speed of 115200 exactly. The error is about 0.16%. The question is - 
will lpc (2148) 
> handle it?
> 
> Thanks in advance, 
> Dmitry.
>

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