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>
> Use xtal osc.
> One byte is typically 10bits and that means a max drift of +/-5% if
the last bit is to be detected correctly
> (assuming sampeling in the middle of the bit).
> The practical requirement is more like -/+1% for reliable operation.
Only a xtal or maybe resonator
> can achieve that type of accuracy.
>
> kg4pid wrote:
Hi Eirik,
It's actually more like 2.5% and if you look carefully at what you
have written (turn it around) you can get reliable operation if you
decrease the number of bits sent per byte. Remember that this type of
serial comms sends and receives bytes least significant bit first. You
could use a modified character set of 6 or even 5 bits such as one
shown here:
http://homepages.
Regards
Sergio Masci
http://www.xcprod.
.
Earn your degree in as few as 2 years - Advance your career with an AS, BS, MS degree - College-Finder.net.
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