alan smith wrote :

> I take it that the internal oscillators that Mchip has
> internal are just as good as putting an external
> crystal and associated parts.

It might be "just as good" in some ways, but it might also
be "not as good" in other ways and sometimes even
"better then" (such as "less components") in yet other ways.

Depending on what's important for you, you should look
up and evaluate whatever electrical specification in the
data sheet that might apply to your specific project.

When it comes to freq stability/precision it's probably OK
at 25 deg C and otherwise "normal" conditions to run the
USART. But probably not over the full temp range of the device.

And also, it (INTOSC) might be "just as good" to normal hobbyists
standards, bot not if building a larger series of (professional) products.

Regards,
Jan-Erik.



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