> I've been working with a PIC16F877 today primarily with the usart(sci)
port
> and have come up against what appears to be a local echo within the IC.
> Whatever I transmit immediately appears at the rx pin ( I have even lifted
> the RX leg to make sure that there is not a short causing this).
> Is this to be expected with this device - I certainly could not see
anything
> in the specs.

The USART in normal asynchronous mode definitely does not do this.  I've
used it many times, and such an echo would have messed quite a few projects.
However, I don't understand exactly what you mean by "usart(sci)".


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@embedinc.com, http://www.embedinc.com

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