I am interested in using two buses in my design: one I2C and the other Usart. I know that the SPI can't be used in parallel with the I2C- Its obvious as it uses the same pins... but what about Usart? The pics in question are the 16f876a.
Re: Can Usart mode be used with the I2C mode in the 16F PICs
You can share the two pins between two protocols (I2C,SPI). You should use a kind of
Analog Multiplex (take care, I2C Receiver sends Acknowledge in DATA line).
**broken link removed**
Analog Multiplex by principle is bidirectional (Switchs).