[SOLVED] [moved] Can USART protocol can be used to connect UART protocol devices

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Im bit confused about the UART and USART communication.

Can I try a device which is having USART protocol to make to work with UART protocol by not connecting the clock and DIR pin. As simple UART required RX and TX so I will used only those 2 pins for the interfacing of UART from USART will that be fine.

Thanks in advance...
 

You need three pins - ground must be connected too!

UART = Universal Asynchronous Receiver Transmitter
USART = Universal Synchronous Asynchronous Receiver Transmitter

The data exchange between them is identical in asynchronous mode, their difference is an additional mode (synchronous) in the USART which allows them to share the same clock signal and therefore remain 'locked' (=synchronous) to each other. In async mode, the data stream has to be searched for start and stop bits to establish a time reference for extracting the data bytes from the bit stream. If you use a USART in asynchronous mode it works exactly the same as a UART.

Brian.
 

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