micro with two UART ports?!!

[thalia]

Hi there,

i'm basically looking for a micro(preferably from Atmel), that has two UARTs on board. So far i've found the AT91M42800A. Is this one ok?

I'm going to be programming the micro to read the output from my voice recognition module as you suggested earlier..But i need two uarts: one to receive serial data from the parallel to serial converter and another to transmit /receive, to/from the output..

 

[Nigel Goodwin]

It's trival to write a software UART, so you could use one hardware UART, and do the second one in software.

 

[plot]

look into the ATMega lines...

You could do as nigel suggested and create a software based Uart, i'm working on a project that currently needs two UART's too, and this is what i'm going to be doing.

I might try using a multiplexor to switch the UART between two devices, but i'm not sure how well this will work.

 

[nayani p]

Hello,

Did you consider Atmega64 or 128 depending upon your code requirements? these controllers have two serial ports and ample number of i/o ports.

Nayani

 

[AZdave]

The 16F877A has an addressable USART to communicate with multiple devices. See paragraph 10.2.3 of Microchip's 16F87XA Data Sheet