Micro with 5-6 independent UARTs?

On Mon, 04 Jun 2007 05:54:34 -0700, ElderUberGeek <aribloch@gmail.com>
wrote:

>
>Anyone know of a micro that has 5-6 UARTS that can each run a
>different baud rate? (meaning not the same clock). 

At least the Motorola MC68360 has four SCC ports and two SMC ports, in
in which four different clock generators can be used. 

In the Freescale MPC82xx series something more appropriate might be
found.

Paul

In article <v20963p087fc8c5aip7vp9dmkcj96cj624@4ax.com>, keinanen@sci.fi 
says...
> On Mon, 04 Jun 2007 05:54:34 -0700, ElderUberGeek <aribloch@gmail.com>
> wrote:
> 
> >
> >Anyone know of a micro that has 5-6 UARTS that can each run a
> >different baud rate? (meaning not the same clock). 
> 
> At least the Motorola MC68360 has four SCC ports and two SMC ports, in
> in which four different clock generators can be used. 
> 
> In the Freescale MPC82xx series something more appropriate might be
> found.
> 
> Paul
> 

Just about any Freescale MPU with a TPU should be able to handle
5 or 6 channels at modest baud rates  if there are not a lot of
simultaneous continuous inputs.  When programmed as a UART input
or output,  the TPU generates an interrupt for each byte transferred.  
That makes efficient queue handling a priority item.

I did an oceanographic data logger in this fashion more than
15 years ago with a  16-Mhz  68332.

Mark Borgerson

ElderUberGeek wrote:
> Anyone know of a micro that has 5-6 UARTS that can each run a
> different baud rate? (meaning not the same clock). Oh, and a TCP stack
> would be nice also....

Yes, there are some micros out there that have umpteen uarts but they 
usually come with a lot of other baggage (useful if you need it, but 
baggage otherwise). The Parallax Propeller has no uarts at all and yet 
will be quite happy to run 8 high-speed full-duplex uarts or more as the 
chip is basically  comprised of eight 32-bit 20MIP CPUs in the one QFP44 
pack. Just add a 5MHz rock and a I2C EEPROM for your code and you are set.

Standard software objects cover a wide range of applications including 
serial coms, I2C, SPI, SD cards etc. I've worked with a great many micro 
families and you just can't go past this one. Seeing is believing.

*Peter*