ATMEGA with 2 UARTS

Started by Cleber Dantas October 7, 2009
Hello! Greetings from Brazil!

Can you recommend an ATMEGA with 2 UARTS? The reason that we will use UART
is simple, its more reliable than software serial. I don't know if
everybody agree with that.

Thanks!

Cleber



On Wed, Oct 07, 2009 at 09:52:29AM -0300, Cleber Dantas wrote:
>
> Can you recommend an ATMEGA with 2 UARTS?

Yes, I can recommend.

I recommend any AVR with 2 UARTS found in this table:
http://www.atmel.com/dyn/resources/prod_documents/doc4004.pdf

As for the other properties, you have to decide for yourself.

--
David Kelly N4HHE, d...@HiWAAY.net
=======================================================================Whom computers would destroy, they must first drive mad.
--- In a..., "Cleber Dantas" wrote:
>
> Hello! Greetings from Brazil!
>
>
>
> Can you recommend an ATMEGA with 2 UARTS?

Goto www.digikey.com

Enter ATMEGA into the search window (press enter)

Select the link Microcontrollers (648 items)

Select in the Connectivity column any UART/USART and press Apply Filter

There are hundreds to chose from.

good luck

don



Cleber

I´m using a ATMega164P and this device are functioning very well!

Regard,

Edson
On Wed 07/10/09 09:52 , "Cleber Dantas" c...@dxs.com.br sent:
Hello! Greetings from Brazil!
Can you recommend an ATMEGA with 2 UARTS? The reason that we will
use UART
is simple, its more reliable than software serial. I don't know if
everybody agree with that.
Thanks!
Cleber



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At the moment i have got two AVR microcontrollers,with 2 UARTs,on my
mind,i.e. ATmega644P and ATmega162.I have used both of them in my
projects and has good experience with them.ATmega644P has bigger
memory capacity( both SRAM,flash memory and EEPROM) as compared with
ATmega162.Also ATmega162 lacks built-in ADCs as compared with
ATmega644P.Both have two UARTs.
I strongly agree with you,hardware UART is much more reliable than
software UART (softwared based serial port) mainly due to timing
issues.

regards
m.yasir

On 07/10/2009, Cleber Dantas wrote:
> Hello! Greetings from Brazil!
>
> Can you recommend an ATMEGA with 2 UARTS? The reason that we will use UART
> is simple, its more reliable than software serial. I don't know if
> everybody agree with that.
>
> Thanks!
>
> Cleber
>
>
--
regards
m.yasir
On Wed, Oct 07, 2009 at 08:45:59PM +0500, Muhammad Yasir wrote:

[...]

> I strongly agree with you,hardware UART is much more reliable than
> software UART (softwared based serial port) mainly due to timing
> issues.

I would *not* strongly agree. It depends totally on the skills of the
designer and implementer of the software UART.

Hardware UARTs are usually easier to use.

If one doesn't know any better than to top-post w/o trim to a
technically savvy email list then one probably should not attempt to use
a software UART.

--
David Kelly N4HHE, d...@HiWAAY.net
=======================================================================Whom computers would destroy, they must first drive mad.
Ola Cleber

Senao se incomoda , responderei em PT

Use o ATmega162 , comprei recentemente na CN Tecnologia ...

Sds

Emerson

2009/10/7 David Kelly

> On Wed, Oct 07, 2009 at 09:52:29AM -0300, Cleber Dantas wrote:
> >
> > Can you recommend an ATMEGA with 2 UARTS?
>
> Yes, I can recommend.
>
> I recommend any AVR with 2 UARTS found in this table:
> http://www.atmel.com/dyn/resources/prod_documents/doc4004.pdf
>
> As for the other properties, you have to decide for yourself.
>
> --
> David Kelly N4HHE, d...@HiWAAY.net
> =======================================================================> Whom computers would destroy, they must first drive mad.
>