AVR-Chat

From: Donald H <donhamilton2002@yahoo.com>
To: AVR-Chat@yahoogroups.com
Sent: Sat, June 19, 2010 7:18:38 PM
Subject: [AVR-Chat] Re: ADM 485

  


--- In AVR-Chat@yahoogroups.com, "hussein" <iijfet@...> wrote:
>
> hi dears
> plz tell me how i connect a uC to pc by ADM485 for a full duplex communication,
> how i can set it to receive data or transmit? should i use 2 ADM485?
>

By your question, you have not looked at the data sheet for the ADM485.

Here is a link, http://www.analog.com/static/imported-files/data_sheets/ADM485.pdf

Look at figure 30 on page 12.

Also, http://www.lammertbies.nl/comm/info/RS-485.html

Google is your friend.

In the time it took you to wait for my response, you would have had your answer and would have been on your way to solving your question on your own.

You will be able to turn in this homework assignment with the knowledge your professor wanted you to learn.

good luck

don


 


      

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From: Zack Widup <w9sz.zack@gmail.com>
To: AVR-Chat@yahoogroups.com
Sent: Sat, June 19, 2010 8:05:34 PM
Subject: Re: [AVR-Chat] Re: ADM 485

I discovered a long time ago that all you have to do is enter a part number
into Google and it will come up with lots of data on many parts. And lots of
suppliers in Hong Kong and China.
:-)

A lot of companies are now defunct and it's hard to find data sheets on
their components by this method. I have a big handful of various microwave
devices made by companies like Acrotec that are no longer around and a
search of their part numbers yields nothing. A lot of NEC/CEL devices that
are obsolete are difficult to track down unless someone like me saved their
data sheets while they were still available and put them on a website
somewhere.

But most of the currently produced devices come right up when you do a
Google search of the part number. Certainly AVR micros.

Metcalfe's Law is definitely valid in these cases!
:-]

Zack

On Sat, Jun 19, 2010 at 9:48 AM, Donald H <donhamilton2002@yahoo.com> wrote:

>
>
>
>
> --- In AVR-Chat@yahoogroups.com <AVR-Chat%40yahoogroups.com>, "hussein"
> <iijfet@...> wrote:
> >
> > hi dears
> > plz tell me how i connect a uC to pc by ADM485 for a full duplex
> communication,
> > how i can set it to receive data or transmit? should i use 2 ADM485?
> >
>
> By your question, you have not looked at the data sheet for the ADM485.
>
> Here is a link,
> http://www.analog.com/static/imported-files/data_sheets/ADM485.pdf
>
> Look at figure 30 on page 12.
>
> Also, http://www.lammertbies.nl/comm/info/RS-485.html
>
> Google is your friend.
>
> In the time it took you to wait for my response, you would have had your
> answer and would have been on your way to solving your question on your own.
>
> You will be able to turn in this homework assignment with the knowledge
> your professor wanted you to learn.
>
> good luck
>
> don
>
>  
>


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