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Electronic Equipment > Microcontrollers 8bit > Re: slowest pra...
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Re: slowest practical baud rate?

by "starfire" <starfire151@[EMAIL PROTECTED] > Dec 30, 2007 at 12:07 PM

"TT_Man" <Someone@[EMAIL PROTECTED]
> wrote in message 
news:SyQdj.20606$ou3.6218@[EMAIL PROTECTED]
> SNIP
>>>
>>> Geo
>>
>> Thanks for the response.  I'll check into the "bray terminal".
>>
>> Yes... I have a simple three-wire interface with a ICL3232 (MAX232 
>> clone). I'm running the whole system on two AA cells (about 3.2VDC with
a 
>> multimeter).
>>
>> I have been trapping the log from the HyperTerminal session to a text 
>> file that I examine in hex after the fact.  The characters (when I see 
>> them) don't look anything like what was sent.
>>
>> Dave
>>
>>
> Normal Max232's won't run reliably at 3.3 V, as I found out recently. 2 
> solutions- use a 2N7000  pulled to RST and set RST true ( works fine for

> me) or use a true 3.3 v compatible mrs232 chip......
>

The Intersil ICL3232 is rated to run from 3.0VDC to 5.5VDC, it only draws 
1uA quiescent current, and it takes 0.1uF caps.

I've never had a problem.   Good chip.


Dave
 




 6 Posts in Topic:
slowest practical baud rate?
"starfire" <  2007-12-29 12:12:51 
Re: slowest practical baud rate?
Geo <9w0b-safk@[EMAIL   2007-12-30 16:20:20 
Re: slowest practical baud rate?
"starfire" <  2007-12-30 10:19:03 
Re: slowest practical baud rate?
"TT_Man" <So  2007-12-30 17:28:18 
Re: slowest practical baud rate?
"starfire" <  2007-12-30 12:07:43 
Re: slowest practical baud rate?
Geo <9w0b-safk@[EMAIL   2007-12-30 19:52:02 

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