Solved: Strange Usart behaviour: max232 faulty.

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FRM
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#16 Post by FRM » 27 Feb 2009 22:39

FRM wrote:Protection of the transceiver is essential as it normally provides a gateway into one's digital circuitry from the outside world...I normally employ full protection to the circuit as the expense of board real-estate.
Perhaps I should've summised by adding "for commercial/industrial projects" :wink:

So apparently there is a silicon erratum with this particular MAX232 device? This is one worth remembering for full duplex commercial designs...
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Dusan
mikroElektronika team
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#17 Post by Dusan » 02 Mar 2009 10:16

Dany wrote:Well, anyway, mine went defective. Perhaps add extra ESD protection only when using Maxim devices?
That is one option. Other one is to avoid using MAXIM MAX232 IC. We will start using only TI MAX232.

Best regards,
Dusan Mihajlovic
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Dany
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#18 Post by Dany » 02 Mar 2009 11:09

Dusan wrote:
Dany wrote:Well, anyway, mine went defective. Perhaps add extra ESD protection only when using Maxim devices?
That is one option. Other one is to avoid using MAXIM MAX232 IC. We will start using only TI MAX232.
That is indeed also a solution. :D Thanks!
Kind regards, Dany.
Forget your perfect offering. There is a crack in everything, that's how the light gets in... (L. Cohen)
Remember when we were young? We shone like the sun. (David Gilmour)
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