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Re: [ts-7000] Re: interrupt driven GPIO

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Subject: Re: [ts-7000] Re: interrupt driven GPIO
From: Jim Jackson <>
Date: Sat, 3 Dec 2005 10:32:28 +0000 (GMT)

> > Why? What's wrong with just a couple of resistors or zener and resistor?
> > Jim
> >
>
> Well, because the IR sensor I need runs off of 5V;

Fine run the power line from the 5V line.

> ...if I can get 5V TTL
> then it's just a matter of hooking it up...  Otherwise, I will need
> more components to provide 5V.  I'm thinking one pin to power it, one
> pin to sense it.  Simple....

Yes. As I said just use a couple of resistors or a resistor and zener to
limit the output to 3.3v and feed to one of the 3.3v gpio pins.

> OTOH, if one of the hardware folks has any suggestions for connecting
> a Vishay TSOP 1738 or similar to the 3.3V GPIO on the tx7xx0 boards
> I'd love to hear them....

Sorry its a no brainer.

Jim



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