[TI-H] Re: Calc Port Voltage


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[TI-H] Re: Calc Port Voltage





On Friday, August 16, 2002, at 10:59 AM, Shyam Dwaraknath wrote:

> Oh yeah this is for a Radio link project that i am trying to make. I
> found a great chip from Xemics for around $10. Its called Xe1202. The
> site is www.xemics.com <http://www.xemics.com/> . It uses a 3V Supply an
> I wanted to use microcontroller with a good amount of Sram and an SPI so
> it could program the Xe1202. That's why I choose the Atmega8L. I need to
> Interface the Atmega8L to the link port. But I don't want to use 5V for
> the Supply cause its use way too much current? Instead I wanted to use
> 3V. If you have any suggestion please comment.

You could always step the supply voltage down to 3V for the chip, the 
PIXpander uses a 2 resistor voltage divider for the 3.3V required for 
the memory card. It does work.




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