on 16F84 there is a better way than u/f converter, take a look at:

http://www.dattalo.com/technical/software/software.html

there are also a few application note on Microchip on this theme.

best, Vasile



On Thu, 21 Feb 2002, marco genovesi wrote:

> Hi all,
> I have to interface my 16F84 Datalogger ( 4.5V supply) with sensors that
> have a voltage output, but in my board I have only one free pin (RA4), so
> I'm thinking to a voltage-frequency converter. I need 8 bit resolution.
> For a lot of reasons, I would like a really cheap solution, preferably not
> over 2-3$.
> I have seen that a 4046 CMOS has a voltage-controlled oscillator, but I
> haven't never used it: can it be an acceptable solution for my specs or I'm
> going in a wrong way? Have anyone any suggestion about 4046 VCO use or other
> low cost alternatives?
> Thanks in advance
>
> Marco
>
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