Re: [bascom] OT: 2051 Analog Comparator

[MWoeste@t-online.de (Michael Woeste)]

Hi Steve,
see my remarks below:

>
> Please forgive the OT question.  I have searched the Atmel web site but
cannot
> find any details about the analog comparator within the 2051.
>
>      1.  How do you enable or disable it?
------ not neccessary
>
>      2.  I know that the output can be read from P3.6.   Is the comparator
> always ON?
-- always enabled

>
>      3.  Do I simply have to write 1'S to the Port 1 pins?   Or do these
two
> pins not have the pullup function?

------ no, these port pins have no internal pullup resistor. If you want to
use them as a regulary port pin, you have to add resistory manually.

>
>
>      I saw an APP NOTE  on the Atmel site about doing a crude A/D with
this
> feature.   However, in looking at the code, I did not find the analog
comparator
> initialization routine.
>
> Thanks for your help.
>
> ---- Steve Miller
>
>
>