Re: [avr-gcc-list] newbie trying to get at90s8515 to work on breadboard

[Günter Dannoritzer]

Hi Chris,

http://www.national.com has a nice page where you can just enter the 
requirements that you have and they make a proposal of the regulator to 
use and a circuit with all the parts needed.

Guenter




Chris Donovan wrote:

> > > I have connected pin 40(vcc) to the +9V supply(tried 5-9V) with
> > > misc
> > > resistance to lower it to 5V.  When I connect up portb0 on the
> >
> > Use a voltage regulator. When one is a beginner do not add to the
> > variables. Use components and circuits that one knows works. A  LM7805
> > Regulator with a 10uF Cap on the output should do the trick. Use some
> > decoupling caps as well. 100nF should be fine.
> >
> > Make sure of your oscillator circuit as well.  If the code works in
> > the MCU on another board, then the problem is most likely with your
> > circuit.
>
>
>   Where can I find out more about voltage regulators and how they work? 
> More to the interest of what type I need and how to figure it out on my
> own.  I really am quite new to this whole electronics thing.  Simliar
> perhaps to ohm's law about finding out the resitance I need to lower my
> voltage, and other variables.
>
> Chris-
>
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