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'Two speed oscillator PIC'
1995\11\08@022337 by NEIL B. GANDLER

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I had a thought of getting the best of both worlds in my design, low
power consumption and performance. I'm going to try a two speed oscillator
using an RC network. During low demand times, use the default R & C.
During more demanding times, place another resistor in paralell in
the newtwork to increase speed through an i/o pin on the PIC.
       To me this would work fine if an RC network is feasible
(timing accurary not required). This would also avoid the 18ms
delay in the wakeup of the PIC in sleep and can reduce external
hardware in some applications. I was wondering if anyone tried
something like this. Willing to hear opinions.


               Neil Gandler

1995\11\08@035718 by Andrew Warren

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NEIL B. GANDLER <spam_OUTV064MB9KTakeThisOuTspamUBVMS.CC.BUFFALO.EDU> wrote:

>I'm going to try a two speed oscillator using an RC network. During low
>demand times, use the default R & C.  During more demanding times, place
>another resistor in paralell in the newtwork to increase speed through an
>i/o pin on the PIC.
> ....
>I was wondering if anyone tried something like this.

Neil:

Yes, it works.  Just make sure that your total resistance stays within the
range specified in the data sheet.

-Andy

--
Andrew Warren - .....fastfwdKILLspamspam@spam@ix.netcom.com
Fast Forward Engineering, Vista, California

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