Saving device clock in a project

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Frank
Posts: 12
Joined: 31 Mar 2005 20:57
Location: Eindhoven, NL

Saving device clock in a project

#1 Post by Frank » 31 Mar 2005 21:04

Since I'm using an external oscillator with a 4 Mhz crystal that runs at 12 MHz for some stupid reason ( :evil: ), it would be nice if I could save the device clock in the project itself.

Every time I have to make sure I change the frequency to avoid banging my head against the wall......
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LGR
Posts: 3204
Joined: 23 Sep 2004 20:07

#2 Post by LGR » 31 Mar 2005 22:52

I'm not a crystal expert, but it sounds like it is oscillating at 3rd overtone. You may need different capacitors. :?:
If you know what you're doing, you're not learning anything.
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Frank
Posts: 12
Joined: 31 Mar 2005 20:57
Location: Eindhoven, NL

#3 Post by Frank » 01 Apr 2005 20:29

Hi LGR,

in case of the oscillator, you're right.
It must be a overtone frequency.

About saving the crystal-frequency in the project :

I was using version 2.1.5.0.
After downloading 2.1.6.0, the frequency is being saved !!!

Thanks for your replay.

Frank.
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LGR
Posts: 3204
Joined: 23 Sep 2004 20:07

#4 Post by LGR » 01 Apr 2005 20:41

Again, I'm not an expert, but soemwhere in the back of my mind, I recall that if it is being driven to overtones, that the current may be high, and the equipment could be damaged. Or maybe not. :?: :?:
If you know what you're doing, you're not learning anything.
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