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Forum: µC & Digital Electronics Problem with the crystal


Problem with the crystal
von Edgar Robles (Guest)

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Hello,

Happy New Year to all.

I have a problem with the crystal, it doesn't oscillate, and i don't 
know why

I am using a microcontroller MSP430F1611, and a 8 MHz crystal, I have 
already tested with many crystals and nothing works.

The crystal is connected to the microcontroller through the pins 52 
(XT2IN) and 53 (XT2OUT), and to 2 capacitor of 15 pF each one, in each 
side of the crystal. (These both capacitors are connected to ground)

Also I have replaced the microncontroller with a new one, but the 
results is the same, no oscillation.

Anyone knows something about it??

I would appreciate your help.

Regards,

Edgar Robles

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Re: Problem with the crystal
von The D. (devil_86)

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Keyword: Fuses.

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Re: Problem with the crystal
von Jörg S. (joerg-s)

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> Keyword: Fuses.
On a MSP430? I don't think so...

@Edgar
Source Code?

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Re: Problem with the crystal
von The D. (devil_86)

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Jörg S. wrote:
> On a MSP430? I don't think so...

Oh...blame on me...

Maybe wrong wiring?

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Re: Problem with the crystal
von Mike J. (Guest)

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Hey Edgar,
you have to initialise the crystal.

Here are some code examples:
http://www.mikrocontroller.net/articles/MSP430_Codebeispiele#Initialisierung_der_Quarze

lg

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Re: Problem with the crystal
von Edgar Robles (Guest)

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Its working now..

Thanks to all.

lg

Edgar

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