[51] how to calculate crytal capasitor value

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Revanth Machineni

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hello friends, can u tell me how to calculate crystal capacitor values. n rectifier cap values. n how to learn c programming for 8051, as i know c but i am unable to understand that 8x80 like that .

Thanks in advance friends
 

Hi,

can u tell me how to calculate crystal capacitor values
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You wiil find the single resonant capacitor value in datasheet.

Usual circuits use two capacitors (one at each leg of xtal) therefore it acts like a series connection of those two capacitors.
Then you need twice the datasheet-value for each capacitor.

example: if given in datasheet: 17pF --> then use two 33pF (ceramics COG/NP0 are a good selection)


Klaus
 

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