Crystal frequency for I2C when using a PIC

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Stanga
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Joined: Sat Aug 07, 2010 10:17 am
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Crystal frequency for I2C when using a PIC

Post by Stanga »

Is there a specific crystal frequency that I should use with say a PIC16F873A? I wish to read and write to a I2C enabled chip that has a maximum 400KHz bus speed. But I have not been able to find any reference regarding what frequency or range of frequency the PIC crystal has to adhere to for correct I2C bus speed.

dazz
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Joined: Sun Jan 15, 2012 3:15 pm
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Re: Crystal frequency for I2C when using a PIC

Post by dazz »

Hi
Have a read of the attached doc, it should help

Regards
Dazz
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UM10204.pdf
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