How to set sample rate in pic18f4550

[sana'a]

hi everybody
i'm new in the pic world and i have a final project using pic18f4550.
in my project i need to use the internal ADC of the pic,but i don't know how
to set the sample rate.
i tried with the datasheet but got nothing.
also i need to know how long it takes to convert an analog input to its
digital form.


sorry for my poor english

 

[FvM]

Most applications use to start individual ADC conversions by software. 18F4550 has however the option to start the ADC by a (CCP1) timer event. Data processing would be initiated by an ADC EOC interrupt in this case. The 18F4550 datasheet has all necessary details.

 

[sana'a]

i'm trying to get the digital form of an audio with sample rate 8KHz
how to make the ADC sampling with this rate?