I would like to know what formulae is used to calculate the frequency of an RC oscillator. I have tried a few formulae that I have come across in my books on electronics but none of them come close to the values calculated by Microchip. I would really appreciate any help. Thanks in advance Gavin ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vulcan@icon.co.za http://mail.icon.co.za/~vulcan/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This message was sent by Chameleon