At 08:45 PM 1/9/2002 +0800, Derek Chan wrote: >The manual for the PIC16F84 shows crystal for up to 10MHZ > >If I want to use higher crystals 19.6608MHz, can anybody recommend the >capacitors to put in for the oscillators ? Is there any special circuit >required ? Any help will be appreciated The crystal determines the capacitors. Get the data sheet on the crystal. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.