Quoting David VanHorn : > When you do a proper oscillator design, you check oscillation drive > level and margin, as well as the load capacitance. This will tell you > how much additional load the circuit could support. Most of the > crystal makers have good tech notes on how to do this. David, can you provide a link to an example of such notes? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist