Hi: Can somebody explain me why the crystal used in PIC's must be with parallel resonant frequency ? Which would be the result is I use a crystal with series resonance ? Which is the difference ? Thank you. -- | ~~ ~~ /^\ | Jose Pineda | ~~ /^\ / \ ~~ | Fax : +58 2 2426039 | /_ \/ _ \ ~~ | E-mail : jpineda@dino.conicit.ve | / # _ # _ # _ _ \ | Caracas, D.F. | / # # _ # # # # # _ \ | Venezuela |_/______#_#_#_#_#_#_#_#_#_____\_|