hello, I have a couple of hc18u quartz crystal oscillator.. and I could not find datasheet on the net.. basically my problem is I dont know if they are parallel cut or series cut crystal's... and what's recommended capacitor C1 C2 values to use and just incase they are strip cut crystal what resistor to use.. and I'm not sure of using the recommended values specified in the microchip datasheets.. should I use them? The labels on the component says: TIC 10.000MHZ F19 hope anybody here knows this component lend a helping hand by ponting me to the right direction... thanks a lot... -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist