Hi, I am having problems in getting a crystal frequency of 20Mhz when a 20Mhz crystal is used when connect to my PIC16F872. I only can get a freq of 800hz at the start when power up not even to the extend of downloading my program yet. Did anyone know why ? thanks
I have same problem with 20 Mhz oscilltor. Mine is 4 pin oscillator. 1> n.c ,2> gnd ,3>output,4> vss. I am giving the output of oscillator to the osc1 of pic microcontroller 16f874a. but oscillator is working on few pf khz not on 20 Mhz .
can anybody help me in this case.