Post by thread:32Khz CLOCK

>I'VE GOT A 32768Hz WATCH XTAL CONNECTED TO A PIC84 IT HAS A Rs VALUE >OF 22k (25K RECOMMENDED BY THE MANUFACTURER) AND TWO 10pF CERAMIC >CAPS TO GROUND. THE OSCILLATOR OUTPUT ON PIN 15 HAS A PERIOD OF >4.96uS. IT SHOULD BE 30.517uS SHOULD'NT IT ( IF THE CLOCK OUT IS /4 >THEN THIS WOULD GIVE 122uS ). > I used around 100pf capacitors & 10K ohms (but I'm guessing). It works. Check your oscillator programming fuses (did you tell the PIC its an RC?). Are you using a breadboard? A year back, I had a nasty problem with the oscillator malfunctioning depending on what was under the breadboard- my steel desk changed the capacitance of the circuit.