Mar 8, 2004 #1 T tgq Full Member level 5 Joined Jul 15, 2002 Messages 289 Helped 7 Reputation 14 Reaction score 4 Trophy points 1,298 Activity points 2,360 hi any has experience to drive a CMOS input (or MOSFET gate ?) with osc2 pin (PIC XT or LP crystal oscillator) when we need another clock in the harware ?
hi any has experience to drive a CMOS input (or MOSFET gate ?) with osc2 pin (PIC XT or LP crystal oscillator) when we need another clock in the harware ?
Mar 8, 2004 #2 C C-Man Advanced Member level 4 Joined Jul 19, 2001 Messages 1,059 Helped 90 Reputation 180 Reaction score 17 Trophy points 1,318 Activity points 10,189 I have done that in a few designs with 16F877 and 16F628 works without problems for me. Try to keep the connection as short as possible and connect only one input to osc2. I also did it the other way (connecting a clock to osc1) which also worked perfect for me. best regards
I have done that in a few designs with 16F877 and 16F628 works without problems for me. Try to keep the connection as short as possible and connect only one input to osc2. I also did it the other way (connecting a clock to osc1) which also worked perfect for me. best regards
Mar 8, 2004 #3 T tgq Full Member level 5 Joined Jul 15, 2002 Messages 289 Helped 7 Reputation 14 Reaction score 4 Trophy points 1,298 Activity points 2,360 thanks Cman as i have to take a CMOS buffer, what is the 'best' solution : * wire its input to OSC2 * or build an oscillator with it and drive the PIC ext-OSC input ?
thanks Cman as i have to take a CMOS buffer, what is the 'best' solution : * wire its input to OSC2 * or build an oscillator with it and drive the PIC ext-OSC input ?
Mar 8, 2004 #4 C C-Man Advanced Member level 4 Joined Jul 19, 2001 Messages 1,059 Helped 90 Reputation 180 Reaction score 17 Trophy points 1,318 Activity points 10,189 I would wire it to PIC oscout and use the builtin oscillator of the pic. Never had a problem using it this way best regards
I would wire it to PIC oscout and use the builtin oscillator of the pic. Never had a problem using it this way best regards