Apr 22, 2005 #1 asic1984 Full Member level 5 Joined Nov 15, 2003 Messages 257 Helped 4 Reputation 8 Reaction score 1 Trophy points 1,298 Activity points 2,340 hi what is the suitable capacitor value for osciallator capacitor which is 20MHZ or 10 MHZ for pic 16f877 thanks
hi what is the suitable capacitor value for osciallator capacitor which is 20MHZ or 10 MHZ for pic 16f877 thanks
Apr 22, 2005 #2 P pirev Junior Member level 2 Joined Mar 14, 2005 Messages 20 Helped 2 Reputation 4 Reaction score 0 Trophy points 1,281 Activity points 1,476 I'am using from 18 to 33pF ( usually 22pF ). I thing that range is not a critical.
Apr 22, 2005 #3 SphinX Advanced Member level 3 Joined Jan 25, 2002 Messages 822 Helped 58 Reputation 116 Reaction score 29 Trophy points 1,308 Location EGYPT Activity points 7,045 Hi, Look at the datasheet page 123. SphinX
Apr 22, 2005 #4 C Cortex Full Member level 3 Joined Mar 26, 2005 Messages 182 Helped 12 Reputation 24 Reaction score 4 Trophy points 1,298 Location Morocco Activity points 2,733 33pf sould be ok
Apr 23, 2005 #5 N Noman Yousaf Full Member level 4 Joined Nov 19, 2003 Messages 208 Helped 3 Reputation 6 Reaction score 2 Trophy points 1,298 Location Lahore Pakistan Activity points 1,763 18-33pf would be batter
Apr 23, 2005 #6 J jdhar Full Member level 5 Joined Aug 16, 2004 Messages 258 Helped 16 Reputation 32 Reaction score 2 Trophy points 1,298 Activity points 2,753 I believe the formula is Cload = (2Cosc) // (Cboard), where Cboard is typically 5pf, and Cload is specified by the Oscillator.
I believe the formula is Cload = (2Cosc) // (Cboard), where Cboard is typically 5pf, and Cload is specified by the Oscillator.