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Hello,
I use a pic 16f876 20sp with oscillator 20 mhz and 2 capacitors 33 pf and
my prog is:
Define osc 20
loop: PORTB.0=0
Pause 500
PORTB.0=1
Pause 500
Goto loop
End
Why my prog doesn't work? I don't understand because the same prog with pic 16f876 4sp with oscillator 4 mhz and 2 capacitors 33 pf works ( lineless
Define osc 20)
If you know with probleme please help me!
Thank you Kris
33pF seems high at 20MHz... remove the Caps and see if it works then.
Are you setting oscillator selection bits in config word for HS?
A 20MHz crystal requires a higher drive level output on osc2. Make sure you
set config word for HS instead of XT.
I changed my caps by 10 pF and my pic work correctly.
I have another question, How you choose yours caps ?
thank you
If I told you Kris, everybody would start doing it...
Aw, all right, just between you and me - I read the PIC Datasheet!