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Oscillator Problem

 
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HAMID
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Oscillator Problem
PostPosted: Sat Nov 24, 2007 10:42 am     Reply with quote
Hi,

i using a PIC18F87J10. The PICs runs but only one the quarter speed. I using
a 10Mhz Osc. and set
#FUSE H4_SW

but the PIC runs only with 10Mhz.

Somebody can help me?
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Sat Nov 24, 2007 6:55 pm     Reply with quote
The fuse H4_SW makes it possible to enable the PLL under software control. Besides this flag you need to enable the PLL with setup_oscillator(). (see PIC18F87J10.h file for possible options).
Code:
#include <18F87J10.h>
#fuses H4_SW, NOWDT, NOXINST
...
void main()
{
  setup_oscillator(OSC_PLL_ON);
  ...
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