PIC18f2553 clock
Posted: Mon Mar 16, 2015 9:35 pm
Hello Ben:
Running PIC18f2553 with a 48mhz crystal. With a simple test -output on, delay 1 sec, output off - repeat.
I find that the 1 second delay is 3 seconds (I can change that up to 12 seconds by adjusting CPU System Clock Post Scaler.
The indication, to me, is that the configuration settings were incorrect. No matter what I do, I can't get the 1 second flash to be less than 3 seconds.
Can you give me some input? I have attempted to reference the variables in the PIC data, but can't.
Here is my list: (see attachment).
96Mhz PLL Prescaler Divide by 12 (48mhz input]
CPU System Clock Postscaler (osc1/osc2 Src: /1[96mhz PLL Src: /2]
Full Speed USB Clock source selection Clock src from osc1/osc2
Oscillator HS: HS+PLL, USB-HS
Running PIC18f2553 with a 48mhz crystal. With a simple test -output on, delay 1 sec, output off - repeat.
I find that the 1 second delay is 3 seconds (I can change that up to 12 seconds by adjusting CPU System Clock Post Scaler.
The indication, to me, is that the configuration settings were incorrect. No matter what I do, I can't get the 1 second flash to be less than 3 seconds.
Can you give me some input? I have attempted to reference the variables in the PIC data, but can't.
Here is my list: (see attachment).
96Mhz PLL Prescaler Divide by 12 (48mhz input]
CPU System Clock Postscaler (osc1/osc2 Src: /1[96mhz PLL Src: /2]
Full Speed USB Clock source selection Clock src from osc1/osc2
Oscillator HS: HS+PLL, USB-HS