Quick PIC question RE Hz

[theteaman]

Hi

If I use a 20MHz crystal, the PIC runs at 5MHz or 5,000,000 Hz.... Also, most instructions run for one cycle, with some running for 2 or 3 cycles.

Then, say I have a loop that simply toggles an output pin on/off, and say, one iteration of the loop is approximately 10 cycles, would the output pulse of the pin equal 5MHz/10 = 500kHz?

thanks

[Douglas Kennedy]

Yes goto statements take up two cycles everything else one cycle so if 10 cycles is your total in your loop the pin will go high and low 5 mhz/10 or 500 khz.

[theteaman]

great, thanks!