kvrajasekar
Junior Member level 3
Hi all,
I am interested to implement PLL using pic16f72.
1.Is it possible to implement with 16f72?
2.I want to synchronize with mains.(free run mode freq is 50 hz)I dont know where to start.my lock range is about 48hz - 52 hz. I am using 4 MHZ crystal for 16f72. Incoming mains is 50hz.
3.I read few article that says,to implement PLL in software,it require a reference clock freq and incoming freq.clock freq is divided by incoming freq to produce the output freq.it gives the up/down count value.Is it true?
4.what is mean by clock freq?is that same as the 4 Mhz crystal or different one?
for 4 Mhz my count value is 200.(4mhz/(2*t ref)).where t ref is 50 hz.
Please correct me if anything wrong?
I am interested to implement PLL using pic16f72.
1.Is it possible to implement with 16f72?
2.I want to synchronize with mains.(free run mode freq is 50 hz)I dont know where to start.my lock range is about 48hz - 52 hz. I am using 4 MHZ crystal for 16f72. Incoming mains is 50hz.
3.I read few article that says,to implement PLL in software,it require a reference clock freq and incoming freq.clock freq is divided by incoming freq to produce the output freq.it gives the up/down count value.Is it true?
4.what is mean by clock freq?is that same as the 4 Mhz crystal or different one?
for 4 Mhz my count value is 200.(4mhz/(2*t ref)).where t ref is 50 hz.
Please correct me if anything wrong?
