PWM in PIC microcontroller

[mpv]

hii...

I am using PIC16F917 and able to generate PWM with 500Hz frequency. what is the minimum frequency for PIC to generate PWM. My application requires PWM of frequency less than 10 Hz. but i am not able to generate it. how can i generate a PWM with such a low frequency???

 

[btbass]

If the PWM frequency cant go that low, you could use the 16-bit Timer 1 to generate the pwm.
Use the interrupt routine to bit bang the pwm.

 

[hameeds01]

use a low frequecy crystall

 

[Tahmid]

Hi,
For operation below 10Hz, I think you're better off using software PWM with the 16-bit Timer, as, if you decrease the value of the crystal that much, your microcontroller will become way too slow.
Tahmid.

 

[getye]

Hey...I am working on PIC 18F1320 to generate a sine PWM and I generated it using the PWM module but I need to have two PWM outputs. How can i solve my problem....anybody can help me.

Thanks