a way to use 4 pwm ch's on 16F684?

[cagacug]

Hi,

Is there a way to use the 4 ( or more than 1) channels of 16F684 individually? I mean can we use 4 different duty_cycles for each ch?
Has any body deal with it or saw any info about it?

Be well, all.

[Ttelmah]

There are not four PWM channels on the 684.
What it offers, is 'full bridge' mode, and in this, four output pins are available, _but only two can be used at a time_, with just one PWM timer source. There is just one set of PWM timing registers. These modes are supported by CCS. It only has one CCP.
I'm afraid if you want four (or even two) properly seperate PWM times, you need to look at another chip...

Best Wishes

[ljbeng]

What kind of duty cycle are you looking for? A timer interrupt could be used to realize 4 PWM outputs. It depends on how critical the timing must be. If you want ms on / off times, then a 16f84 on a 20 mhz crystal and using timer0 interrupt ought to get you some nice PWM outputs....

[cagacug]

Thanks.
I already written software version, but if the hardware ones can be used it will good of course