D Yates wrote:
>> I need a chip that gives me 4 channels of PWM . I want
>> 4 simultaneously
>> operating PWM channels.
>> Preferable frequency of
>> generation should be greater
>> than 50 Khz.
>
> PWM doesn't have to be done in hardware.

At that speed and resolution it does.

You're not going to bit bang 4 channels at 50KHz with 8 bits of resolution.
50KHz x 256 = 12.8MHz, or 78nS resolution of the pulse ON time.  How do you
propose to do that with 100nS instructions?


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