Atmega 128 chip can only have 7 PWM outputs at most. If you want your 8-bit PWM mode, with a crystal oscillator of 1 1.0592MHz, and the PWM frequency reaches 43.2HKz, it is easy to use a single chip microcomputer to do PWM, but you just didn't expect it. As for the method of 1L, ordinary single chip microcomputer is also possible. Now the single-chip microcomputer is equipped with PWM, so as long as the relevant registers are set, there is no need for program intervention.

But as you said, it is really difficult to find a chip with 8 PWM outputs, because who will use so many at once? Ha ha, just kidding, if one chip is not enough, add another.