I'm looking for a chip that can output a low freq, ~10 hz, pwm signal that I can control with a microcontroller via serial or similar. I've tried to search but "PWM" is a keyword that's too common to be useful. Its a control signal only so current handling isn't an issue. Prefer thru hole but not opposed to SMT if it can do what I need. I'm sure a part like this exists but I don't know how to find it. Any help appreciated.