BeagleBone Black PWM lowest frequency ?

Can anyone tell me the lowest frequency beaglebone black can get ? I dont own it yet but if it can do what I need, I will buy.

Are you talking about processor frequency or PWN frequency?

PWM output can be generated in two ways. The lowest frequency depends on the used device:

  • ehrpwm: 0,426 Hz (= 100e6 / 0x1FFFF / 1792, 2 x 3 pins available - A and B output @ same frequency)

  • eCAP in PWM mode: 0,0233 HZ (= 100e6 / 0xFFFFFFFF, 1 pin available in default configuration)