Enable pin with maximum 3.0v
Yes, you could just use a simple voltage divider.  However, if you wanted to do it in a more fancy way with the 3.0V supply, you could use a simple resistor and transistor (NPN or N-channel logic level MOSFET) arrangement which inverts the pin so it becomes active low:







simulate this circuit &ndash; Schematic created using CircuitLab

So to activate your enable pin you would output a logic LOW, and to disable it a logic HIGH.  It then also becomes the same as most other "Chip Enable" pins which are active low.