What is this thing called "LCD interface" found in MCU datasheets?
this one looks like a parallel I/O port designed for talking to COG (chip-on-glass) LCD panels


4-16 parallel data and 2 handshaling lines 
graphic panel with (chip-on-glass) or alphanumeric panel
no. these types of panel are persistent and don't need refresh, if you you want graphics you will have tp place every pixel.