Electronic – this thing called “LCD interface” found in MCU datasheets

lcdmicrocontroller

When browsing ARM MCU datasheets I often find a thing called an "LCD Controller" or "LCD Interface" and I'm wondering what it is and how it works.
It's present on the LPC3130[link|datasheet] and referred to as "Integrated 4/8/16-bit 6800/8080 compatible LCD interface"
I think it's a sort of controller for common bus used in Displays.
Questions:
1.What is the "pinout" of the bus? What do the lines transmit? I want to now how this works.
2.What sort of LCD is this able to control? Graphic? Alphanumeric?
3.Does this mean the MCU has an built in GPU inside to control the Graphics?

Best Answer

this one looks like a parallel I/O port designed for talking to COG (chip-on-glass) LCD panels

  1. 4-16 parallel data and 2 handshaling lines
  2. graphic panel with (chip-on-glass) or alphanumeric panel
  3. no. these types of panel are persistent and don't need refresh, if you you want graphics you will have tp place every pixel.
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