Z80 Graphic LCD interface

Discussion in 'Embedded Systems and Microcontrollers' started by cmos555, Jun 25, 2009.

  1. cmos555

    Thread Starter New Member

    Jun 25, 2009

    I'd like to interface a Z80 cpu to a monochrome LCD display through a dual port sram.

    The LCD is a 320x240 graphic display but I just want to use it to display 40x25 characters which will be stored in the dual port sram (1KB).

    I'm thinking of using the following hardware: Optrex F-55157GNF-LW-ASN display, and Cypress cy7c130 dual port sram.

    What would be the best way to go about doing this?

    Please would you give me some pointers in the right direction or any sample circuit designs would be very helpful.

  2. beenthere

    Retired Moderator

    Apr 20, 2004
    Has the Optrex display the ability to learn where the data is stored in SRAM, and can it read that data out such that it shows up where you want it in the display space? How will the Optrex know when the data have been changed?
  3. millwood


    it is most likely that you will be communicating with the lcd from a mcu: the lcd has its own controller and build-in ram. so I am not sure why you need sram on your own.

    how to interface with the lcd depends on the particular lcd's design.