| The T6963C graphics controller chip is designed to control small to
medium size graphic Liquid Crystal Display modules (LCD). It may be interfaced with a
number of different 8-bit micro-processor units (MPU) such as the Z-80. It provides the
necessary interface between the MPU and the video RAM (VRAM). It also generates the
necessary timing and data signals for the liquid crystal driver circuits. It has a 128
character Character-Generator ROM (CG-ROM) and has the capability to control upto 64K
bytes of external display RAM (VRAM). This VRAM may be allocated for text, graphics and
external character-generator RAM (i.e. a user definable character generator). The T6963C
can support a wide variety of LCD formats and has the ability to combine text and graphics
data on to the LCD. A number of character attribute functions are also available. This application note is not written with any specific display in mind but is intended to give a thorough understanding of how to use the T6963C and implement the software/hardware interface. Some LCD modules will have the T6963C controller built into the module and many of the T6963C hardware selectable features will be hardwired by the PCB traces and not user-selectable. |
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