3.8. Character LCD controller

The FPGA contains a simple controller that provides an interface to a standard Varitronix MDL(S)-16263 16 x 2 character LCD alphanumeric display module.

The character display is accessed via a custom interface controller implemented in the FPGA. The standard ASCII character set is used to display data.

Figure 3.26. Character display

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The character LCD display can function with either an eight-bit or four-bit data interface. Eight data signals are connected from the display to the FPGA, but only four signals are used by the FPGA to control the interface.

Link LK10 is fitted at manufacture to match the type of display device fitted.

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