Functional Description

The LCDCA display memory stores the values of all segments to display and should be filled before the next frame starts.

The start of a new frame triggers the update of the shadow display memory. The content of the display memory is copied into the shadow display memory. A display memory refresh is possible without affecting data that is sent to the panel.

Note: The LCDCA display memory is not initialized at power-up.
When any bit in the display memory is written to a one, the corresponding LCD segment will be energized and opaque. If the same bit has zero written to it, then the corresponding LCD segment is de-energized and thus transparent.