A great app note from NXP on cascading multiple LCD driver to work as one large display.
This application note aims to assist designers using NXP LCD segment drivers in making a cascaded design.
Cascading means combining more than one LCD driver in a design in such a way that makes them appear to the rest of the application – especially to the microcontroller and the display – as one larger LCD driver capable of driving a larger display than the individual LCD drivers are able to. Depending on which devices are cascaded, cascading can be easy and straight forward on the one hand, or need some attention to details on the other hand in order to achieve a properly working set-up.