HD66740 Datasheet, PDF (62/95 Pages) Hitachi Semiconductor – 112 x 80-dot Graphics LCD Controller/Driver

HD66740
Partial Smooth Scroll Display Function
The HD66740 can partially fixed-display the areas of a graphics icon, such as a pictogram or a menu bar,
and perform vertical smooth scrolling of the remaining bit-map areas. Since the PS1 to PS0 bits do not
perform smooth scrolling of the upper first to third display lines but does fixed-display, pictograms can
be placed. When CN1 to CN0 bits are set to 10, the first line is displayed at the bottom edge of the LCD
screen, and the menu bar can be fixed-displayed at the bottom. This function can largely control the
bit-map rewrite frequencies and reduce software loads.
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