HD66729

HD66729 HD66729 (Low-power 105 x 68-dot Graphics LCD Controller/Driver) Preliminary Rev 0.4a June 25, 1999 Description The HD66729, 105-by-68 dot-matrix graphics LCD controller and driver LSI, displays graphics. It can be configured to drive a dot-matrix liquid-crystal display under the control of a microprocessor connected via a clock-synchronized serial or 4/8-bit bus. The HD66729 has a partial display mode that selects and drives part of the display area by using a low-duty ratio, a centering display mode that places the LCD drive position at the center of the screen, a smooth vertical-scroll display mode and a double-height display mode for the remaining bit-map areas. It continuously displays several of the graphics icons so that the user can easily access a variety of information. The HD66729 has a booster to generate a quintuple LCD drive voltage from a single 1.8-V power supply and voltage-followers to decrease the direct current flow in the LCD drive bleeder resistors. Combini...