HD66740 Datasheet | Hitachi Semiconductor

Description The HD66740, 112-by-80 dot-matrix graphics LCD controller and driver LSI, displays graphics such as text, kanji and pictograms. It can be configured to drive a dot-matrix liquid crystal under the control of the microprocessor connected via the clock-synchronized serial or 4/8-bit bus. The HD66740 has a smooth vertical scroll display and a double-height display for the remaining bit map areas. It fixed-displays a part of the graphics icons so that the user can easily see a variety of information. The HD66740 has various functions to reduce the power consumption of an LCD system such as lowvoltage operation of 1.8 V min., a booster to generate maximum five-times LCD drive voltage from the supplied voltage, and voltage-followers to decrease the direct current flow in the LCD drive bleederresistors. bining these hardware functions with software functions such as standby and sleep modes The HD66740 is suitable for any portable battery-driven product requiring allows fine power control. long-term driving capabilities such as cellular phones, pagers, or electronic wallets. Features - Control and drive of a graphics LCD - 112 x 80-dot display - Fixed display of graphics icons (pictograms) - Low-power operation support:  Vcc = 1.8 to 3.6 V (low voltage)  VLCD = 4.5 to 15.0 V (liquid crystal drive voltage)  Triple, quadruple, or five-times booster for liquid crystal drive voltage  64-step contrast adjuster and voltage followers to decrease direct current flow in the LCD drive bleeder-resistors  Power-save functions such as the standby mode and sleep mode supported  Programmable drive duty ratios and bias values displayed on LCD - High-speed clock-synchronized serial interface (serial transfer rate: 5 MHz max.) - I2C bus interface - High-speed 4-/8-bit bus interface capability - 112-segment × 80-mon liquid crystal display driver - 1,120-byte (112 × 80 dots) character generator RAM .. - Vertical smooth scroll - Partial smooth scroll control...