112 X 80-dot Graphics Lcd Controller/driver - Hitachi SemiconductorThe 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 low-
voltage 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 bleeder-
resistors. Combining these hardware functions with software functions such as standby and sleep modes
allows fine power control. The HD66740 is suitable for any portable battery-driven product requiring
long-term driving capabilities such as cellular phones, pagers, or electronic wallets. By Renesas Technology
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