HD66760

 104 * 80-dot graphics display LCD controller/driver for 256 STN colors
 Display mode change between 256 colors (8 bits per pixel) and four colors (2-bit per pixel)
 16/8-bit high-speed bus interface
 I2C bus interface
 Clock synchronized serial interface
 Bit-operation functions for graphics processing:
    Write-data mask function in bit units
    Swap function of upper and lower bytes
    Logical operation in pixel unit and conditional write function
 Various color-display control functions:
   256 of the 4,096 possible colors can be displayed at the same time (grayscale palette incorporated)
   Vertical scroll display function in raster-row units
   Color window cursor display supported by hardware
 Low-power operation supports:
Preliminary: The specifications of this device are subject to change without notice.  Please contact yournearest Hitachi's Sales Dept. regarding specification.
   Vcc = 2.2 to 3.6 V (low voltage)
   V_LCD (= V_LPS GND) = 5 to 15.5 V (liquid crystal drive voltage)
   Three-, four-, five-, or  six-times step-up circuit for liquid crystal drive voltage
   128-step contrast adjuster and voltage followers to decrease direct current flow in the LCD drivebleeder-resistors
   Power-save functions such as the standby mode and sleep mode
   Partial LCD drive of two screens in any position
   Programmable drive duty ratios (1/16-1/80) and bias values (1/4-1/10) displayed on LCD
Internal RAM capacity: 8,320 bytes
 312-segment * 80-common liquid crystal display driver
n-raster-row AC liquid-crystal drive (C-pattern waveform drive)
 Internal oscillation, hardware reset and software reset
 Shift change of segment and common drivers

The HD66760, color-graphics LCD controller and driver LSI, displays 104-by-80-dot graphics for 256 STNcolors.  The HD66760's bit-operation functions and a 16-bit high-speed bus interface enable efficient datatransfer and high-speed rewriting of data to the graphics RAM.

The HD66760 has various functions for reducing the power consumption of an LCD system, such as low-voltage operation of 2.2 V/min., a step-up circuit to generate a maximum of six-times the LCD drive voltagefrom 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 a partial display with low-duty drive and standby and sleep modes, allows precise power control.  The HD66760 is suitable for any mid-sized or small portable battery-driven product requiring long-term driving capabilities, such as digital cellularphones supporting a WWW browser, bidirectional pagers, and small PDAs.