HD66773R

 Single chip controller/driver for 262,144-color, 132RGB x 176-dot graphics display on TFT LCD
 18-/16-/9-/8-bit high-speed bus interfaces and a Serial Peripheral Interface (SPI)
 High-speed burst-RAM write function
 Window address function enabling data write in a rectangular RAM-address area
 Internal bit-operation for graphics  Bit-unit write-data mask function  Pixel-unit logical operation / conditionalrewrite function
 Abundant color-display control function:  262,144-color display (max.) with gamma adjustment function  Line-unit vertical bi-directional scrolling display function
 Architecture with low power consumption  Low-voltage operation: V_cc = 2.2 ~ 3.3 V  Internal reference voltage power supply: V_ci = 2.5 ~ 3.3 V  Standby mode and other power-save functions:  Partial LCD drive: 2-screen display at arbitrary two positions  Internal power supply circuit  Internal equalizing function
 Compliant to Cst/Cadd structures
Internal power supply circuits 
   Step-up circuit: 5 ~ 9-time scale, polarity inversion 
   Power supply for TFT common electrode: Compliant to Vcom n-raster-row
   AC drive  AC drive: Vgoff  n-raster-row AC drive with Cadd structure 
   Vcom (V_goff) amplitude adjustment: 22-scale internal electronic volume adjustment 
   Output power-supply voltage 
   Voltages for power supply for       Vcom amplitude = 6V (max.),
    TFT common electrode:                VcomH-GND = VREG1OUT (max.),
                                                        VcomL-GND = 1.0V ~ -Vci+0.5V (max.)
 Internal RAM capacity: 46,464 bytes
 LCD drive circuit with 396-output source signal and 176-output gate signal
 n-raster-row inversion drive: polarity inversion by arbitrary number of lines.
 Internal oscillation and hardware reset
 Changeable source and gate shift directions
 Compliant to COG with single chip, incorporating gates arranged on both sides.

The HD66773R is a controller driver LSI compliant to 132RGB x 176-dot graphics display on TFT LCDpanel in 262,144 colors.  The HD66773R's bit-operation functions, 18-bit high-speed bus interface, andhigh-speed RAM-write function enable efficient data transfer and high-speed update of graphics RAM data.

The HD66773R operates with low voltage up to 2.2V for power supply.  The HD66773R incorporates TFTgate-drive and source-drive circuits, a step-up circuit to generate LCD drive voltage, and power supplycircuits such as breeder resistor and voltage follower for LCD drive, which enable a configuration of LCDmodule only with external elements such as capacitors and resistors.   The HD66773R supports 8-color-display and standby modes, which enable precise power control by software.  These features make this LSIthe best solution for medium or small sized portable products such as digital cellular phones, bi-directionalpagers, or small PDA, which support WWW browser, where long life battery is major concern.