hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 6

• Manufacturer Part Number: hd66789
• Description: 528-channel, One-chip Driver For Amorphous Tft Panels With 262,144-color Display Ram, Power Supply Circuit, And Gate Circuit
• Manufacturer: Renesas Electronics Corporation.

HD66789
Features
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Rev.0.12, May 09 2003, page 6 of 156
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Liquid crystal controller/driver for 262,144 TFT-color 176RGB x 240-dot graphics display
Single chip solution for a TFT display panel
System interface
Interface for moving picture display
High-speed burst RAM write function
Window address function to write data to the rectangular area of RAM specified by the window
address
Bit unit operations for processing graphics
Functions for controlling abundant color displays
Low-power architecture: features for low-power operation
Step-up circuit generating liquid crystal drive voltage up to 6-time scale
95,040-byte internal RAM
Incorporated liquid crystal display driver with 582 source outputs and 240 gate outputs
n-raster-row liquid crystal AC drive, enabling polarity inversion by every arbitrary number of raster-
rows
Internal oscillation and hardware reset
Reversible direction of signals between RAM and source driver
Exclusive for Cst structure
8-/9-/16-/18-bit high-speed bus interface
Serial Peripheral Interface (SPI)
8-bit transmission x 3 times (262k/65k color modes)
6-/16-/18-bit RGB interface (VSYNC, HSYNC, DOTCLK, ENABLE, PD17-0)
VSYNC interface (System interface + VSYNC)
Interface to facilitate moving picture display in an arbitrary area
Reduce data transmission by transmitting only the data for the moving picture display area
Simultaneous display of moving pictures and the contents of the internal RAM
Write data mask function by bit
Simultaneous availability of 262,144 colors with J-correction function
Line-unit vertical scrolling
Vcc = 2.4 ~ 3.3 V (internal logic power supply)
IOVcc = 1.8 ~ 3.3 V (interface I/O power supply)
Vci = 2.5 ~ 3.3 V (analogue power supply)
DDVDH = 4.5 ~ 5.5 V (liquid-crystal drive voltage)
Power saving function (standby mode etc.)
Partial liquid crystal drive to display two screens at arbitrary positions
Voltage followers for liquid crystal drive power circuit to fend off the direct current from bleeder-
resistors
Preliminary