HX8609A Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – 240 Channel TFT Gate Driver with Internal Power IC

HX8609A
240 Channel TFT Gate Driver with Internal Power IC
HX8609A
240 Channel TFT Gate Driver
with Internal Power IC
April 2003, Version 1.0
1. General Description
HX8609A is a gate-driver IC for using in systems with color-TFT-liquid-crystal dot-matrix graphic
displays. It incorporates a circuit for driving 240 channels of TFT gate-line driving and all the
power-supply circuits that are required for liquid crystal displays, and realizes the liquid crystal display by
adding external capacitors.
When used with the HX8302A 396-channel source driver with internal RAM, and used with the
HX8301A 528-channel source driver with internal RAM, this LSI is suitable for color TFT displays of
cellular phones having 132-by-176 and 176-by-240 pixels, respectively. The LSI has functions such as
instruction setting from source driver, internal step-up circuit, op-amp circuit, micro-adjustment of power
output etc., and is suitable for midium-small potable machine such as mobile phone, small-size PDAs.
2. Features
• TFT gate-line driving circuits
 240 outputs
• The driving timing suitable for configuration of TFT structure in display
 Cst structure (Cs-on-common TFT structure)
• 2 Vcom output voltages : Vcom and Vcom2 which is alternating between VcomL , VcomH and
VcomL2 , VcomH2.
• Alternating driving for TFT-display common-electrode power supply
 N-line alternating drive of Vcom
 Adjustment of Vcom amplitude : internal 22-level digital potentiometer.
 Adjustment of Vcom high voltage : internal 30-level digital potentiometer / externally adjusted by
variable resistor.
• The instruction transfer for mode setting
 Serial transfer from the HX8301A/8302A source driver
• Low-power consumption operation
 Controlling function for the switching performance of step-up circuits and operational amplifiers
• Input power-supply voltage
 Vcc – GND = 1.8 ~ 3.3 V (Power supply for logic circuit)
 Vci – GND = 2.5 ~ 3.3 V (Power supply for analog circuit)
1
Version 1.0
Himax
Technologies, Inc.