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Numéro de référence | HCD667B74 | ||
Description | 240-Channel Gate Driver | ||
Fabricant | Hitachi | ||
Logo | |||
HD66774
Rev. 1.0 July 2002
HD66774
240-Channel Gate Driver for Color-TFT Liquid Crystal
Displays
mRev.1.0
oJuly 2002
.cDescription
UHD66774 is a gate-driver IC for systems with color-TFT-liquid-crystal dot-matrix graphic displays.
t4It 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
only an external capacitor.
eeWhen used with the HD66770 396-channel source driver with on-chip RAM, and used with the
HD66772 528-channel source driver with on-chip RAM, this LSI is suitable for color TFT displays
hof cellular phones having 132-by-176 and 176-by-240 dots, respectively.
SFeatures
ta• TFT gate-line driving circuits
a 240 outputs
.D• Gate-line scanning
Centering-screen function (vertically separated, comb type)
w• Internal power-supply circuit
Step-up circuit: five to nine times, positive-polarity inversion
w Structure of TFT-display retention capacitor: Cst or Cadd
w• Alternating functions for TFT-display counter-electrode power supply
N-line alternating drive of Vcom (Vgoff is also available for N-line alternating drive for
Cadd)
Adjustment of Vcom (Vgoff) amplitude: internal 22-level digital potentiometer
• Output power-supply voltage
For the source driver: DDVDH - GND = 4.5 to 5.5 V (power supply for HD66770/772
liquid crystal output circuits), VDH - GND = 3.0 to DDVDH-0.5V (reference power supply
for HD66770/772 grayscale voltages)
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Pages | Pages 30 | ||
Télécharger | [ HCD667B74 ] |
No | Description détaillée | Fabricant |
HCD667B70 | 396-Channel Source Driver | Hitachi |
HCD667B74 | 240-Channel Gate Driver | Hitachi |
HCD667B75 | 120-Channel Gate Driver | Hitachi |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
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