Description
The HD66764 is a common-driver LSI for systems with color-liquid-crystal dot-matrix graphic displays. It incorporates 176 LCD drive circuits and power-supply circuits. An external capacitor is also needed for the liquid crystal display.
This LSI, when used with the HD66763 384-channel segment driver with on-chip RAM, is suitable for color displays of cellular phones to a maximum of 128-by-176 dots.
FEATUREs
• LCD drive circuits
- 176 outputs
• Internal power-supply circuit
- Step-up circuit: twice to 12 times, positive-polarity inversion
- Bias setting: 1/2 to 1/13, programmable
- Contrast adjustment: 128-level programmable volume
- Dividing resistors: built-in (controls the bias)
- Setting: serial transfer from the HD66763 segment driver
• Low power consumption
• Power-supply voltage
- Vcc = 1.8 to 3.6 V
• LCD drive voltage
- VLCD-VEE = 10 to 44 V (VM standard: ± 5 to ± 2 2 V)
• Package
- TCP and chip