Overview

The LC79400D is a large-scale dot matrix LCD segment driver LSI. Display data transferred from the controller (4-bit parallel format) is processed through 80-bit latching and a LCD drive signal is generated. The LC79400D can be used in conjunction with common driver LC7943D (QIP80D) as well as LC79430D (QIP100D) and LC79431D (QIP100D) to drive a wide screen LCD panel.

Features

• On-chip LCD drive circuit (80 bits)

• Display duty selection ranging from 1/64 to 1/256

• Supports use of chip disable pin for lower large panel power supply dissipation

• Supports externally supplied bias voltage

• Operating power supply voltage/operating temperature include

VDD (logic block) : 5 V ±10 / –20 to +75 °C

VDD-VEE (LCD block) : 12 V to 32 V / –20 to +75°C

• Data transfer clock provides maximum 3.0 MHz and supports bidirectional shift

• 4-bit parallel data input

• CMOS process

• 100-pin flat plastic package