INTRODUCTION

This character driver and controller LSI for liquid crystal dot matrix display systems can display 2-line of 16 characters with the 5 x 8 dots format. It is capable of interfacing various microprocessors, supporting the 4-bit or 8-bit parallel mode. Voltage follower and bias circuit is built in the IC.

FEATURES

Driver Output Circuits

- 16 common outputs / 80 segment outputs

Applicable Duty Ratio

On-chip Display Data RAM

- Character Generator ROM (CGROM): 10,160 bits (254 characters x 5 x 8 dots)

- Character Generator RAM (CGRAM): 80 bits (2 characters x 5 x 8 dots)

- Display Data RAM (DDRAM): 256 bits (16 characters x 2-line)

Microprocessor Interface

- 8-bit parallel interface with 6800-series or 8080-series MPU

- 4-bit parallel interface with 6800-series or 8080-series MPU

Function Set

- Simple instruction set

- COM / SEG bi-directional (4 types of LCD application available)

- Hardware reset (RESETB)

On-chip Analog Circuit

- Internal RC oscillator circuit

- Voltage follower & bias circuit

- Automatic power on reset circuit

Operating Voltage Range

- Supply voltage (VDD): 2.4 to 5.5V

- LCD driving voltage (VLCD = V0 - VSS): 6.0V Max.

Low Power Consumption

Package Type

- Gold bumped chip