[Novatek]

General Description

The NT7603 is a dot matrix LCD controller and driver LSI that can operate with either a 4-bit or an 8-bit microprocessor (MPU). NT7603 receives control character codes from the MPU, stores them in an internal RAM (up to 80 characters), transforms each character code into a 5 X 7, 5 X 8, or 5 X 10 dot matrix character pattern, and then displays the codes on the LCD panel. The built-in Character Generator ROM consists of 256 different character patterns.

Features

■ Internal LCD drivers

16 common signal drivers

80 segment signal drivers

■ Maximum display dimensions

16 characters * 2 lines or

32 characters * 1 line

■ Interfaces with 4-bit or 8-bit MPU

■ Versatile display functions provided on chip:

Display Clear, Cursor Home, Display ON/OFF, Cursor ON/OFF, Character Blinking, Cursor Shift, and Display Shift

■ Three duty factors, selected by PROGRAM: 1/8, 1/11, and 1/16

■ Displays Data RAM (DD RAM): 80 X 8 bits

(Displays up to 80 characters)

■ Character Generator RAM (CG RAM):

64 X 8 bits for general data,

8 5 X 8 programmable dot patterns, or

4 5 X 10 programmable dot patterns

■ Low voltage reset

■ ITO option for A-type and B-type LCD waveform

■ Character Generator ROM (CG ROM):

2 kinds of CG ROM sizes:

192 characters:

160 5 X 8 dot patterns

32 5 X 10 dot patterns

240 characters:

192 5 X 8 dot patterns

48 5 X 10 dot patterns

Custom CG ROM is also available

■ Built-in power-on reset function

■ Logic power supply: single +5V supply

■ LCD driver power supply: V1~V5 (VDD+0.3 - VDD-7.0) , divided by Built-in LCD power division resister.

■ Two oscillator operations (Freq. = 500KHz - 540KHz):

• Built-in RC oscillation

• External clock

■ CMOS Process

■ Available in COG FORM