NJU6434

Ver.2009-11-12

-1 -

1/4 DUTY LCD DRIVER

! GENERAL DESCRIPTION

The NJU6434 is a 1/4 duty LCD driver for segment type

LCD panel.

The LCD driver consists of 4-common and 50-segment

drives up to 200 segments.

The NJU6434 is useful for the digital tuning system or

others segment type display driver.

! FEATURES

# 50 Segment Drivers

# Duty Ratio 1/4 (Up to 200-Segments)

# Serial Data Transmission (Shift Clock 2MHz max.)

# Oscillation Circuit On-chip (External Resistance Required)

# Display Off Function (INHb Terminal)

# Operating Voltage

2.4 to 5.5V

# LCD Driving Voltage

2.4 to 6.0V

# Package Outline

Chip, QFN 64-S4, QFP64-H2

# C-MOS Technology

P-Sub

! BLOCK DIAGRAM

! PACKAGE OUTLINE

PRELIMINARY

VLCD

INHb

CE

VSS

OSC1

VDD

Oscillation

Divider

Shift

Register2

50-bit

Input

Select

Shift

Register1

50-bit

Input

Select

Shift

Register4

50-bit

Input

Select

Shift

Register3

50-bit

Input

Select

Decoder

Shift Register

Control Circuit

Input Select Circuit

OSC2

DATA

MODE

SCL

Latch Circuit / Segment Driver

LCD Driving

Voltage Circuit

Common Driver

Reset

Circuit

NJU6434KS4

NJU6434C

NJU6434FH2