BU97550KV

General Description

The BU97550KV-M is 1/8, 1/7, 1/5, 1/4, 1/3, or Static

general-purpose LCD driver.

The BU97550KV-M can drive up to 528 LCD Segments

directly. The BU97550KV-M can also control up to 9

General-Purpose/PWM output ports.

These products also incorporate a key scan circuit that

accepts input from up to 30 keys to reduce printed circuit

board wiring

Features

 AEC-Q100 Qualified  (Note)

 Key Input Function for Up to 30 Keys (A key scan is

performed only when a key is pressed.)

 Either 1/8, 1/7, 1/5, 1/4, 1/3 or Static

Can be Selected with The Serial Control Data.

1/8 duty drive: Up to 528 Segments can be driven

1/7 duty drive: Up to 469 Segments can be driven

1/5 duty drive: Up to 345 Segments can be driven

1/4 duty drive: Up to 280 Segments can be driven

1/3 duty drive: Up to 210 Segments can be driven

Static drive: Up to 70 Segments can be driven

 Serial Data Control of Frame Frequency for Common

and Segment output Waveforms.

 Serial Data Control of Switching Between The

Segment output Port, PWM output Port and

General-Purpose output Port Functions.(Max 9 ports)

 Built-in Oscillation circuit

 Integrated Voltage Detected Type Power on

Reset(VDET) circuit

 No External Component

 Low Power Consumption Design

 Supports Line and Frame Inversion

(Note) Grade 3

Key Specifications

■  Supply Voltage Range:  +2.7V to +6.0V

■  Operating Temperature Range:  -40°C to +85°C

■  Max Segments:  528 Segments

■  Display Duty  Static, 1/3, 1/4, 1/5, 1/7, 1/8

Selectable

■  Bias: 1/2, 1/3, 1/4 Selectable

■  Interface:  3wire Serial Interface

Applications

 Car Audio, Home Electrical Appliance,

Meter Equipment etc.