CMOS DOT MATRIX LCD DRIVER

IZD1520

1

FEATURES

• CMOS LSI chips

• Connection with CPU

Can be directly coupled with 80-port or 68-port system

• Available in chip form or in 100-pin plastic QFP

• Pin-to-Pin Replacement for SED1520 Series

• Many command set

• Total 80 (segment+common) drive sets

• Low power consumption - 30µW maximum at 2kHz

external clock

• Power supply V

DESCRIPTION

The IZD1520 family of dot matrix LCD (Liquid Crystal Display) drivers are designed for the display of characters and graphics.

The drivers generate LCD drive signals derived from bit mapped data stored in an internal RAM.

The IZD1520 family drivers incorporate innovative circuit design strategies to achieve very low power dissipation at a wide range of operating voltages.

These features give the designer a flexible means of implementing small to medium size LCD displays for compact, low power systems.

The IZD1520 which is able to drive two lines of twelve characters each.

The IZD1521 which is able to drive 80 segments for extension.

ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol

Value

Unit

Supply Voltage (1)

- 8.0 ~ 0.3

V

Supply Voltage (2)

- 16.5 ~ 0.3

V

Supply Voltage (3)

V

Input Voltage

V

Output Voltage

V

Power Dissipation

250

mW

Operating Temperature

- 10 ~ + 75

Storage Temperature

- 65 ~ + 150

Soldering temperature time (10 sec max)

260

Notes:

1.

2.

The following relation must be always hold

≥ V

1

≥ V

2

≥ V

3

≥ V

4

≥V

3.

Exceeding the absolute maximum ratings may cause permanent damage to the device. Functional operating under these

conditions is not implied.

LINE-UP

Product

Name

Clock Frequency

Applicable Driver

Number of

SEGMENT

Drivers

Number of

COMMON

Drivers

Duty

On-chip

External

18kHz

18kHz

61

16

1/16, 1/32

-

18kHz

80

0

1/8 ~ 1/32

-

2kHz

61

16

1/16, 1/32

-

2kHz

80

0

1/8 ~ 1/32