Purdy AND711AST-30-EO User Manual

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AND711AST-30/-EO

240 x 64 Dots
Intelligent Graphic Display

The AND711AST-30/-EO is a full dot matrix LCD module
including an LCD controller and display RAM. This device
can display graphic patterns and symbols and is suitable for
a message display for various instruments such as business
machine terminals.

Features

• RoHS Compliant

• Super twist

• 40 character x 8 line capability

• Excellent readability and high contrast ratio

• 8-bit parallel bus for read/write data by CPU interface

• Built-in LCD controller and display RAM (8k byte)

• Character mode, graphic mode, and character and graphic
combination mode

• RoHS compliant

• Wide operating temperatures range (0°C to + 50°C)

• Compact and easily mounted on any equipment

• User-selectable font–6 x 8 or 8 x 8

• Available with EL backlighting attached (-EO option)

Dot Matrix Dimensions

Mechanical Characteristics

Item

Outline
Dimensions

Specification Unit

180 (W) x 65 (H) x 10 (D) mm

Number of Dots 240 (W) x 64 (H)

# of Characters

40 x 8 (320) Characters

6 x 8 dot format, alpha-numeric

Viewing Area 132 (W) x 39 (H) mm

Bezel Opening 132 (W) x 39 (H) mm

Dot Size 0.49 (W) x 0.49 (H) mm

Dot Pitch 0.53 (W) x 0.53 (H) mm

Weight (approx.) I20/150 (ST/EO) gram

Absolute Maximum Ratings

Item

Supply Voltage

EL Drive Voltage
(f

= 1 kHz)

EL

Input Voltage

Operating Temperature

Storage Temperature

EL Driving Freq. (EO)

Symbol Rating Unit

V

DD

V

EE

V

EL

V

IN

T

op

T

stg

f

EL

5.5

-19

130

–.3 ≤ V

+.3

IN

0 to +50 °C

-20 to +70 ˚C

1 kHz

Electrical Characteristics (TA = 25°C)

Item

Supply Voltage

High Level In Voltage
(V

= 5.0V)

DD

Low Level In Voltage
(V

= 5.0V)

DD

High Level Output Volt.
(V

= 5.0V)

DD

Low Level Output Volt.
(V

= 5.0V)

DD

Power Consumption

1. All dots on. (V

2. mA rms

Symbol Min. Typ. Max. Unit

DD

V

V

V

V

V

V

I

DD

(1)

I

EE

I

EL

=

.5V,

V

EE

4.5 5.0 5.5

DD

–5.75 –8.5 –11.5

EE

2.8 – 5

IN

IL

OH

OL

– – 0.8

V

DD

–0.3

– – 0.3 V

– 16.0 25.0

– 2.4 3.0

– 4.0 10

=

–8.5V, V

=110, f

EL

––V

= 500 Hz or at Typ.)

EL

Product specifications contained herein may be changed

without prior notice. It is therefore advisable to contact
Purdy Electronics before proceeding with the design of

equipment incorporating this product.

V

V

rms

V

V

V

mA

(2)

1

Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com

Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085

7/20/07

V

EE

V

DD

GND

LCD Module

R1

R2

R1 = 10k, R2 = 10k, TR 2SA1102 or equivalent

T

R

t

CDS

tCP,tRD,t

WP

t

ACC

t

CDH

t

DH

t

OH

t

DS

C/D

CE

RD, WR

D0-D7

(WRITE)

D0-D7

(READ)

AND711AST-30/-EO

Intelligent Graphics Display

Optical Characteristics (TA = 25˚C, φ = 0°, θ = 0)

Item

Viewing Angle

Symbol Min. Typ. Max. Unit

Right to Left – 80 –

Up & Down – 55 –

degree

Contrast K 2.5 4.8 - -

Turn On

Turn Off

T

on

T

off

- 200 350 ms

- 250 300 ms

Note: Refer to Applications Section for definitions of viewing

angle, contrast ratio, response time (on and off) and
luminance.

Connector Pin Assignment

Pin No.

Signal Function

1 FGND Frame Ground (connected to metal bezel)

2 GND Ground (signal)

3

4

5WR

6RD

7CE

V

Power Supply for logic (5V)

DD

V

Power Supply for LCD Drive (–8.5 ±3V)

EE

Data Write

Data Read

Chip Enable

WR = “L”, C/D = “H”: Command Write
WR

8 C/D

= “L”, C/D = “L”: Data Write

RD

= “L”, C/D = “H”: Status Read

RD

= “L”, C/D = “L”: Data Read

9 NC No connection

10 RESET

Controller Reset (Active Pullup Required)

11 D0 Data Input/Output

12 D1 Data Input/Output

13 D2 Data Input/Output

14 D3 Data Input/Output

15 D4 Data Input/Output

16 D5 Data Input/Output

17 D6 Data Input/Output

18 D7 Data Input/Output

19 FS

Font select. Open or connect to V
Connect to ground: 8 x 8 dot

: 6 x 8 dot

DD

20 NC No connection

Power Supply

The LCD panel is driven by the voltage V
adjustable V

is required for contrast control and

EE

temperature compensation.

Temperature Variations

Temperature

0°C 13.9

+25°C 12.5

+50°C 10.8

Example of Variable Negative Voltage Supply

DD

–V

, so an

EE

V

–V

DD

EE

Timing Relationships and Diagram

Signal Timing Relationships

Item

C/D Set Up Time

C/D Hold Time

CE

,

RD

,

WR

Pulse Width

Data Set Up Time

Data Hold Time

Access Time

Output Hold Time

Timing Diagram

Symbol Min. Max. Unit

t

CDS

t

CDH

t

t

t

CE,

RD,

t

DS

t

DH

t

ACC

t

OH

WR

100 –

10 –

80 –

80 –

40 –

– 150

10 50

ns

7/20/07

Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com

Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085

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