Purdy AND731GST User Manual
0 ≤
≤
AND731GST/GST-LED
4 Lines x 16 Characters
Intelligent Character Display
The AND731GST/GST-LED devices are compact, LCD
modules that have an on-board LCD controller and driver
circuit. These devices can display 160 characters (numerals,
letters, symbols and Kana letters, as well as eight custom
characters.
Features
• RoHS Compliant
• AND731GST: Super Twist Technology
• AND731GST-LED: STN with LED backlight
• Low voltage, +5V single power supply
• Built-inController
• 5 x 7 Dots with cursor
• 1/16 Duty cycle
• 4.2V LED forward voltage
Mechanical Characteristics
Item Specification Unit
Outline
Dimensions
87 (W) x 60 (H) x 8.8 (D) (12.7 LED) mm
Character Size 2.95 (W) x 4.75 (H) mm
Viewing Area 62 (W) x 25.6 (H) mm
Character Pitch 3.55 (W) x 5.35 (H) mm
Dot Size 0.55 (W) x 0.55 (H) mm
Dot Pitch 0.60 (W) x 0.60 (H) mm
Absolute Maximum Ratings
Item Symbol Rating Unit
LED Forward Current
LED Reverse Voltage
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
I
F
V
R
V
DD
V
IN
T
op
T
stg
400 mA
4V
7.0 V
V
V
IN
DD
0 to +50 °C
–20 to +60 °C
Electrical Characteristics (TA = 25°C)
Item Symbol Min. Typ. Max. Unit
LCD Operating
Voltage
Supply Voltage
Supply Current
Input Voltage
Outpit Voltage
T = 0°C
T = 25°C
T = 50°C
Hi Level
Low Level
Hi Level
Low Level
V
DD
V
DD
I
DD
V
V
V
V
– 4.8 –
-V
– 4.5 –
O
– 4.2 –
-V
4.7 5 5.3 V
SS
– 3.2 6 mA
2.2 – – V
IH
0–
IL
2.4 – 0.6 V
OH
– – 0.4 V
OL
V
V
DD
V
Optical Characteristics (TA = 25˚C, φ = 0°, θ = 0°)
Item Symbol Min. Typ. Max. Unit
Viewing Angle φ
– 50 – degree
Contrast K – 6.0 – –
Turn On
Turn Off
T
on
T
off
– 200 400 ms
– 250 400 ms
V
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.
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Tel: 408.523.8200 • Fax: 408.733.1287 • sales@purdyelectronics.com • www.purdyelectronics.com
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
7/20/07
AND731GST/GST-LED
Intelligent Character Display
Connector Pin Assignment
Pin No. Signal Function
1
2
3
4RS
V
V
SS
DD
V
O
Ground
+5 Power Supply
LCD Drive Voltage
“H” Data Input
“L” Command Input
5 R/W Read/Write
6 E Enable
7 DBO Data Bit 0
8 DB1 Data Bit 1
9 DB2 Data Bit 2
10 DB3 Data Bit 3
11 DB4 Data Bit 4
12 DB5 Data Bit 5
Block Diagram
Connector Pin Assignment (Continued)
Pin No. Signal Function
13 DB6 Data Bit 6
14 DB7 Data Bit 7
15 A LED Power
16 K LED Power
Power Supply
The LCD panel is driven by the voltage V
an adjustable V
for contrast and temperature control.
O
Temperature Variations
Temperature
0°C 5.00
+25°C 4.75
+50°C 4.50
DD
–V
, so you need
O
V
–V
DD
O
Dimensional Outline
7/20/07
Tel: 408.523.8200 • Fax: 408.733.1287 • sales@purdyelectronics.com • www.purdyelectronics.com
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
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