AND721GST/GST-LED
Intelligent Character Display
AND721GST/GST-LED
4 Lines x 20 Characters
Intelligent Character Display
The AND721GST/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.
Absolute Maximum Ratings (Continued)
Features
• AND721GST: Super Twist Technology
• RoHS Compliant
Item
Symbol
Rating
8
Unit
V
VR
LED Reverse Voltage
LED Power Dissipation
• AND721GST-LED: STN with LED backlight
• Low voltage, +5V single power supply
• Controller on board (HD44780)
• RoHS compliant
PD
Top
Tstg
1900
mW
Operating Tempera-
ture
0 to +50
°C
°C
• 11 commands for control
• Wide temperature range option (WGST)
Storage Temperature
-20 to +60
Dot Matrix Dimensions
Electrical Characteristics (TA = 25°C)
Symbo
2.95
0.60
0.55
0.60
Item
Min.
Typ.
Max. Unit
l
VDD
4.75
3.0
5.0
–
5.25
V
Supply Voltage
VDD-VO
6.3
High Level In Voltage
(VDD = 5.0V)
VIN
VDD
0.6
–
–
0
–
–
V
V
Low Level In Voltage
(IOH = 0.2 mA)
VIH
VOH
VOL
VF
High Level Output Volt.
(–IOH = 0.2 mA)
2.4
–
–
V
Mechanical Characteristics
Low Level Output Volt.
(IOL = 1.2 mA)
–
0.4
4.4
2.4
V
Item
Specification
Unit
Outline
LED Forward Voltage
(IF = 230 mA)
98 (W) x 60 (H) x 12 (D)
mm
3.8
–
4.1
–
V
Dimensions
Character Size
Viewing Area
Dot Size
2.95 (W) x 4.75 (H)
76.0 (W) x 25.2 (H)
0.55 (W) x 0.55 (H)
0.60 (W) x 0.60 (H)
mm
mm
mm
mm
LED Reverse Current
(VR = 8 V)
IR
mA
Optical Characteristics (TA 5 = 25˚C, φ = 0°, θ = 0°)
Dot Pitch
Item
Viewing Angle
Contrast
Symbol
Min.
Typ.
50
6.0
Max.
–
–
Unit
degree
–
Absolute Maximum Ratings
f
K
Ton
–
–
–
Item
Symbol
Rating
7.0
Unit
V
Turn On
200
400
ms
VDD
VIN
IF
Supply Voltage
Input Voltage
Toff
Turn Off
–
250
400
ms
0 ≤ VIN ≤ VDD
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.
LED Forward Current
480
mA
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel:408.523.8200 • Fax:408.733.1287 • sales@purdyelectronics.com • www.purdyelectronics.com
1
7-27-99