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Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94086
2-10
Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com
9/8/98
AND491GST/GST-LED
2 lines x 16 Characters
Intelligent Character Display
The AND491GST/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
• AND491GST: Super Twist Technology
• AND491GST-LED: STN with LED backlight
• Low voltage, +5V single power supply
• Controller on board (HD44780)
• Direct interface to 4- or 8-bit CPU
• 11 commands for control
• Wide temperature range option (WGST)
Dot Matrix Dimensions
Mechanical Characteristics
Item
Specification
Unit
Outline
Dimensions
80 (W) x 36 (H) x 11 (D)
mm
Character size
2.95 (W) x 4.35 (H)
mm
Viewing Area
64.5 (W) x 13.8 (H)
mm
Bezel Opening
64.5 (W) x 13.8 (H)
mm
Dot Size
0.55 (W) x 0.50 (H)
mm
Dot Pitch
0.60 (W) x 0.55 (H)
mm
0.55
0.60
0.70
2.95
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply Voltage
VDD
7.0
V
Input Voltage
VIN
0
≤ V
IN ≤ VDD
V
Operating Temperature
Top
0 to +50
°C
Storage Temperature
Tstg
–20 to +60
˚C
Electrical Characteristics (TA = 25°C)
Item
Symbol
Min.
Typ.
Max.
Unit
Supply Voltage
VDD-VO
4.75
5.0
5.25
V
GND
3.0
0
6.3
High Level In Voltage
(VDD = 5.0V)
VIH
2.2
–
–
V
Low Level In Voltage
(IOH = 0.2 mA)
VIL
–
–
0.6
V
High Level Output
Volt.
(–IOH = 0.2 mA)
VOH
2.4
–
–
V
Low Level Output Volt.
(IOL = 1.2 mA)
VOL
–
–
0.4
V
LED Forward Voltage
(IF = 150 mA)
VF
3.8
4.1
4.4
V
LED Reverse Current
(VR = 4 V)
IR
–
–
100
µA
Optical Characteristics (TA 5 = 25˚C,
φ = 0°, θ = 0°)
Item
Symbol
Min.
Typ.
Max.
Unit
Viewing Angle
φ
–
50
–
degree
Contrast
K
–
6.0
–
–
Turn On
Ton
–
200
400
ms
Turn Off
Toff
–
250
400
ms
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