Displays
AND501WGST/WGST-LED
20 Characters x 2 Lines
Intelligent Alphanumeric Displays
The AND501WGST/WGST-LED devices are compact, LCD
modules that have an on-board LCD controller and driver
circuit and wide operating temperature STN fluid. These
devices can display 160 characters (numerals, letters,
symbols and Kana letters).
Features
•
•
•
•
•
•
• RoHS Compliant
AND501WGST: Wide Temp. Super Twist Technology
AND501WGST-LED: WTSTN with LED backlight
Low voltage, +5V power supply
Controller on board (HD44780)
RoHS compliant
11 commands for control
Absolute Maximum Ratings (Continued)
Item
Operating Temperature
Storage Temperature
Symbol
T
op
T
stg
Rating
-20 to +70
–30 to +80
Unit
°C
°C
Electrical Characteristics (TA — 25°C)
Item
Supply Voltage
High Level In Voltage
(V
DD
= 5.0V)
Low Level In Voltage
(I
OH
= 0.2 mA)
High Level Output Volt.
(–I
OH
= 0.2 mA)
Low Level Output Volt.
(I
OL
= 1.2 mA)
Symbol
V
DD
GND
V
IH
V
IL
V
OH
V
OL
V
F
I
R
Min.
4.75
—
2.2
0
2.4
—
3.8
—
Typ.
5.0
0
—
—
—
—
4.1
—
Max.
5.25
—
—
0.6
—
0.6
4.4
2.2
Unit
V
V
V
V
V
V
mA
Dot Matrix Dimensions
Mechanical Characteristics
Item
Outline
Dimensions
Character Size
Viewing Area
Dot Size
Dot Pitch
Specification
116 (W) x 37 (H) x 11 (D)
3.2 (W) x 5.55 (H)
83.0 (W) x 18.6 (H)
0.60 (W) x 0.65 (H)
0.65 (W) x 0.70 (H)
Unit
mm
mm
mm
mm
mm
LED Forward Voltage
(I
F
= 200 mA)
LED Reverse Current
(V
R
= 8 V)
Optical Characteristics (TA = 25˚C,
φ
= 0˚C,
θ
= 0)
Item
Viewing Angle
Contrast
Turn On
Symbol
φ
K
T
on
T
off
Min.
–10
—
—
—
Typ.
25
3.0
200
250
Max.
40
—
400
400
Unit
degree
—
ms
ms
Absolute Maximum Ratings
Item
Supply Voltage
Input Voltage
LED Forward Current
LED Reverse Voltage
LED Power Dissipation
Symbol
V
DD
V
IN
I
F
V
R
P
D
Rating
7.0
0
≤
V
IN
≤
V
DD
275
8
1270
Unit
V
V
mA
V
mW
Turn Off
Connector Pin Assignment
Pin No.
1
2
3
Signal
GND
V
DD
V
O
Ground
+5 Power Supply
LCD Drive Voltage
Function
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.
7/20/07
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408.523.8200 • Fax: 408.733.1287 •
sales@purdyelectronics.com
• www.ANDdisplays.com
1
Displays
Connector Pin Assignment (Continued)
Pin No.
4
5
6
7
8
9
10
11
12
13
14
Signal
RS
R/W
E
DBO
DB1
DB2
DB3
DB4
DB5
DB6
DB7
Data Bus
DB0-DB7 are for 8-bit operation
DB4-DB7 are for 4-bit operation
“H” Data Input
“L” Command Input
Read/Write
Enable
Function
AND501WGST/WGST-LED
Intelligent Alphanumeric Displays
Power Supply
The LCD panel is driven by the voltage V
DD
–V
O
, so adjustable
V
O
is required for contrast control and temperature
compensation.
Temperature Variations
Temperature
-20°C
+25°C
+70°C
Power Supply Block Diagram
V
DD
V
DD
– V
O
V
O
VR
V
DD
(+5V)
V
DD
–V
EE
6.20
5.60
5.20
GND
V
DD
– V
O
= LCD Drive Voltage
VR10 to 20 kΩ
Block Diagram
E
R/W
RS
DB0-DB7
V
DD
V
O
GND
40
20
40
8
Controller/
Driver
16
LCD
8
8
Dimensional Outline
7/20/07
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408.523.8200 • Fax: 408.733.1287 •
sales@purdyelectronics.com
• www.ANDdisplays.com
2
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