Purdy AND771GST Intelligent character display Datasheet

AND771GST/GST-LED
2 Lines x 24 Characters
Intelligent Character Display
The AND771GST/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
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Absolute Maximum Ratings (Cont)
Item
AND771GST: Super Twist Technology
AND771GST-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
3.20
0.60
0.05
Unit
LED Forward Current
280
mA
LED Reverse Voltage
VR
4
V
LED Power Dissipation
PD
1150
mW
Operating Temperature
Top
0 to +50
°C
Storage Temperature
Tstg
–20 to +60
°C
Item
Symbol
Min.
Typ.
Max.
VDD
4.75
5.0
5.25
VDD -VO
3.0
–
6.3
High Level In Voltage
(VDD = 5.0V)
VIH
2.2
–
–
Low Level In Voltage
(IOH = 0.2 mA)
VIL
0
–
0.6
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 = 160 mA)
VF
3.8
4.1
4.4
V
LED Reverse Current
(VR = 4 V)
IR
–
–
100
µA
0.40
5.55
0.65
0.05
Supply Voltage
Specification
Unit
118 (W) x 36 (H) x 11 (D)
mm
Character Size
3.20 (W) x 5.55 (H)
mm
Viewing Area
93.5 (W) x 15.8 (H)
mm
Bezel Opening
93.5 (W) x 15.8 (H)
mm
Dot Size
0.60 (W) x 0.60 (H)
mm
Dot Pitch
0.65 (W) x 0.65 (H)
mm
Outline
Dimensions
Rating
IF
Electrical Characteristics (TA = 25°C)
0.50
Mechanical Characteristics
Item
Symbol
Absolute Maximum Ratings
Unit
V
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
–
–
Symbol
Rating
Unit
Turn On
Ton
–
200
400
ms
Supply Voltage
VDD
7.0
V
Turn Off
Toff
–
250
400
ms
Input Voltage
VIN
0 ≤ VIN ≤ VDD
V
Item
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.
1
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com
7/23/07
2
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com
7/23/07
AND771GST/GST-LED
Intelligent Character Display
Power Supply
Connector Pin Assignment
Pin No.
Signal
1
GND
Ground
2
VDD
+5 Power Supply
3
VO
LCD Drive Voltage
4
RS
“H” Data Input
“L” Command Input
5
R/W
6
E
7
DBO
8
DB1
9
DB2
Function
LCD panel is driven by the voltage VDD –VO, so adjustable VO
is required for contrast control and temperature
compensation.
Temperature Variations
Temperature
V DD –VO
0°C
5.00
Read/Write
+25°C
4.75
Enable
+50°C
4.50
Power Supply Block Diagram
10
DB3
11
DB4
12
DB5
13
DB6
14
DB7
15
NC
No Connection
16
NC
No Connection
(+5V)
VDD
Data Bus
DB0-DB7 are for 8-bit operation
DB4-DB7 are for 4-bit operation
VDD – VO
VO
VR
VDD
GND
VDD – VO = LCD Drive Voltage
VR10 to 20 kΩ
Block Diagram
E
16
R/W
RS
DB0-DB7
VDD
VO
GND
8
LCD
Controller/
Driver
40
2
40
40
Driver
Driver
Dimensional Outline
3
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com
7/23/07
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