AND721GST-LED [PURDY]
Optoelectronic Device;
| 型号： | AND721GST-LED |
| 厂家： | 
PURDY ELECTRONICS CORPORATION |
| 描述： | Optoelectronic Device |
| 文件： | 总2页 (文件大小：32K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
Item
Symbol
Rating
8
Unit
V
• AND721GST: Super Twist Technology
• AND721GST-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
VR
LED Reverse Voltage
LED Power Dissipation
Operating Temperature
Storage Temperature
PD
Top
Tstg
1900
mW
°C
0 to +50
–20 to +60
°C
• Wide temperature range option (WGST)
Dot Matrix Dimensions
Electrical Characteristics (TA = 25°C)
2.95
0.60
0.55
0.60
Item
Symbol Min.
Typ.
5.0
–
Max. Unit
VDD
4.75
3.0
5.25
V
Supply Voltage
VDD-VO
6.3
High Level In Voltage
(VDD = 5.0V)
VIN
VIH
VDD
0.6
–
0
–
–
V
V
Low Level In Voltage
(IOH = 0.2 mA)
High Level Output
Volt.
(–IOH = 0.2 mA)
VOH
2.4
–
–
V
Mechanical Characteristics
Item Specification
Outline
Low Level Output Volt.
(IOL = 1.2 mA)
VOL
VF
–
3.8
–
–
4.1
–
0.4
4.4
2.4
V
V
Unit
LED Forward Voltage
(IF = 230 mA)
98 (W) x 60 (H) x 12 (D)
mm
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. Max.
Unit
φ
K
–
–
–
50
6.0
200
–
–
degree
–
Absolute Maximum Ratings
Item
Supply Voltage
Input Voltage
Symbol
Rating
7.0
Unit
V
Ton
Turn On
400
ms
VDD
VIN
IF
Toff
Turn Off
–
250
400
ms
0 ≤ VIN ≤ VDD
V
LED Forward Current
480
mA
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94086
Tel:408.523.8200 • Fax:408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com
2-16
6/19/98
AND721GST/GST-LED
Intelligent Character Display
Connector Pin Assignment
Power Supply
Pin No. Signal
Function
The LCD panel is driven by the voltage VDD–VO, so an
adjustable VO is required for contrast control and
temperature compensation.
1
2
3
GND
VDD
Ground
+5 Power Supply
LCD Drive Voltage
“H” Data Input
Temperature Variations
VO
VDD–VO
5.00
Temperature
0°C
4
RS
“L” Command Input
+25°C
4.75
5
6
R/W
E
Read/Write
+50°C
4.50
Enable
7
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
Power Supply Block Diagram
8
(+5V)
VDD
9
Data Bus
DB0-DB7 are for 8-bit operation
DB4-DB7 are for 4-bit operation
10
11
12
13
14
VDD – VO
VO
VR
VDD
GND
VDD – VO = LCD Drive Voltage
VR10 to 20 kΩ
Block Diagram
E
4
R/W
Driver
40
RS
40
20
4
Controller/
DBO-DB7
8
Driver
16
16
VDD
VO
LCD
Driver
16
GND
40
40
20
4
Driver
Driver
Dimensional Outline
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94086
Tel:408.523.8200 • Fax:408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com
6/19/98
2-17
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