AND491GST AND / Purdy Electronics, AND491GST Datasheet - Page 2

• Manufacturer Part Number: AND491GST
• Description: Display, LCD; 80 mm H x 36 mm W x 11 mm D; 5 V (Typ.)
• Manufacturer: AND / Purdy Electronics

Specifications of AND491GST

• Operating Temperature, Maximum: 50
• Overall Size: 80 mm H x 36 mm W x 11 mm D
• Supply Voltage, Logic: 5 V (Typ.)
• Viewing Area: 64.5 mm H x 13.8 mm W
• Lead Free Status / Rohs Status: RoHS Compliant part

4/2/05
Connector Pin Assignment
Block Diagram
Dimensional Outline
Pin No.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Signal
GND
DBO
V
R/W
DB1
DB2
DB3
DB4
DB5
DB6
DB7
RS
V
E
Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com
DD
O
Ground
+5 Power Supply
LCD Drive Voltage
“H” Data Input
“L” Command Input
Read/Write
Enable
Data Bus
DB0-DB7 are for 8-bit operation
DB4-DB7 are for 4-bit operation
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
DB0-DB7
GND
R/W
V
RS
V
DD
E
O
Function
8
Controller/
Driver
40
16
1
Power Supply
The LCD panel is driven by the voltage V
an adjustable V
compensation.
Temperature Variations
Power Supply Block Diagram
Temperature
Intelligent Character Display
+25°C
+50°C
0°C
LCD
GND
O
V
V
DD
for contrast control and temperature
O
Driver
AND491GST/GST-LED
40
V
DD
V
VR10 to 20 kΩ
– V
DD
O
– V
O
VR
= LCD Drive Voltage
(+5V)
DD
–V
V
DD
4.80
4.50
4.20
O
–V
, so you need
O
V
DD
2