AND491GST-LED AND DISPLAYS, AND491GST-LED Datasheet - Page 2

• Manufacturer Part Number: AND491GST-LED
• Description: LCD Display Panel
• Manufacturer: AND DISPLAYS

Specifications of AND491GST-LED

• Peak Reflow Compatible (260 C): Yes
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7/20/07
Connector Pin Assignment
Block Diagram
Dimensional Outline
Pin No.
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Signal
DBO
V
R/W
DB1
DB2
DB3
DB4
DB5
DB6
DB7
V
RS
V
E
A
K
Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com
SS
DD
O
0V
5V
Contrast Adj.
Register Select
Read/Write
Enable
Data Bit 0
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
LED Power
Led Power
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Function
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
GND
O
V
V
DD
for contrast control and temperature
O
V
DD
V
VR10 to 20 kΩ
– V
DD
O
– V
O
VR
= LCD Drive Voltage
AND491GST
(+5V)
DD
–V
V
DD
4.80
4.50
4.20
O
–V
, so you need
O
V
DD
2