AND491GST Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – Intelligent Character Display

Connector Pin Assignment
Pin No. Signal
1
V_SS 0V
2
V_DD 5V
3
V_O Contrast Adj.
4
RS Register Select
5
R/W Read/Write
6
E Enable
7
DBO Data Bit 0
8
DB1 Data Bit 1
9
DB2 Data Bit 2
10
DB3 Data Bit 3
11
DB4 Data Bit 4
12
DB5 Data Bit 5
13
DB6 Data Bit 6
14
DB7 Data Bit 7
15
A LED Power
16
K Led Power
Function
Block Diagram
AND491GST
Intelligent Character Display
Power Supply
The LCD panel is driven by the voltage V_DD–V_O, so you need
an adjustable V_O for contrast control and temperature
compensation.
Temperature Variations
Temperature
0°C
+25°C
+50°C
V_DD–V_O
4.80
4.50
4.20
Power Supply Block Diagram
V_DD
(+5V)
V_DD – V_O
V_O
VR
V_DD
GND
V_DD – V_O = LCD Drive Voltage
VR10 to 20 kΩ
Dimensional Outline
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
7/20/07
Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com
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