AND481GST Datasheet, PDF (2/2 Pages) Purdy Electronics Corporation – Intelligent Character Display

Connector Pin Assignment
Pin
No.
Signal
Function
1
V_DD 5V
2
V_SS 0V
3
V_O Contrast Adj.
4
RS Register Select
5
R/W Read/Write
6
E Enable Signal
7
DB0 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
Block Diagram
AND481GST/GST-LED
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
V_DD–V_O
5.00
+25°C
4.75
+50°C
4.50
Power Supply Block Diagram
DB7-DB0
E
R/W
RS
V_O
V_DD
V_SS
Dimensional Outline
LCD
CONTROLLER
LSI
HD4478OU
or
Equivalent
COM 16
SEG 40
CONTROL SIGNAL 4
LCD PANEL
SEG 40
LCD SEGMENT DRIVER X 1
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
7/20/07
Tel: [phone] • Fax: [phone] • [e-mail] • www.ANDdisplays.com
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