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AND471GST Datasheet, PDF (2/2 Pages) Purdy Electronics Corporation – Intelligent Character Display | |||
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AND471GST/GST-LED
Intelligent Character Display
Connector Pin Assignment
Pin No. Signal
Function
1
GND Ground
2
VDD +5 Power Supply
3
VO LCD Drive Voltage
4
RS
âHâ Data Input
âLâ Command Input
5
R/W Read/Write
6
E Enable
7
DBO
8
DB1
9
DB2
10
DB3 Data Bus
DB0-DB7 are for 8-bit operation
11
DB4 DB4-DB7 are for 4-bit operation
12
DB5
13
DB6
14
DB7
Block Diagram
Power Supply
The LCD panel is driven by the voltage VDDâVO, so you need
an adjustable VO for contrast control and temperature
compensation.
Temperature Variations
Temperature
0°C
+25°C
+50°C
VDDâVO
5.00
4.75
4.50
Power Supply Block Diagram
VDD
(+5V)
VDD â VO
VO
VR
VDD
GND
VDD â VO = LCD Drive Voltage
VR10 to 20 kâ¦
E
R/W
RS
DB0-DB7 8
VDD
VO
GND
16
Controller/
Driver
40
1
LCD
40
Driver
Dimensional Outline
Purdy Electronics Corporation ⢠720 Palomar Avenue ⢠Sunnyvale, CA 94085
7/20/07
Tel: 408.523.8200 ⢠Fax: 408.733.1287 ⢠sales@purdyelectronics.com ⢠www.purdyelectronics.com
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