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AND491GST Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – Intelligent Character Display | |||
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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
AND491GST/GST-LED
Intelligent Character Display
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 94086
9/8/98
Tel: 408.523.8200 ⢠Fax: 408.733.1287 ⢠email@purdyelectronics.com ⢠www.purdyelectronics.com
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