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Alphanumeric LCD Display Expansion Module
User Guide
www.numato.com
Rev 9
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1 Alphanumeric LCD Display Expansion Module – User Guide
Introduction
This expansion module features a 16x2 Alphanumeric LCD Module which can be added to your custom
project using a 2x6 pin connector. It is designed to be used with Numato Lab’s FPGA/Micro-controller
boards featuring 2x6 pin Expansion connectors. This module can be used with other boards as well by
using manual wiring.
Applications
• Product Prototype Development
• Development and testing of custom Projects
Board features
• 16x2 Alphanumeric LCD Display
• Display back light
• Trim-pot for contrast adjustment
• 2x6 pin expansion connector
• Dimension: 118mm X 45mm
©2015 NUMATO SYSTEMS PVT LTD
www.numato.com
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2 Alphanumeric LCD Display Expansion Module – User Guide
How to use the module
The following section describes how to use this module.
Components/Tools required
Along with the module, you may need the items in the list below for easy and fast installation.
1. Any FPGA board featuring a 2 × 6 pin Expansion connector (Manual wiring needed for boards
that does not have 2x6 expansion connector)
2. DC Power supply
Connection Diagram
This diagram should be used as a reference only. For detailed information, see the schematics at the
end of this document. Details of individual connectors are as below.
To use this module, directly attach the 2x6 expansion connector to the FPGA/Micro-controller
development board where corresponding female header is available. If 2x6 female header is not
available, manually make the connections as per the connection details below. External power is
required for the operation of this module due to the higher current requirement of the back light.
Connect a power supply to the VEXT connector. Make sure to connect positive and negative terminals
appropriately. Use the trim-pot on the module to adjust the contrast of LCD.
©2015 NUMATO SYSTEMS PVT LTD
www.numato.com
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3 Alphanumeric LCD Display Expansion Module – User Guide
Connection Details
Header P1
Header Pin No. Pin Details
1 RS
2 R/W
3 D0
4 E
5 D2
6 D1
7 -
8 D3
9 GND
10 GND
11 VCC3V3
12 VCC3V3
For more information, refer the schematics below.
©2015 NUMATO SYSTEMS PVT LTD
www.numato.com
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4 Alphanumeric LCD Display Expansion Module – User Guide
Technical Specifications
Parameter * Value Unit
Basic Specifications
Power supply voltage (External) 7 – 9 V
Max digital input voltage 3.3 V
* All parameters considered nominal. Numato Systems Pvt Ltd reserve the right to modify products without notice.
©2015 NUMATO SYSTEMS PVT LTD
www.numato.com
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5 Alphanumeric LCD Display Expansion Module – User Guide
Physical Dimensions
Schematics
See next page
©2015 NUMATO SYSTEMS PVT LTD
www.numato.com
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1
2
3
4
5
A A
7805
VCC5V0
1
2
3
4
5
6
7
VSS
VDD
VO
RS
R/W
E
DBO
DB18DB2
3
VCCIN
B B
GND
C1
100mfd
VI
VO
GND
U1
100mfd
VCC5V0
C3
C2
0.1uF
GND
VCC5V0
VEE
LCD_RS
R/W
LCD_EN
A/Ve
DB7
DB6
DB5
DB4
DB3
RV1
POT
16
K
GND
15
VCC3V3
14
LCD-D3
13
LCD-D2
12
LCD-D1
11
LCD-D0
10
9
U2
1
GND
2
VEE
LCD_RS
LCD-D0
GND
VCC3V3
EXT VIN
1
VCCIN
GND
P2
2
C C
License: CC BY-SA
http://www.numato.com
Numato Lab
File: LCDExpasionModule.sch
Sheet: /
Title: LCD Expansion Module
1
2
3
KiCad E.D.A.
1 2
3 4
5 6
P1
7 8
9 10
11 12
Date: 8 apr 2014
R/W
LCD_EN
LCD-D1LCD-D2
LCD-D3
GND
VCC3V3
PWR_FLAG
Rev: Size: A4
4
Id: 1/1
5
EXPANSION CONNECTOR16 X 2 CHARACTER LCD
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