LK202-24-USB-FY datasheet, PDF

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LK202-24-USB-FY: Descriptionlcd character display module 20x2 yellow text; CategoryLED optoelectronic/LED; File Size713KB，36 Pages; ManufacturerMatrix Orbital; Websitehttps://www.matrixorbital.com

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LK202-24-USB-FY Overview

lcd character display module 20x2 yellow text

LK202-24-USB-FY Parametric

Parameter Name	Attribute value
Maker	Matrix Orbital
Product Category	LCD character display module

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LK202-24-USB

User Manual

LK202-24-USB rev 1

Table of Contents

1. Introduction.............................................................................................................................. 4

1.1

1.2

1.3

1.4

1.5

1.6

What it Does ..................................................................................................................................... 4

What it Does Not Do ........................................................................................................................ 4

Keypad Interface............................................................................................................................... 4

Setup for Testing .............................................................................................................................. 4

Trying Out your LK202-24-USB...................................................................................................... 5

Trying out a Keypad ......................................................................................................................... 6

1.6.1 Here's what to do: ................................................................................................................... 6

1.7 Manual Override............................................................................................................................... 7

2. Connections............................................................................................................................. 9

2.1 Connector Pinout .............................................................................................................................. 9

2.1.1 Power...................................................................................................................................... 9

2.1.2 USB Communications .......................................................................................................... 10

2.2 General Purpose Outputs ................................................................................................................ 11

3. Displaying Text ...................................................................................................................... 13

3.1

3.2

3.3

3.4

General ........................................................................................................................................... 13

The Built-In Character Font............................................................................................................ 14

Writing Text to the Display ............................................................................................................ 14

Text Commands.............................................................................................................................. 15

4. Keypad Interface.................................................................................................................... 17

4.1

4.2

4.4

4.5

General ........................................................................................................................................... 17

Connections .................................................................................................................................... 17

USB Interface ................................................................................................................................. 18

Keypad Commands......................................................................................................................... 18

5. Bar Graphs and Special Characters .................................................................................... 20

5.1 Command List ................................................................................................................................ 20

6. Miscellaneous Commands ................................................................................................... 22

6.1 Command List ................................................................................................................................ 22

7. Appendix: Command Summary ........................................................................................... 26

7.1 General ........................................................................................................................................... 26

7.2 Issuing Commands.......................................................................................................................... 26

7.3 On Numbers.................................................................................................................................... 26

7.3.1 ASCII Characters.................................................................................................................. 27

7.4 Text Commands.............................................................................................................................. 27

7.5 Keypad Interface Commands.......................................................................................................... 28

7.6 Bar Graphs and Special Characters ................................................................................................ 29

7.7 Miscellaneous Commands .............................................................................................................. 30

8. Appendix: Specifications and Options................................................................................ 32

8.1 Specifications.................................................................................................................................. 32

LK202-24-USB rev 1

1. Introduction

Your LK202-24-USB has the following features:

20 column by 2 line text display

built-in font with provision for up to 8 user-defined characters

Speeds from 1200 bps to a lighting fast 19.2 Kbps over RS232

Communicate over USB

Use up to 100 modules on the same USB Host

Fully buffered so that no delays in transmission are ever necessary

Add your own Splash/Start-up screen

Use our "Remember" functions to save settings

Software controlled contrast

Software controlled backlight brightness

Backlight with configurable time-out setting up to 180 minutes

Use up to a 24 key keypad with a 10 key buffer.

Six general purpose outputs for a variety of applications

Horizontal or Vertical bar graphs

Power and data from one USB cable

Fits our PC Bay inserts without any modifications

1.1 What it Does

The LK202-24-USB is designed as the display unit for an associated controller. The controller may be

anything from a single board, special purpose microcontroller to a PC, depending on the application. This

controller is responsible for what you see on the screen of the LK202-24-USB.

The LK202-24-USB provides a simple command structure to allow text and bar graphs to be displayed on

the screen. Text fonts are built in, and use standard ASCII mapping. Provision is made for up to 8 user-

defined characters.

The screen is backlit for low-light situations. Backlighting may be turned on or off under program control.

Contrast is adjustable to compensate for differing lighting conditions and viewing angles.

General purpose outputs allow the controller to switch up to six electronic or electro-mechanical devices by

issuing commands to the display unit. These can be used for controlling LEDs, relays, etc.

1.2 What it Does Not Do

The LK202-24-USB does not include bitmap graphics capability, except that permitted by defining special

characters.

1.3 Keypad Interface

The keypad interface takes row/column input and converts it to ASCII characters, which are delivered out

the USB port to the associated controller. Note that the keypad is

not

used to directly control any aspect of

the operation of the LK202-24-USB, which acts simply as a matrix to serial converter. If you want to use

the keypad to control the LK202-24-USB display you must program your controller accordingly.

1.4 Setup for Testing

Before setting up your application you may want to try out the LK202-24-USB. This is easily done with a

PC. Here's what you'll need:

A available powered USB port

LK202-24-USB rev 1

LK202-24-USB-FY Related Products

	LK202-24-USB-FY	LK202-24-USB
Description	lcd character display module 20x2 yellow text	lcd character display module 20x2 black text
Maker	Matrix Orbital	Matrix Orbital
Product Category	LCD character display module	LCD character display module

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