20x4 1U Character LCD Display

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The LK204-7T is a 5.25” PC Bay Insert 1U with a 20x4 Intelligent LCD display designed to fit into 1U form factors. Engineered to quickly and easily add an elegant graphic HMI to any application. Multiple communication protocols such as Serial RS232, TTL, I2C, and USB communication models allow the LK204-7T Graphic LCD to be connected to a wide variety of host controllers.

Our Character LCD provides you with a cost-effective industrial HMI user interface solution for that great product/project you are developing. This LCD displays features optional on-board large and medium digits all with the convenience of a 7 key backlit tactile keypad will allow fast development for any application.

20x4 1U Character LCD Display HMI
Available Interfaces: Serial RS232, TTL, I2C, and USB
Two available voltage options: 5V, and 3.3V low voltage
7 key backlit tactile keypad
3 dual colour indication status LEDs
Software controlled contrast and brightness with configurable time-out setting up to 90 minutes
Built in Horizontal or Vertical bar graphs
Extended temperature available for extreme environments of -20C to 70C
Fast and easy development
Custom headers and Semi-custom designs
Designed, supported and Made in CANADA
Long life cycle
Backed by Matrix Orbital's decades of research and development

Module
Family/Series	Intelligent Display
Module Width (mm)	142
Module Height (mm)	38
Screen
Display Type	Character LCD
Backlight Type	LED
Viewing Area Width (mm)	82
Viewing Area Height (mm)	36
Active Area Width (mm)	77
Active Area Height (mm)	23.6
Resolution Width (Pixels)	100
Resolution Height (Pixels)	32
Pixel Pitch Width (mm)	0.65
Pixel Pitch Height (mm)	0.65
Pixel Width (mm)	0.6
Pixel Height (mm)	0.6
Character Columns	20
Character Rows	4
Character Pitch Width (mm)	3.9
Character Pitch Height (mm)	6.15
Character Width (mm)	3.2
Character Height (mm)	5.15
Font	Japanese
Viewing Direction	Top
Viewing Angle	60
HMI
Touchscreen	None
Keypad	7
Haptic Feedback	None
Audio Feedback	None
GPO's	3
Advanced GPO's	None
DOW	Optional, 1
Integrated LED's	3
Electrical
Interface	RS232, TTL, I2C, USB
Command Protocol	Matrix Orbital
Controller	ATMega164P
Negative Voltage	Integrated
Backlight Driver	Integrated
Minimum Voltage (Vdc)	3.3
Typical Voltage (Vdc)	3.3, 5
Maximum Voltage (Vdc)	5
Header	Standard
Environmental
Min. Operating Temp. (°C)	0, -20
Max. Operating Temp. (°C)	50, 70
Min. Storage Temp. (°C)	-30, -10
Max. Storage Temp. (°C)	60, 80

Documents
	File Name	Revision	Size
	File Name	Revision	Size
LK204-7T-1U	3D Drawing for LK204-7T-1U Revision 3.0	3.0	6.79MiB	Description Solidworks .step style 3D Drawing for LK204-7T-1U PCB Revision 3.0.
LK204-7T-1U	PCN 2022-08-09-02		208.92KiB	Description PCB R1.0.1 Release
LK204-7T-1U	AutoCAD Drawing for PCB revision 1.0	1.0	349.34KiB	Description AutoCAD Drawing for PCB Revision 1.0
LK204-7T-1U	PCN 2011-10-11-01		95.5KiB	Description Display Modules I2C Update
LK204-7T-1U	Manual for LK204-7T PCB Revision 1.0	1.0	2.09MiB	Description Manual for PCB Revision 1.0
LK204-7T-1U	PCN 2016-01-21-01		223.77KiB	Description Firmware v6.3 Release

Downloads
	File Name	Revision	Size
	File Name	Revision	Size
Alphanumeric Software	DisplayTunerPro v1.0.0.0 Software	1.0.0.0	802.25KiB	Description Display Tuner Pro (MOCD#) is an update to our popular uProject testing software for Matrix Orbital displays. It adds support for new features and displays, including legacy and graphic units, to our established base of features and scripting. This tool supports all Matrix Orbital Intelligent and Economy Series displays, including the following: GLK Series (GLK12232-25-SM, GLK12232-25, GLK19264-7T-1U, GLK24064-25, GLK24064R-25-1U, GLK240128-25) GLT Series (GLT12232-SM, GLT24064R-1U, GLT24064, GLT240128) GOK Series (GOK12232A-25-SM, GOK12832-25-SM) LCD/OLED/VFD Series (LCD0821, LCD2041, OLED0821, OLED2041, VFD2041) LK Series (LK162-12, LK162A-4T, LK162B-7T, LK202-25, LK204-25, LK204-7T-1U, LK402-25, LK404-25) MOI/MOS/MOU Series (MOS, MOU, XBoard-S, XBoard-U) OK Series (OK162-12, OK202-25, OK204-25) VK Series (VK162-12, VK202-25, VK204-25, VK246-25) And all Legacy Displays
Alphanumeric Software	Boot Edit		524.62KiB	Description Boot Edit is designed for modification of advanced features of the LK/VK/PK USB and MX series. This is a more advanced version of the Boot Logo software. Boot Edit allows the setting of these features: Custom startup screen using custom characters Power on GPO and FAN settings, such as speed, and frequency LCD Contrast, backlight brightness and VFD brightness Compatible Displays: LK/VK/PK202-25 LK/VK/PK202-24-USB LK/VK204-24-USB MOS-AL/AV/AP202 MOS-AL/AV204 All MX series Only the MX and USB series support the Edit GPO Defaults section. This application was written by Ray of LCD Studio. (Ray@lcdstudio.com)
Alphanumeric Software	Display Tuner		407KiB	Description This basic application allows you to test and set LCD Contrast, Brightness, VFD Brightness, set baudrate and send text to the display. Compatible Displays: All LK/VK/PK, MOS, MX and LCD/VFD series.
Alphanumeric Software	Custom Character Tool		451.61KiB	Description This simple program to give you hex values for custom characters. This program allows you to see the hex values per lines for custom characters making implication easier. Simply download the program, uncompress and run. You will require Microsoft .NET Framework Version 1.1, it can be downloaded from here. This application was written by Ray of LCD Studio. (Ray@lcdstudio.com) For technical discussions and questions, please visit our forums
Alphanumeric Software	Boot Logo		40.03KiB	Description Boot Logo is designed for modification of the startup screen for some alphanumeric displays with startup screens. The user has the ability to use the normal text from the display\'s font table, and the 8 custom characters. Compatible Displays: LK/VK/PK162-12 LK/VK/PK202-25 LK/VK/PK202-24-USB LK/VK204-24-USB MOS-AL/AV/AP202 MOS-AL/AV204 All MX series This application was written by Ray of LCD Studio. (Ray@lcdstudio.com)
Alphanumeric Software	uProject		1.42MiB	Description uProject is an advanced testing software for Matrix Orbital displays. It allows testing of nearly all the features and allows test scripting and many other advanced features. uProject (micro Project) is a series of different tools that should allow the testing of nearly all the features of most of our displays. uProject also features scripting abilities to speed up testing or changing of a specific feature, such as backlight brightness or contrast. All LK/VK/PK, MOS, MX and LCD/VFD series.

Application Notes
	File Name	Revision	Size
	File Name	Revision	Size
Application Notes	eGTT50-TPR Drawing (Rev 1.0).pdf		327.29KiB	Description TPN: non touch, TPR: resistive touch, TPC: capacitive touch
Application Notes	Arduino EVE UNO Example Code		-1B	Description Written for an EVE2 or EVE3 or EVE4 running on an Arduino UNO.
Application Notes	ESP32 EVE Example Code		-1B	Description Example code for the EVE on a ESP with the WEMOS D1 mini. Most models of the ESP32/ESP8266 should work, but are untested.