Matrix Orbital LK404-25 - Manual (Page 5)

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1 Introduction
Figure 1: LK404-25 Display
The LK404-25 is an intelligent alphanumeric liquid crystal display designed to decrease development
time by providing an instant solution to any project. RS232, TTL, and I2C protocols allow the LK404-25
to be connected to a wide variety of host controllers. Communication speeds of up to 115.2kbps for
serial protocols and 100kbps for I
2 C ensure lightning fast display updates.
The simple command structure permits easy software control of many settings including backlight
brightness, screen contrast, and baud rate. On board memory provides up to forty custom characters
which can be saved within the unit and recalled for start screens, bar graphs or larger numbers.
User input on the LK404-25 is available through a five by five matrix style keypad, and six general
purpose outputs provide simple switchable five volt sources. In addition, the option of a Dallas One-
Wire header provides a communication interface for up to thirty-two devices.
The versatile LK404-25, with all the features mentioned above, is available in a variety of colour, voltage,
and temperature options to suit almost any application.