SA15-11EWA

Introduction

In the display module field, LED character and numeric display modules are very popular. Among them is the SA15-11EWA display module. This article will discuss its application field and working principle.

Application Field

SA15-11EWA display module is mainly used in industrial fields. It is mainly used to display text information, such as temperature, speed, levels, etc. It is a reliable and economical solution for monitoring and control systems, as it is easy to install and maintain. It is also widely used in advertising and automotive fields, such as speed display, mileage display, and other informations.

Working Principle

The SA15-11EWA display module is composed of an integrated circuit board with a backlight, an LCD display and an external power supply. It uses the SPI serial communication protocol to communicate with the host. It can display text, numbers and punctuation marks in 4 different font sizes. The display content is controlled by the main control unit. The main control unit receives signals and processes them, then it sends the corresponding driving signals to control the display module.

The circuit board is composed of an integrated circuit board, transistors, capacitors, resistors and other components. The integrated circuit board contains the microcontroller, memory chips, input/output ports, etc. The microcontroller is the brains of the circuit board, it receives the serial data from the host and processes it, then it sends the corresponding driving signals to the display module.

The LCD display is composed of a display panel and a backlight. The backlight is necessary for the display module to work in dark environments. When the backlight is not needed, the display is still readable because it can be backlit. The LCD display can display both text and numbers in 4 different font sizes. The text and numbers can be easily changed by programming.

The external power supply is used to supply power to the circuit board and the LCD display. It is usually in the form of a 9V battery, or it can be connected to an external power source. Power consumption is low, and the power supply is protected from overvoltage and short circuit.

Conclusion

SA15-11EWA display module is a reliable and economical solution for industrial, automotive, and advertising applications. It uses SPI serial communication protocol to communicate with the host. It is composed of an integrated circuit board, an LCD display and an external power supply. The external power supply is used to supply power to the circuit board and the LCD display. The LCD display can display both text and numbers in 4 different font sizes. This article has discussed the application field and working principle of SA15-11EWA display module.