EA T204B-BNLW

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EA T204B-BNLW application field and working principle

EA T204B-BNLW is a type of character and numeric display module, a member of the larger family of LCD, OLED Character and Numeric displays. This module is a 4x20 character backlight LCD display, having dimensions of 97.50mm by 39.25mm. It displays up to 4 lines of 20 characters each. This makes it well-suited for displaying large amounts of information in an unambiguous and readily-understandable way.

Applicability

The EA T204B-BNLW is particularly useful in applications that require the displaying of tables, lists, menus, and various types of data. These type of displays can be used in a variety of day-to-day devices, such as industrial instrumentation, computing peripherals, vending machines, medical devices, consumer electronic items, and telecommunications infrastructure. It is most commonly used in consumer electronic applications, because of the relatively low price, ease of use, and reliable performance.

Features

The EA T204B-BNLW has several features that make it a suitable choice for many types of applications. Its 4x20 character LCD display provides excellent readability. It has a black background with white text and an adjustable LED backlight for optimal visibility under any lighting condition. The LED backlight can be easily adjusted with a few simple commands and the display can be dimmed or brightened accordingly. It is also equipped with a built-in microcontroller (MCU) and real-time clock (RTC) to ensure accurate and precision timekeeping.

The EA T204B-BNLW also has a low power design, allowing it to be used in energy-efficient applications. It has a low idle-mode power consumption, making it suitable for battery-powered applications. It also has an exceptionally fast refresh rate of up to 5ms, making it suitable for displaying fast-changing data. In addition, the display has a wide operational temperature range of -20 to +70°C.

Interface and Compatibility

The EA T204B-BNLW features 12 parallel data lines and 7 control lines. It comes with a variety of optional connection types, including a flat cable connector and soldered headers, allowing it to be easily integrated into existing systems. The display also has a wide range of microcontroller compatibility, being compatible with Atmel, Avago, FTDI, Microchip, ST Microelectronics, and many other MCUs.

Working Principle

The EA T204B-BNLW display works on the principle of placing a thin-film transistor (TFT) matrix on a glass substrate, with each pixel in the matrix representing one color or shades of grey. An electrical signal is sent to each pixel through the transistor. This causes the transistors to switch between open and closed in order to create the desired image on the screen. The process of displaying text or images is known as \'writing\' or \'writing to the display memory\'.

The EA T204B-BNLW also includes a built-in RTC, which keeps track of time and is responsible for providing the updated time for the display. In terms of writing to the display memory, the MCU sends data to the display over a serial or parallel interface. Once the data is written, the LCD module begins to display the text or images in the memory.

Conclusion

The EA T204B-BNLW is a reliable and low-cost display module, suitable for a wide variety of applications. It provides a 4x20 character LCD display, LED backlight with adjustable brightness, low power consumption, and fast refresh rate making it the ideal choice for industrial, computing, and consumer electronic applications. In addition, it has a wide range of microcontroller compatibility, providing the user with maximum flexibility in terms of integration. Overall, the EA T204B-BNLWLCD module is a great choice for anyone looking for a reliable, flexible, and cost-effective display module.

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