SC08-21EWA

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SC08-21EWA is a four-digit 7-segment LED display module. It is used in numerical displays and is a very useful tool in a variety of applications.

This module is available in two different colors: red and white. The red version has an operating voltage of 2.3V to 3.3V and a typical current of 20mA. The white version has an operating voltage of 2.8V to 5.5V and a typical current of 5mA. Both versions have different colors, and the brightness can be adjusted with a PWM signal.

The display consists of four 7-segment digits that can display numbers from 0 to 9, and symbols like D, H, E, and F. The module also has two common terminals (A and K) and eight segment terminals (A-G). Each segment can be controlled independently using a shift register.

Whether used in a traffic monitoring system, consumer electronics product, medical instrument, a calculator or an industrial controller, the SC08-21EWA provides a high-quality, low-cost numerical display solution. It also offers optional on-board power and a Dimming Control function that helps to reduce the display brightness to a desired level.

The most important feature of SC08-21EWA is its working principle. The module works on the three-echelon shift register driving principle. The first echelon comprises two cascaded transistor-transistor logic (TTL) shift registers. The second echelon consists of two TTL-connecting latch registers and operates with a high frequency. The third echelon comprises two 256-stage D/A converters that convert the shift register outputs into an analog signal for driving the LED display.

In addition to the three-echelon shift register driving principle, the SC08-21EWA also uses another driving circuit called the Ballast Multi-drive. In this circuit, the four 7-segment digits are driven separately by each segment and a separate ballast capacitor. The Ballast Multi-drive circuitry can achieve wider viewing angles and superior brightness levels over the standard three-echelon driving circuit.

The SC08-21EWA is an excellent option for displaying numerical information in a variety of applications. Its reliable and precise working principle, impressive dimming range and flexible design make it an ideal choice for any design engineer. Whether used in a consumer electronics product, medical instrument, a calculator or an industrial controller, the SC08-21EWA can offer a world-class numerical display solution.

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