DS1239S-10+

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PMIC - Supervisors refers to a category of integrated circuits that provide system wide monitoring, alarming, and control of power related functions within a given system. The DS1239S-10+ is an example of such a device, used to provide precision timing in demanding applications. This article will discuss the application field and working principle of the DS1239S-10+.

Application Field

The DS1239S-10+ is a precision real-time clock (RTC) used in a wide range of advanced digital applications. Its wide range of features corrects drift and provides date, time and frequency accuracy, making it ideal for advanced ranges of applications such as: Industrial Automation, Automotive Applications, Telecommunications, Medical Devices, Office Automation Systems, Security and Surveillance Systems, Avionics, and more.

Working Principle

The DS1239S-10+ includes a wide range of features, resulting in improved battery power economy, low spiking at battery connection, more accurate timing accuracy over longer periods and illuminated LED for manual setting. The main function of Real Time Clock (RTC) is to maintain time even during power outages, by relying on an integrated watch crystal oscillator. The watch crystal oscillator creates an oscillation of very stable frequency that maintains the elapsed time. First, when power is applied, the DS1239S-10+ receives information from its integrated watch crystal oscillator and automatically sets the time, date and frequency. Secondly, the time register keeps track of the content of time and date registers and will increment every second, minute and hour respectively when the system is powered. The clock is typically configured to run at 24-hour format, and the date register will increment every day. Its reference oscillator is designed to compensate for temperature drift and temperature variations, thus adding an additional layer of accuracy. The RTC is protected from ground loops and ESD, and incorporates security features to resist tampering and provide a higher level of protection from power fluctuations. In addition, the DS1239S-10+ is a very low-power device, thus making it power-efficient for most applications.

Conclusion

The DS1239S-10+ Real Time Clock has been designed for a wide range of applications and provides high accuracy, low spiking at battery connection, security from tampering, and power efficiency. It is an integrated circuit perfect for high precision timing, drift correction, date and time accuracy, and robust system performance.

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