DS1747-70+

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The DS1747-70+ is an important member of Maxim Integrated’s versatile family of real time clocks (RTCs). It is an integrated circuit that provides a non-volatile memory for time and calendar information, making it useful for applications requiring time and date tracking and accurate timekeeping. This article will focus on the application field and working principle of the DS1747-70+.

Application Field

The DS1747-70+ employs a serial interface and is designed as a device supporting a wide variety of communication systems. It can be used in a wide range of applications, including embedded system designs that require low power, reliable and flexible clock operation. The primary application of the RTCs is in industrial, consumer, aerospace and medical systems that require accurate time and date tracking. This RTC can also be used in automotive applications such as infotainment systems.

In consumer electronics, office automation and home automation systems, the DS1747-70+ is used to provide reliable time for setting alarms and executing scheduled operations. It can also be used in networking and telecommunications applications to keep track of system time. In medical applications, the RTC is used to keep track of patient information and medical procedures by recording time data with high accuracy.

Working Principle

The DS1747-70+ utilizes a serial interface to communicate with the microcontroller, and its time is read and set by the microcontroller. It functions by continually counting the number of pulses that it receives from an external quartz oscillator. This RTC is designed to work with a wide range of quartz oscillators, but it is primarily designed to work with a 32.768 kHz crystal oscillator. The oscillator generates 32,768 pulses every second which the RTC registers, thus providing accurate time keeping.

The time and calendar data are stored in non-volatile memory and can be easily read from or written to. The non-volatile memory is implemented by a hafnium dioxide memory cell, allowing for reliable time keeping even in the event of a power outage. The RTC supports multiple time and date formats, including year, month, date, hour, minute, second, day of the week and century. The RTC also provides status registers and alarms that can be used to set alarms and to detect events such as an oscillator failure.

The DS1747-70+ is a low power, low cost real time clock that provides an accurate, reliable, and flexible time tracking solution. The serial interface is compatible with a wide range of microcontrollers, making it an ideal solution for a variety of applications. The built in non-volatile memory ensures that the time and date information will be maintained when the system is powered down, making it a reliable choice for time and date tracking in a wide range of applications.

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