DS17887-3-IND

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DS17887-3-IND is a real-time clock (RTC) device developed by Maxim Integrated. It is optimized for applications requiring very low power consumption, high accuracy, and on-chip oscillators. This RTC is an extremely versatile and flexible solution, providing a number of features that can be programmed to best suit the application.

Features

The DS17887-3-IND has a number of features that make it an ideal low-power RTC solution for a variety of applications. It offers a wide operating temperature range, low power consumption, and reads with an accuracy of 1 PPM (+/-100 ppm over temperature). The on-chip oscillator can be tuned to a crystal with any frequency from 32.768kHz to 8MHz, allowing for flexibility when designing the system. The RTC also features a full RTC and calendar assist feature, allowing for expanded VBAT clock capabilities. Finally, the RTC supports up to 256 alarms and includes a watchdog timer.

Application Fields

The DS17887-3-IND is suitable for a wide range of applications, particularly in battery-operated systems. Its low power consumption and wide operating temperature range make it an attractive choice for portable devices and automotive applications. It is ideal for communications systems, such as mobile phones, that require accurate timing. It is also suitable for systems requiring accurate timekeeping, including medical and industrial applications, as well as scientific and military systems.

Working Principle

The DS17887-3-IND uses a built-in oscillator to count the seconds since the first use of the clock. This is done in the form of a simple binary counter. Every time the counter reaches the maximum number, the seconds count increases by one. This means that the time recorded is accurate to the second. The on-chip clock and calendar can be read and adjusted according to the desired time.

The RTC also includes a full RTC and calendar assist feature, which is capable of counting days and months. This is based on a 32-bit binary counter, which calculates the number of seconds and days since the beginning of the year. This counter is updated every 64 seconds, which helps avoid errors due to leap years and other discrepancies. The RTC also supports up to 256 alarms and a watchdog timer, providing a flexible solution for scheduling and triggering events based on time.

The DS17887-3-IND is a versatile, low-power and accurate real-time clock solution ideal for a variety of applications. Its features, combined with its low power consumption and wide operating temperature range, make it an attractive choice for engineers designing systems requiring precise timing.

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