DS17887-5

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The DS17887-5 is a 3.0V Real Time Clock (RTC) designed by Dallas Semiconductor with a variety of applications. The device is a low-power, high-accuracy, real-time clock/calendar combined with a 10-year lithium concentration cell battery to make sure power will not be lost even if the power runs out. The main feature of this device is that the internal oscillator has the ability to compensate for temperature variations, providing the most accurate time day to day.

This device is mainly used in embedded systems for accurate time keeping, as well as system power-on time monitoring. The 10-year rechargeable battery backup allows system programs and data to be retained even after power fails or is disconnected. Additionally, the device can be used in a wide range of applications that require accurate time keeping, clocks and alarms, such as alarm systems, medical device timers, audio/video systems, etc.

The DS17887-5 provides a 64-bit clock/calendar counter, 128 bytes of system RAM, 16 bytes of general-purpose RAM, eight configurable I/O signals, Watchdog Timer, seven programmable interrupts, two Timer/Counters with interrupt capability, and battery backup control. The chip also has an adjustable 32.768 kHz oscillator which allows it to adjust to different conditions, making it more accurate regarding time keeping.

The DS17887-5’s operating voltage is 3.0V and is designed to be used in any environment. The device also has programmable alarms that can be configured to give an audible, visual or tactile feedback when the alarm is triggered, making it ideal for use in medical or industrial settings. It also has a Watchdog Timer which is used as a simple timer to reset the system if a certain set time passes without the presence of an “OK” signal.

The DS17887-5 has a variety of features that make it a great choice for real-time clock applications. With the internal oscillator, it is able to adjust to the environment and provide accurate timekeeping, making it ideal for use in applications that require accurate timekeeping. The 10-year battery backup allows programs and data to be retained even after power fails, making it a great choice for any application that needs to keep a log of what had happened. The seven programmable interrupts also make the device very versatile, as they can be used to trigger events, alarms, or operations in embedded systems. These features make the DS17887-5 an ideal choice for any real-time clock, alarm, or timer applications.

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