Analog Devices Inc./Maxim Integrated

DS17287-3  

Real Time Clocks ICs

DS17287-3 Description

The DS17287-3 is a highly integrated Real-Time Clock (RTC) and Calendar IC designed by Analog Devices Inc./Maxim Integrated. This Through Hole mounted IC operates within a temperature range of 0°C to 70°C, making it suitable for a variety of applications that require reliable timekeeping in moderate environmental conditions. The DS17287-3 features a 2KB Non-Volatile Static Random Access Memory (NVSRAM) for data storage, ensuring data integrity even in the event of power loss.

The DS17287-3 operates on a supply voltage of 2.7V to 3.7V, with a maximum timekeeping current of 2mA, ensuring low power consumption and long battery life. It also supports a battery supply voltage range of 2.5V to 3.7V, providing flexibility in power source options. The IC is housed in a Tube package and is available in a 24-pin Parallel interface, facilitating easy integration into various electronic systems.

DS17287-3 Features

The DS17287-3 offers several advanced features that enhance its functionality and versatility:

• Alarm Functionality: The DS17287-3 includes an alarm feature that allows users to set specific times for alerts, making it ideal for applications requiring scheduled events or reminders.
• Daylight Savings and Leap Year Support: This IC automatically adjusts for daylight savings and leap years, ensuring accurate timekeeping over extended periods without manual intervention.
• Square Wave Output: The DS17287-3 provides a square wave output, which can be used for clocking other devices or generating timing signals.
• Time Format: The DS17287-3 supports both 12-hour and 24-hour time formats (HH:MM:SS), providing flexibility to meet different user preferences and application requirements.
• REACH Compliance: The DS17287-3 is REACH Unaffected, ensuring it meets stringent environmental and safety standards.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the DS17287-3 is suitable for use in environments with varying humidity levels without the need for special handling precautions.

DS17287-3 Applications

The DS17287-3 is well-suited for a range of applications where accurate timekeeping and reliable data storage are critical:

• Embedded Systems: Ideal for embedded systems that require precise timekeeping and data logging capabilities.
• Industrial Control: Suitable for industrial applications where reliable time synchronization and data retention are essential.
• Telecommunications: Can be used in telecom equipment for time-stamping events and maintaining accurate system logs.
• Consumer Electronics: Applicable in consumer devices such as digital clocks, alarms, and other time-sensitive applications.
• Automotive: Useful in automotive systems for timekeeping and data storage in environments with varying temperatures and humidity levels.

Conclusion of DS17287-3

The DS17287-3 is a robust and versatile RTC and Calendar IC that offers a comprehensive set of features and benefits. Its low power consumption, wide operating temperature range, and advanced functionalities such as alarm, daylight savings, and leap year support make it a reliable choice for a variety of applications. Despite being marked as obsolete, the DS17287-3 remains a valuable component for designers and engineers looking for a dependable timekeeping solution. Its compliance with REACH standards and moisture sensitivity level of 1 further enhance its suitability for diverse operating conditions.

DS17287-3 Documents

Download datasheets and manufacturer documentation for DS17287-3

Datasheets :

DS17285,87      

Application Notes :

DS1685/87 and DS17X85/87 Accessing Extended User RAM      

HTML Datasheet :

DS17285,87      

Environmental Information :

Maxim Integrated RoHS Cert       Maxim Integrated REACH