Maxim Integrated DS1587: Integrated Real-Time Clock/Calendar with SRAM

The DS1587 from Maxim Integrated is a full-featured, self-contained timekeeping solution that integrates a real-time clock/calendar and a fixed amount of static RAM. This high-performance product is designed to address the needs of complex systems that require accurate time tracking and data storage without the need for external batteries or additional components.

Key Features

• Integrated Power-Supply: The DS1587 includes an embedded lithium battery, which ensures long-term reliability of the clock/calendar function and data retention in the SRAM without external power.
• Real-Time Clock/Calendar: Tracks time in hours, minutes, and seconds, and calendar information including date, month, and year with leap-year compensation valid up to the year 2100.
• RAM Storage: Comes with 128k x 8 bits of static RAM, providing ample space for data storage and easy access using standard microprocessor interfaces.
• Automatic Power-Fail Detect: The DS1587 automatically switches to battery backup mode during power failure conditions, ensuring uninterrupted timekeeping and data preservation.

Applications

With its robust feature set, the DS1587 is well-suited for a variety of applications, including:

• Embedded systems requiring reliable timekeeping
• Industrial systems with data logging needs
• Utility meters
• POS terminals
• Network hardware, such as routers and switches

Technical Specifications

• Timekeeping Accuracy: ±1 minute/month at 25°C
• Battery Life: 10 years minimum at 25°C
• Data Retention: Minimum of 10 years in the absence of power
• Operating Temperature: 0°C to +70°C
• Package: EDIP (Extended DIP) for ease of integration

The DS1587 from Maxim Integrated offers a compact, reliable, and easy-to-integrate solution for electronic systems requiring accurate timekeeping and data storage capabilities. Its embedded battery and power-fail detect feature ensure that timekeeping and data are preserved, making it a trusted choice for system designers and engineers.