The Maxim Integrated DS1553-70 is a full-featured, year 2000-compliant (Y2K), timekeeping RAM that integrates a real-time clock, alarm, 100-year calendar, voltage-sense circuit, and 64 x 8 bits of static RAM. It is designed to provide a comprehensive timekeeping solution that maintains data integrity and accurate timekeeping in the absence of external power.

Key Features

• Integrated Real-Time Clock (RTC): The DS1553-70 features a highly accurate RTC with a crystal oscillator, which ensures precise time tracking over a wide temperature range.
• Battery Backup: With an onboard lithium battery, the device can maintain timekeeping and RAM data for over 10 years in the absence of external power.
• Nonvolatile RAM: The 64 x 8 bits of static RAM provide nonvolatile data storage, safeguarding critical information during power loss.
• Automatic Power-Fail Detect: The built-in voltage-sense circuit automatically switches to battery backup mode during power failures, preserving data and timekeeping operations.
• Programmable Alarm: An alarm function is programmable to the second, minute, hour, day of the week, date, or month, providing flexible reminder or wake-up call functionality.
• 100-Year Calendar: The device includes a century byte that automatically adjusts for leap years and provides a complete calendar up to the year 2100.
• Simple Serial Interface: The timekeeping RAM is easily accessed via a simple multiplexed byte-wide interface, which facilitates integration into a variety of systems.

Applications

The DS1553-70 is ideal for applications that require reliable timekeeping and data storage through power cycles, such as:

• Telecommunication systems
• Industrial systems
• Embedded processors
• Utility meters
• POS terminals

With its robust feature set and long-term reliability, the Maxim Integrated DS1553-70 Timekeeping RAM is a versatile component that delivers precision and stability in time-sensitive applications.