Maxim Integrated DS1744P100 Nonvolatile Timekeeping RAM

The Maxim Integrated DS1744P100 is a state-of-the-art, year 2000-compliant, nonvolatile timekeeping RAM that integrates a full-function real-time clock, 256k NV SRAM, power-fail control circuit, and battery into a single 34-pin PowerCap Module. This innovative product is designed to maintain data integrity and provide accurate timekeeping in a wide array of applications, particularly in situations where reliable time tracking and data retention are critical during power loss.

The real-time clock (RTC) component of the DS1744P100 provides a complete set of timekeeping features including seconds, minutes, hours, day, date, month, and year, with leap year compensation valid up to the year 2100. It maintains precise time tracking with a crystal-controlled oscillator, ensuring high accuracy over a broad temperature range and long-term reliability. The RTC functionality is complemented by an interrupt output that can be programmed for periodic interrupts or as an alarm trigger, adding versatility to the module's use cases.

The nonvolatile SRAM offers 256k of storage, providing ample space for critical data that must be preserved during power outages. The integration of a lithium energy source within the module ensures a lifespan of over 10 years of data retention and clock operation in the absence of external power. This feature is particularly useful for systems that cannot afford to lose data or require an accurate time reference upon power restoration.

Maxim Integrated's DS1744P100 is equipped with an automatic power-fail chip deselect and write protection, ensuring data integrity during power transitions. The PowerCap Module packaging allows for direct connection to a motherboard, and the battery is user-replaceable, enhancing the convenience and longevity of the device.

Overall, the DS1744P100 from Maxim Integrated is a robust and reliable solution for systems that require nonvolatile memory backup, real-time clock capabilities, and a seamless transition between power states. It is an ideal choice for industrial control systems, utility meters, POS terminals, and other applications where maintaining accurate time and data integrity is paramount.