Maxim Integrated DS1643P-100+ Nonvolatile Timekeeping RAM

The DS1643P-100+ from Maxim Integrated is a high-performance, nonvolatile timekeeping RAM that integrates a full-featured real-time clock and a 32K x 8 nonvolatile static RAM. This innovative product is designed to provide a reliable and durable memory solution with a built-in timekeeper, making it perfect for applications that require data and timekeeping to be maintained without an external battery.

One of the key features of the DS1643P-100+ is its ability to retain data and time information for over 10 years in the absence of power. This is achieved through the integration of a lithium energy source and a quartz crystal, which are both encapsulated within the module to prevent tampering and to provide a stable operating environment for the clock. The device operates in a wide voltage range of 4.5V to 5.5V, which makes it suitable for a variety of industrial and commercial applications.

The real-time clock in the DS1643P-100+ provides seconds, minutes, hours, day, date, month, and year information, with automatic leap year compensation valid up to the year 2100. The clock accuracy is maintained within ±1 minute per month at 25°C. Additionally, the DS1643P-100+ offers a programmable alarm and interrupt function, which can be set to trigger on a specific date, day of the week, or after a specific time interval, providing versatile scheduling capabilities for time-sensitive applications.

The nonvolatile memory feature of the DS1643P-100+ ensures that data is not lost when the power is removed. The data is automatically protected during power loss by the internal energy source, which eliminates the need for an external battery. This feature is particularly useful in systems that cannot afford to lose critical data and need to ensure data integrity at all times.

Designed with a 28-pin EDIP (Encapsulation Dual Inline Package), the DS1643P-100+ is easy to integrate into existing designs. It is widely used in networking hardware, telecommunications, embedded systems, and other electronic applications that require robust timekeeping and data retention without the maintenance or replacement concerns associated with external batteries.

Overall, the Maxim Integrated DS1643P-100+ offers a compact, secure, and reliable solution for systems that need nonvolatile memory storage with an integrated real-time clock, making it an essential component for a wide range of time-sensitive and data-critical applications.