Maxim Integrated's DS1643-100 Nonvolatile Timekeeping RAM

The DS1643-100 from Maxim Integrated is a state-of-the-art nonvolatile timekeeping RAM that ingeniously integrates a full-featured real-time clock and a 64K x 8 nonvolatile static RAM in one package. This innovative module provides a reliable and compact solution for systems that require battery-backed RAM and an accurate timekeeping mechanism. The DS1643-100 is particularly well-suited for applications in networking, telecommunications, and embedded systems where data integrity and precise timekeeping are paramount.

One of the key features of the DS1643-100 is its nonvolatility. The device employs a self-contained lithium energy source and control circuitry, which not only maintains the time and date but also retains RAM data when the main power is lost. This ensures that critical information is preserved without the need for an external battery. The real-time clock (RTC) provides information on the year, month, date, day, hours, minutes, and seconds in binary-coded decimal (BCD) format. The RTC is highly accurate and includes automatic leap year compensation valid up to the year 2100.

The DS1643-100 is designed with convenience in mind, featuring a simple parallel interface for easy integration into existing systems. The device operates over a wide voltage range and has a very low power consumption, making it suitable for portable and battery-powered installations. The timekeeping function is maintained with as little as 2V of power, ensuring continuous operation during system brownouts or power failures.

Additional features of the DS1643-100 include a programmable periodic or polled alarm, which allows for scheduling of time-specific tasks or monitoring critical events. Moreover, a precision crystal oscillator serves as the heart of the RTC, ensuring stable and accurate timekeeping.

In summary, the DS1643-100 from Maxim Integrated is a robust and reliable component that provides both nonvolatile memory storage and precise timekeeping capabilities in one integrated package. Its features make it an ideal choice for a wide range of applications where data integrity and time management are critical.