Maxim Integrated DS1643P-70 Nonvolatile Timekeeping RAM

The DS1643P-70 is a state-of-the-art nonvolatile timekeeping RAM module developed by Maxim Integrated, designed to provide a full-featured battery-backed real-time clock (RTC) and memory component in a single package. This innovative product combines 32k x 8 nonvolatile static RAM, a real-time clock, a crystal, and a lithium energy source into a 24-pin encapsulated DIP package. It is engineered to maintain full functionality in the absence of external power by drawing from its integrated long-life battery.

One of the key features of the DS1643P-70 is its integrated real-time clock, which accurately tracks time in hours, minutes, and seconds, as well as the day, month, and year. The RTC functionality is compliant with leap year compensation up to the year 2100, ensuring long-term reliability and accuracy. It also offers a programmable alarm and interrupt function, which can be set to trigger on a specific date, day of the week, or after a designated time interval, making it highly versatile for various time-critical applications.

The nonvolatile RAM aspect of the DS1643P-70 provides 32k x 8 bits of memory, ensuring data retention without the need for an external battery. This feature is particularly useful in systems that cannot afford to lose data during power outages or when power is removed. The data is automatically protected by the onboard lithium energy source, which has a lifespan that can exceed 10 years, ensuring data integrity over an extended period.

Designed for convenience, the DS1643P-70 is fully compatible with industry-standard microprocessor buses. It supports direct bus connection without additional hardware, facilitating easy integration into existing designs. The device operates over a wide temperature range of -40°C to +85°C, making it suitable for use in a variety of environments, from industrial to commercial applications.

In summary, the Maxim Integrated DS1643P-70 Nonvolatile Timekeeping RAM is an ideal solution for applications requiring reliable timekeeping and data storage without the risk of data loss during power failure. Its integration of RTC and memory functions into a single module not only saves space but also simplifies design and enhances system reliability.