The DS1747P-70IND+ is a high-performance, nonvolatile (NV) memory with a real-time clock (RTC) module from Maxim Integrated, designed to provide a robust and reliable memory solution with integrated time-tracking capabilities. It is particularly suitable for industrial applications where data integrity and timekeeping are critical, even in the absence of power.

This device integrates 512k NV SRAM with a full-featured RTC, which ensures that both timekeeping and data storage continue to function in the event of a power failure. The nonvolatile aspect of the SRAM is maintained by an automatic internal lithium battery, which enables the memory to retain data for over 10 years in the absence of an external power supply.

The RTC provides a full binary-coded decimal (BCD) clock/calendar, programmable alarm, and 100 years of calendar information. The clock/calendar functionality includes seconds, minutes, hours, day, date, month, and year information, and the end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap years.

The DS1747P-70IND+ operates at a voltage of 3.0V to 3.6V and has an industrial temperature range of -40°C to +85°C, making it exceptionally well-suited for harsh environments. The access time for this NV SRAM is 70ns, which provides swift data retrieval and storage, essential for time-sensitive industrial applications.

The module is packaged in a 34-pin PowerCap Module (PCM), which provides a highly reliable direct-to-board connection and also includes a crystal and a lithium battery. This self-contained package simplifies design and enhances the overall reliability of the system it is integrated into.

In summary, the DS1747P-70IND+ from Maxim Integrated is a versatile and durable memory and timekeeping solution, ideal for applications requiring long-term data retention, accurate timekeeping, and operation in extreme environmental conditions.