Maxim Integrated DS1243Y100IND Nonvolatile Timekeeping RAM

The DS1243Y100IND is a highly integrated memory and timing solution from Maxim Integrated, designed to provide reliable nonvolatile storage with an integrated real-time clock (RTC) and crystal. This component is particularly suited for applications that require data and timekeeping to be maintained in the absence of power, making it an ideal choice for industrial and critical systems where data integrity and time accuracy are paramount.

At the heart of the DS1243Y100IND is a full-featured, byte-wide 64K NV SRAM with a built-in quartz crystal and lithium energy source. This combination ensures that data is retained and the timekeeping function continues for over 10 years in the absence of an external power supply. The NV SRAM offers unlimited read and write cycles, providing a robust storage solution for frequently updated data without the wear-out mechanism typical of other nonvolatile memories.

The real-time clock in the DS1243Y100IND is capable of tracking time in seconds, minutes, hours, days, date, month, and year, with leap year compensation valid up to the year 2100. It provides timekeeping accuracy in industrial temperature ranges, making it suitable for harsh environments. The clock can also be halted and started again to conserve power when necessary, further enhancing its flexibility in power-sensitive applications.

Designed with a standard JEDEC 28-pin, 600-mil DIP package, the DS1243Y100IND is easy to integrate into existing designs. It features an automatic power-fail chip deselect and write protection, ensuring data integrity during power transitions. The device also includes a precision voltage reference and a comparator circuit that monitors the VCC input for an out-of-tolerance condition, triggering the automatic write-protection feature to prevent data corruption.

Overall, the DS1243Y100IND from Maxim Integrated is a reliable and versatile component for systems that cannot afford to lose data or time accuracy. It is particularly well-suited for industrial control systems, utility meters, POS terminals, medical devices, and other applications where the integrity of both data and time is crucial.