Maxim Integrated DS1747WP-120+ Nonvolatile Timekeeping RAM

The DS1747WP-120+ is a high-performance, nonvolatile timekeeping RAM module designed by Maxim Integrated to provide a reliable and durable data storage and real-time clock (RTC) solution for a wide array of applications. This integrated device combines a full-featured real-time clock with a 32K x 8 nonvolatile static RAM. It is specifically engineered to maintain critical data and clock functionality across power loss events without the need for an external battery.

The module operates over an industrial temperature range and features a precision crystal oscillator, which ensures accurate timekeeping. The RTC provides information such as seconds, minutes, hours, day, date, month, and year. It also has the capability to account for leap years up to the year 2100. The DS1747WP-120+ is equipped with an integrated power-fail detect circuit, which automatically switches to the backup energy source when a power failure is detected, thus preserving the integrity of the data and the RTC.

One of the key benefits of the DS1747WP-120+ is its integration of nonvolatile elements. The use of nonvolatile SRAM allows for data retention without the periodic replacement of a battery, which is both cost-effective and environmentally friendly. This feature is particularly beneficial in environments where maintenance is difficult or where long-term reliability is paramount.

The DS1747WP-120+ is packaged in a robust 34-Pin PowerCap Module (PCM), which is designed to be surface-mounted directly onto a printed circuit board. This compact package makes it an ideal choice for space-constrained applications. The device also supports a wide voltage range, typically from 2.7V to 3.6V, providing flexibility for various system designs.

In summary, Maxim Integrated's DS1747WP-120+ is a versatile and reliable component that offers the combined functionality of a real-time clock and nonvolatile RAM. It's well-suited for applications in telecommunications, industrial controls, embedded systems, and any other systems that require data and time to be maintained accurately across power cycling events.