Maxim Integrated DS1384G: Real-Time Clock with NV SRAM

The DS1384G is a versatile, full-featured real-time clock (RTC) module from Maxim Integrated, designed to provide precise timekeeping along with nonvolatile (NV) static RAM storage. This robust timekeeping solution is ideal for applications that require reliable time management and data retention even during power loss.

At the heart of the DS1384G is a highly accurate RTC, which maintains seconds, minutes, hours, day, date, month, and year information. The time is kept in both 24-hour and 12-hour formats with an AM/PM indicator, catering to a wide range of timekeeping preferences. The device also features a leap year compensation feature that is valid up to the year 2100, ensuring long-term accuracy without the need for manual adjustments.

One of the key features of the DS1384G is its integrated NV SRAM, which offers a secure and reliable storage space for critical data. This memory is preserved across power cycles thanks to an onboard lithium battery, thus ensuring data integrity and preventing data loss in the event of a power failure. The device also includes a power-fail detect circuit, which automatically switches to the battery supply when a power failure is detected, further safeguarding the stored data and time information.

The DS1384G provides a programmable alarm function that can be set to trigger on a specific second, minute, hour, day, or date. This feature is invaluable for scheduling tasks and reminders, making it a suitable choice for systems that require timely alerts or actions to be performed.

Communication with the DS1384G is facilitated through a simple, multiplexed byte-wide interface, allowing for easy integration into a variety of microprocessor-based systems. The device is housed in a 28-pin EDIP (Extended Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package, making it compact and suitable for space-constrained applications.

In summary, the Maxim Integrated DS1384G is a reliable and feature-rich RTC module with the added benefit of NV SRAM, making it an excellent choice for applications such as data loggers, utility meters, and other systems where precise timekeeping and data retention are critical.