Maxim Integrated DS1647-120 Timekeeping RAM

The DS1647-120 from Maxim Integrated is a versatile, high-performance integrated circuit that combines a full-featured real-time clock (RTC) with a 1024k x 8 nonvolatile static RAM. This unique combination of timekeeping and memory storage functionality makes it an ideal solution for a wide range of applications in data logging, industrial control systems, and network hardware where reliable time-stamping and secure data retention are essential.

The RTC component of the DS1647-120 provides a complete set of timekeeping features, including seconds, minutes, hours, day, date, month, and year information. The accuracy of the clock is maintained within ±1 minute per month at room temperature, and the device is designed to handle leap years up to the year 2100. Additionally, the clock operates in either 24-hour or 12-hour format with an AM/PM indicator, catering to various user preferences and international standards.

One of the key features of the DS1647-120 is its integrated, long-life lithium battery, which ensures that timekeeping and RAM data are maintained in the absence of external power. This makes the device particularly useful in systems that require data and time to be preserved during power outages or when the main system power is turned off.

The nonvolatile static RAM section provides a substantial 1024k x 8 memory capacity, allowing users to store critical data securely. The nonvolatile nature of the memory means that data is retained without the need for a continuous power supply, thanks to the onboard battery backup.

Communication with the DS1647-120 is facilitated through a simple parallel interface, making it easy to integrate into most microprocessor-based systems. The device is packaged in a 34-pin PowerCap Module (PCM), which not only provides a compact footprint but also offers enhanced reliability and durability in harsh environments.

In summary, the Maxim Integrated DS1647-120 is a highly reliable, feature-rich timekeeping RAM that offers a unique blend of real-time clock capabilities and nonvolatile data storage, making it an excellent choice for applications requiring dependable time-stamping and data retention.