Maxim Integrated DS1243Y-120 Nonvolatile Timekeeping RAM

The DS1243Y-120 is a high-quality, integrated memory and timekeeping solution manufactured by Maxim Integrated. This product combines a full-featured real-time clock and a 4096 x 8 nonvolatile static RAM. Designed to maintain data and accurate timekeeping in the absence of an external power source, the DS1243Y-120 is an ideal choice for applications requiring reliable timekeeping and data retention without battery dependency.

The device operates in the industrial temperature range of -40°C to +85°C and is rated for a 120ns access time, making it suitable for high-performance industrial applications. The nonvolatile timekeeping RAM is powered by an onboard lithium energy source that can maintain data and real-time clock operations for over 10 years in the absence of external power.

Key features of the DS1243Y-120 include:

• A built-in, long-life lithium battery that ensures data and time retention during power loss.
• Integrated real-time clock (RTC) with an accuracy of ±1 minute per month at 25°C, which includes an oscillator, crystal, and backup energy source.
• Complete clock functions including seconds, minutes, hours, day, date, month, and year with leap year compensation valid up to the year 2100.
• 4096 x 8 nonvolatile static RAM for data storage, which is directly accessible like a conventional RAM.
• Automatic power-fail chip deselect and write protection that prevents data corruption during power transitions.
• Surface-mount package options, making it suitable for automated production processes.

The DS1243Y-120 is encapsulated in a 28-pin EDIP (Encapsulated Dual In-line Package) or surface mountable SOIC (Small Outline Integrated Circuit) package, providing flexibility for various design layouts. This product is commonly used in systems that require fault-tolerant data storage, such as industrial controllers, utility meters, POS terminals, and medical devices.

Maxim Integrated's commitment to quality ensures that the DS1243Y-120 provides a reliable and durable nonvolatile memory solution, with the added benefit of integrated timekeeping capabilities, making it a comprehensive component for maintaining critical data and time information.