The Maxim Integrated DS1345YL-100 is a state-of-the-art, 3.3V, 1024k Nonvolatile Timekeeping RAM designed to provide a full-featured, battery-backed real-time clock (RTC) and a significant amount of NV SRAM storage in a single, high-performance package. This innovative product is ideal for applications that require reliable timekeeping and data storage that persists through power outages, without the need for an external battery.

At the heart of the DS1345YL-100 is a full-function, binary-coded decimal (BCD) clock/calendar that is accessible through a simple multiplexed byte-wide interface. This clock/calendar automatically adjusts for months with fewer than 31 days, including corrections for leap year. It also features a programmable alarm and interrupt function that can be set to a specific time for wake-up calls to the host processor.

The DS1345YL-100 integrates 1024k x 8 nonvolatile SRAM, which is directly accessed like a conventional SRAM. This feature allows the user to easily store data that must be preserved in the event of power loss. The device automatically switches to its internal lithium energy source when power is lost, ensuring that timekeeping and SRAM data remain intact.

The device is designed for high reliability and durability, with an operating temperature range of -40°C to +85°C, making it suitable for a wide variety of demanding applications, including telecommunications, networking, industrial systems, and portable equipment. The DS1345YL-100 also includes a precision temperature-compensated voltage reference and comparator circuit to monitor the status of VCC. When a power failure is detected, the device automatically write-protects the external SRAM to prevent data corruption.

The DS1345YL-100 comes in a power-saving, 32-pin TSOP (Type I) package, and its low-power design is critical for battery-backed memory applications. Maxim Integrated's commitment to quality and innovation makes the DS1345YL-100 an excellent choice for designers looking to add robust timekeeping and nonvolatile data storage to their systems.