The DS1251Y-70 is a high-performance, 3.3V/5V 4096k Nonvolatile SRAM with a built-in real-time clock, designed and manufactured by Maxim Integrated. This innovative memory solution provides 4 Megabit of memory storage, combining the data storage benefits of static RAM with the persistence of nonvolatile memory. The integration of a real-time clock and calendar further enhances its utility in a wide array of applications, particularly in those requiring data logging and time stamping.

Key Features

• Nonvolatile SRAM: Offers 4 Mbit of storage, with unlimited read and write cycles, and data retention without the need for a battery backup.
• Real-Time Clock: Includes a full-function, binary-coded decimal (BCD) clock/calendar that is accessible through a simple multiplexed interface.
• High-Speed Operation: Compatible with 70ns access time, ensuring swift data access and processing capabilities.
• Automatic Battery Switchover: When external power is lost, the device automatically switches to the battery supply, ensuring data and clock operations continue without interruption.
• Low-Power Operation: Designed for energy efficiency, which is vital for battery-backed memory applications.
• Surface-Mount Package: Available in a 32-pin EDIP or TSOP package, suitable for space-constrained applications.

Applications

The DS1251Y-70 is particularly well-suited for use in applications where the integrity of data and accurate timekeeping are critical. These include:

• Industrial systems
• Embedded computers
• Utility meters
• Medical equipment
• POS terminals
• Network routers, hubs, switches, and bridges

Technical Specifications

With the DS1251Y-70, Maxim Integrated continues to demonstrate its commitment to providing innovative, reliable, and high-quality memory solutions that meet the evolving needs of the technology industry.