The DS1225AB-200+ is a 64K Nonvolatile SRAM designed by Maxim Integrated, which offers a unique combination of volatile and nonvolatile memory functionality. This high-performance, 8K x 8 nonvolatile static RAM integrates a fully static nonvolatile RAM with a lithium energy source and control circuitry to ensure data integrity and to maintain the SRAM’s contents when the main power supply is lost.

Key Features

• Capacity: 64 Kbit (8 K x 8)
• Speed: 200ns Access Time
• Interface: Parallel
• Power Source: Self-contained lithium energy source
• Reliability: Data retention in the absence of external power
• Package: 28-Pin EDIP or 32-Pin LCC
• Temperature Range: Operates from -40°C to +85°C

Applications

The DS1225AB-200+ is ideal for a wide range of applications where data integrity is paramount and the requirement for data to be preserved without an external power supply is necessary. Applications include:

• Redundant array of independent disks (RAID) systems
• Industrial controllers
• Utility meters
• Medical devices
• Point-of-sale terminals

Product Advantages

The DS1225AB-200+ offers significant advantages over traditional volatile SRAMs. Its nonvolatility eliminates the need for battery backup and periodic battery replacement. The integrated lithium energy source can maintain data for over 10 years in the absence of external power. Furthermore, the fast access time of 200ns allows for quick data retrieval, making it suitable for high-performance applications.

Easy Integration

This product is designed for easy integration into a variety of systems. It is directly compatible with the JEDEC standard 28-pin 600-mil DIP socket and operates with a single 5V power supply. Its pin compatibility with volatile SRAM allows for a straightforward upgrade path to nonvolatile memory without significant hardware modifications.