Maxim Integrated DS1250AB-70+ Nonvolatile Memory

The Maxim Integrated DS1250AB-70+ is a high-performance, 4096k Nonvolatile (NV) SRAM with a built-in real-time clock. This memory module provides an easy and reliable solution for applications requiring frequent or rapid data updates without the risk of data loss due to power failures. Its robust design is ideal for a wide range of data storage applications that require long-term reliability, such as industrial control systems, medical equipment, and network infrastructure.

At the heart of the DS1250AB-70+ is a fully integrated NV SRAM, which combines a large 4M x 8-bit static RAM array with a nonvolatile quantum trap storage element for each memory cell. This unique design ensures that all data is automatically transferred to the nonvolatile storage upon power-down and is restored to the static RAM when power is reapplied. This process is transparent to the user and happens without any user intervention.

The device operates over an industrial temperature range of -40°C to +85°C, which makes it suitable for challenging environmental conditions. It features an access time of 70ns, allowing for fast data retrieval and storage, which is crucial for high-speed computing and real-time processing applications.

With a simple parallel interface, the DS1250AB-70+ is easy to integrate into existing systems. It is also compatible with JEDEC standards, ensuring interoperability with a wide range of microprocessors and microcontrollers. The module is provided in a 32-pin EDIP (Encapsulated Dual In-line Package) or TSOP (Thin Small Outline Package), which offers a compact footprint for space-constrained applications.

Additionally, the DS1250AB-70+ includes a built-in lithium energy cell that maintains the date and time within the real-time clock and ensures that the nonvolatile elements retain data for over 10 years in the absence of power. This self-contained energy source eliminates the need for external batteries or supercapacitors, simplifying design and reducing system maintenance.

For designers looking for a reliable and durable nonvolatile memory solution that can withstand the rigors of industrial applications, the Maxim Integrated DS1250AB-70+ offers an excellent balance of performance, reliability, and ease of use.