Maxim Integrated DS1554P-70 Nonvolatile RAM with Real Time Clock

The Maxim Integrated DS1554P-70 is a full-function, year-2000-compliant (Y2K), real-time clock/calendar (RTC) and 512k NV SRAM in one integrated package. This high-performance product is designed for a wide range of applications that require reliable and durable nonvolatile memory with an integrated time-keeping feature.

Constructed with precision and versatility in mind, the DS1554P-70 features a built-in lithium energy source and a crystal, which ensures that the timekeeping and RAM data retention are maintained for over 10 years in the absence of external power. This makes it an ideal solution for systems that require fail-safe data storage and accurate timekeeping, even during power outages or system downtime.

The DS1554P-70 operates in the industrial temperature range of -40°C to +85°C, making it suitable for use in harsh environments. Its 70ns access time ensures fast data retrieval and storage, which is crucial for time-sensitive applications. The device interfaces with a microprocessor via a simple multiplexed byte-wide interface, which allows for easy integration into existing systems.

Key features of the DS1554P-70 include:

• Integrated 512k NV SRAM and Real-Time Clock
• Year 2000-compliant with leap year correction
• Automatic backup and write protection during power fail
• Over 10 years of data retention and clock operation in the absence of power
• Programmable alarm and interrupt function for system management
• Industrial temperature range: -40°C to +85°C
• Byte-wide interface for easy integration

The DS1554P-70 is packaged in a power-dip module, which provides a robust physical form factor and easy mounting on system boards. It is commonly used in telecommunications, embedded systems, industrial control processes, and any application where reliable timekeeping and data retention are a must.

With its combination of nonvolatile memory and integrated RTC, the DS1554P-70 from Maxim Integrated stands out as a comprehensive solution for system designers looking to enhance their products with long-term data security and precise timekeeping capabilities.