Introducing the DS1644-150 Nonvolatile Timekeeping RAM

The DS1644-150 is a cutting-edge memory and timing solution from Maxim Integrated, designed to cater to applications requiring both nonvolatile storage and a precise timekeeping mechanism. This innovative product seamlessly integrates a full-featured real-time clock and a fixed battery with a 32k x 8 nonvolatile static RAM.

Key Features

• Real-Time Clock (RTC): The device includes a highly accurate RTC with a crystal oscillator, ensuring that timekeeping is precise and reliable. The clock provides information on seconds, minutes, hours, day, date, month, and year, with the added benefit of leap year compensation valid up to 2100.
• Nonvolatile Memory: With 32KB of NV SRAM, the DS1644-150 ensures data retention without the need for an external battery. The data is maintained by an internal lithium energy source, which automatically switches on when the primary power is lost, safeguarding data integrity.
• Automatic Power-Fail Chip Deactivation: The internal energy source not only preserves the memory content but also automatically switches the chip to a write-protect mode, ensuring that during power loss, the integrity of the stored data is maintained.
• Low Energy Consumption: Designed for efficiency, the DS1644-150 consumes minimal power, which is crucial for battery-backed memory devices, prolonging the life of the onboard energy source.

Applications

The DS1644-150 is versatile and can be utilized in a wide range of applications, including:

• Industrial control systems
• Utility meters
• Security systems
• Network servers
• Medical equipment
• Embedded systems

Technical Specifications

• Access time: 150ns
• Integrated crystal and RTC (with battery backup)
• Automatic power-fail detection and switch circuitry
• UL recognized
• Operating temperature range: 0°C to +70°C

The DS1644-150 from Maxim Integrated is a reliable and robust choice for systems that require both data integrity and precise timekeeping, even in the event of a power failure. Its integration of storage, timekeeping, and power-fail management in a single package makes it an invaluable component for mission-critical applications.