The DS1643AB from Maxim Integrated is a robust, full-featured nonvolatile timekeeping RAM that integrates a full-function, battery-backed clock and 32k x 8 nonvolatile static RAM in a single package. This innovative product is designed to maintain data and real-time clock accuracy in the absence of an external power supply, ensuring seamless performance in a wide range of applications, including embedded systems, utility meters, and industrial equipment.

Key Features

• Integrated Power Source: The DS1643AB comes with a self-contained lithium energy source and power-fail control circuitry that guarantees over 10 years of data retention and clock functionality in the absence of external power.
• Real-Time Clock: The device includes a full-function real-time clock, which provides seconds, minutes, hours, day, date, month, and year information. The clock is accurate to ±1 minute per month at 25°C.
• Nonvolatile RAM: 32k bytes of fully static nonvolatile RAM offer storage for critical data that must be preserved during power loss events.
• Automatic Power-Fail Chip Deactivation: When VCC falls below the minimum VTRIP level, the device automatically switches to the backup energy source, ensuring data integrity and clock operation.
• Low Power Operation: The DS1643AB's energy-efficient design ensures minimal power consumption, making it ideal for battery-powered applications.
• Surface-Mount Package: The encapsulated module is available in a 34-pin JEDEC standard DIP package, suitable for surface mounting and compatible with standard sockets.

Applications

The DS1643AB's unique combination of nonvolatile RAM and real-time clock functionality make it an excellent choice for a variety of applications, including:

• Industrial control systems
• Network servers
• Telecommunications equipment
• POS terminals
• Embedded systems

With Maxim Integrated's reputation for quality and reliability, the DS1643AB Nonvolatile Timekeeping RAM is a trusted component for maintaining critical data and timekeeping in systems where power reliability cannot be guaranteed.