The DS1747W-120+ from Maxim Integrated is a robust timekeeping RAM that integrates a full-featured real-time clock/calendar and 512k x 8 nonvolatile static RAM. Designed to be a reliable solution for data storage and precise timekeeping, this component is particularly suitable for systems that must maintain accurate time and date information and preserve data through power loss events.

Key Features

• Integrated Power-Supply: Comes with a built-in lithium energy source and a precision crystal oscillator, ensuring long-term data retention and accurate timekeeping for over 10 years in the absence of external power.
• Real-Time Clock/Calendar: Keeps track of seconds, minutes, hours, days, date, month, and year information with automatic leap year compensation valid up to the year 2100.
• High-Speed NV SRAM: Offers 512k x 8 nonvolatile static RAM, providing quick access to data and ensuring data persistence without battery dependency.
• Watchdog Timer: A programmable watchdog timer enhances system reliability by initiating a system reset in case of a system malfunction or software lockup.
• Power-Fail Protection: Includes circuitry that protects the RAM data from corruption during power loss or low voltage conditions.
• Surface-Mount Package: Available in a 28-pin, 330-mil SO package that is well-suited for space-constrained applications.

Applications

The DS1747W-120+ is an ideal choice for a wide range of applications where reliable timekeeping and data retention are critical. It is commonly used in:

• Industrial control systems
• Utility meters
• POS terminals
• Medical equipment
• Telecommunication infrastructure
• Embedded systems

With its combination of nonvolatile RAM and real-time clock functionalities, the DS1747W-120+ from Maxim Integrated stands out as a versatile component that can significantly enhance the performance and reliability of sophisticated electronic systems.