The DS1640S from Maxim Integrated is an innovative memory and timekeeping solution that combines the functionality of a full-featured real-time clock (RTC) with the convenience of nonvolatile RAM storage. This integrated device provides a robust system for preserving both time and data in the event of a power failure, making it an ideal choice for a wide range of applications such as utility meters, industrial systems, and telecom infrastructure.

Key Features

• Integrated Power-Supply and Battery Input: The DS1640S includes an on-chip power supply and a battery input, ensuring that timekeeping and RAM data are maintained during power loss.
• Real-Time Clock: The RTC keeps track of seconds, minutes, hours, day, date, month, and year, with leap-year compensation valid up to the year 2100.
• Nonvolatile RAM: With 32k x 8 bits of nonvolatile static RAM, users can store data that will not be lost when the system power is removed.
• Automatic Battery Switchover: When primary power is lost, the device automatically switches to the battery supply, ensuring uninterrupted operation.
• Low Power Consumption: Designed for energy efficiency, the DS1640S is ideal for battery-backed applications.
• Surface-Mount Package: The device comes in a 24-pin 300-mil SO package, making it suitable for space-constrained applications.

Applications

• Utility Metering
• Industrial Systems
• Telecommunications
• Embedded Systems

The DS1640S's combination of nonvolatile RAM and real-time clock functionality, along with its easy integration into existing systems, makes it a versatile and essential component for maintaining data integrity and accurate timekeeping. Its robust feature set ensures that critical data and time information are preserved, providing system designers with a reliable and long-lasting solution.