Maxim Integrated DS1747-70IND: Robust Timekeeping RAM

The DS1747-70IND from Maxim Integrated is a high-performance, nonvolatile timekeeping RAM that integrates a full-function, binary-coded decimal (BCD) clock/calendar, 512 bytes of nonvolatile static RAM, a programmable interrupt, and a power-fail control circuit. This precision device is specifically designed for industrial applications where reliable and durable data storage is crucial, even in the absence of power.

Key Features

• Integrated Power-Fail Write Protection: The DS1747-70IND includes an automatic power-fail chip deselect and write protection, ensuring that data is preserved even when power levels drop below a defined threshold.
• Real-Time Clock/Calendar: The onboard clock/calendar keeps track of seconds, minutes, hours, day, date, month, and year information with leap-year compensation valid up to the year 2100.
• Low Energy Consumption: Designed for energy-sensitive applications, this device operates with very low power consumption, making it ideal for battery-backed applications.
• Programmable Interrupt: An interrupt output is programmable to a variety of functions, including alarm interrupts or periodic interrupts at rates from 30.5 microseconds to once per day.
• Industrial Temperature Range: The DS1747-70IND is built to withstand extreme conditions, operating reliably across an industrial temperature range of -40°C to +85°C.

Applications

This versatile component is suitable for a wide range of industrial applications, such as:

• Embedded systems requiring a durable real-time clock
• Industrial machinery that must maintain accurate time logs
• Utility meters with time-stamp data for usage tracking
• Telecommunication systems that require time synchronization

With its combination of nonvolatile RAM, real-time clock, and robust power-fail protection, the DS1747-70IND from Maxim Integrated is a reliable choice for maintaining critical data and time information in challenging industrial environments. Its package is also designed for direct replacement of standard 28-pin JEDEC sockets, allowing for easy integration into existing designs.