The DS1244Y-70+ is a highly integrated, 3.3V nonvolatile timekeeping RAM device from Maxim Integrated that combines a full-featured real-time clock and 1024k x 8 nonvolatile static RAM. It is designed to provide a long-term, reliable, battery-backed memory and timekeeping solution for sophisticated electronic systems.

Key Features

• Integrated Real-Time Clock (RTC): The device includes a precision RTC that tracks time in seconds, minutes, hours, days, date, month, and year, with leap-year compensation up to the year 2100.
• Nonvolatile Memory: Equipped with 1 Mbit of NV SRAM, the DS1244Y-70+ ensures data retention without a power supply, thanks to its internal lithium energy source.
• Low Power Consumption: Designed for energy efficiency, this component operates in a wide voltage range of 2.97V to 3.63V, making it suitable for battery-powered applications.
• Battery Backup: An integrated, long-life, replaceable lithium battery provides over 10 years of data retention and RTC functionality in the absence of external power.
• High-Speed Operation: The device supports a 70ns access time, allowing for quick read and write operations to the memory.
• Automatic Power-Fail Chip Deactivation: When power conditions degrade, the device automatically switches to the battery supply, ensuring data integrity and clock operation.
• Industrial Temperature Range: The DS1244Y-70+ operates effectively across an industrial temperature range of -40°C to +85°C.

Applications

This memory module is ideal for a wide array of applications where reliable timekeeping and data retention are critical, such as:

• Embedded systems
• Utility meters
• Industrial controllers
• Point-of-sale (POS) systems
• Medical devices
• Security systems

With its combination of nonvolatile memory, integrated RTC, and robust power management, the DS1244Y-70+ from Maxim Integrated is a comprehensive solution for maintaining accurate time and preserving critical data in the event of a power loss.