Maxim Integrated DS1644-120+ Nonvolatile Timekeeping RAM

The DS1644-120+ is a state-of-the-art nonvolatile timekeeping RAM module from Maxim Integrated, designed to provide a full-featured battery-backed real-time clock (RTC) and a 32K x 8 nonvolatile static RAM. This innovative product is a perfect solution for applications requiring reliable timekeeping and data storage that persists through power cycles.

Key Features:

• Integrated Power Supply: The DS1644-120+ includes a built-in lithium energy source and a quartz crystal, which ensures that timekeeping and RAM data are maintained in the absence of an external power supply.
• Real-Time Clock: The RTC provides seconds, minutes, hours, day, date, month, and year information with leap year compensation valid up to the year 2100.
• High-Speed NV SRAM: 32K x 8 nonvolatile static RAM offers fast access times and unlimited read/write endurance.
• Automatic Power-Fail Chip De-Select and Write Protection: Ensures that data is not corrupted during power transitions.
• Low Power Operation: Extends the life of the on-board battery, making it an ideal choice for portable and long-life applications.
• Surface-Mount Package: The device is available in a 28-pin 600-mil EDIP or 300-mil SOIC package, providing flexibility for various design layouts.

Applications:

The DS1644-120+ is versatile and can be used in a wide range of applications, including:

• Industrial systems
• Utility meters
• POS terminals
• Network servers
• Medical equipment
• Embedded systems

Technical Specifications:

• Voltage Range: 4.5V to 5.5V
• Access Time: 70 ns
• Operating Temperature: 0°C to +70°C
• Package: EDIP or SOIC

With the DS1644-120+, Maxim Integrated continues to deliver innovative, high-quality solutions for timekeeping and data storage needs. Its integration of a real-time clock and nonvolatile memory ensures that critical data and time information are preserved, making it an essential component for a variety of electronic systems.