Maxim Integrated DS1746P-70 Timekeeping RAM

The DS1746P-70 from Maxim Integrated is a robust, full-featured timekeeping solution that combines a full-function real-time clock (RTC) and 64K x 8 nonvolatile static RAM. Designed to meet the needs of a wide array of applications, this device ensures data and timekeeping integrity even when the main power supply is compromised.

Key Features

• Integrated Power Source: The DS1746P-70 includes a built-in lithium energy source and a precision quartz crystal, which ensures a long life and stable timekeeping, with over 10 years of data retention and timekeeping in the absence of external power.
• Real-Time Clock: The RTC provides seconds, minutes, hours, day, date, month, and year information, with the added benefit of automatic leap year compensation valid up to 2100.
• Memory Storage: With 64K x 8 nonvolatile static RAM, users can store critical data that will not be lost when the system power is removed.
• Watchdog Timer: A programmable watchdog timer is included to reset an unresponsive system and ensure continued operation.
• Power-Fail Write Protection: Write protection is provided, ensuring that during power transitions, data integrity is maintained.
• Package: The device is housed in a 34-pin JEDEC standard DIP package, making it easy to integrate into a variety of designs.

Applications

The DS1746P-70 is ideal for applications where reliable timekeeping is critical and data must be preserved during power loss. Common applications include:

• Embedded systems
• Utility meters
• Point of sale (POS) terminals
• Industrial controllers
• Medical devices
• Telecommunication equipment

Maxim Integrated's DS1746P-70 offers a dependable and convenient solution for systems that require accurate timekeeping alongside nonvolatile data storage. Its integration of a real-time clock with RAM makes it a compact, power-efficient, and practical component for maintaining system integrity and performance.