DS1744P-70 Nonvolatile Timekeeping RAM

The DS1744P-70 is a high-performance, full-function timekeeping RAM integrated with a precision real-time clock, a power-fail control circuit, and 256k x 8 nonvolatile static RAM. Manufactured by Maxim Integrated, this product is designed for applications requiring solid timekeeping and data storage capabilities that persist through power outages without the need for an external battery.

Key Features

• Integrated Power-Fail Write Protection: This feature automatically switches to the backup energy source during power failure, ensuring that the clock continues to run and the memory contents are preserved.
• Real-Time Clock (RTC): The DS1744P-70 includes a crystal-controlled RTC that maintains accurate timekeeping with a precision of minutes, seconds, and hundredths of a second.
• Nonvolatile SRAM: With 256k x 8 nonvolatile static RAM, users can store data that will not be lost when the system power is removed. This is ideal for critical data retention requirements.
• Century Byte: The RTC includes a century byte that provides full calendar functionality, including corrections for leap years.
• Low Energy Operation: The device is designed to consume minimal power, which is crucial for battery-backed timekeeping and memory storage.
• Surface-Mount Package: The DS1744P-70 comes in a 28-pin, 600-mil EDIP (JEDEC standard) package, making it suitable for surface-mount technology (SMT) applications.
• Direct Microprocessor Interface: The device supports a direct connection to a microprocessor bus, which allows for easy integration into a wide range of systems.

Applications

With its robust feature set, the DS1744P-70 is ideal for a variety of applications, including:

• Industrial systems
• Utility meters
• POS terminals
• Medical equipment
• Embedded systems
• Telecommunication infrastructure

Overall, the DS1744P-70 from Maxim Integrated provides a reliable and durable solution for systems that require accurate timekeeping and data preservation during power failures. Its integration of RTC and nonvolatile SRAM simplifies design, reduces component count, and enhances overall system reliability.