The DS1554WP-120 is a highly integrated real-time clock (RTC) from Maxim Integrated that offers a wide array of features for timekeeping applications. This full-function, year 2000-compliant (Y2K) RTC incorporates a real-time clock/calendar, power-fail control circuit, crystal, SRAM, and a power-supply monitor in a single package. It is particularly suitable for applications that require long-term data retention and timekeeping, such as data loggers, industrial control systems, and embedded systems.

Key Features

• Integrated Power-Supply Monitor: The DS1554WP-120 includes a power-supply monitor that automatically switches to a backup battery when the primary power supply falls below a certain threshold, ensuring continuous operation.
• Nonvolatile SRAM: With 512k NV SRAM, the device offers ample storage for critical data that must be preserved during power loss, without the need for an external battery.
• Watchdog Timer: A built-in watchdog timer improves system reliability by initiating a system reset if the microcontroller or other components become unresponsive.
• Trickle Charge Capability: The trickle charge feature allows the device to recharge the backup battery during normal operation, extending the life of the battery.
• Simple Serial Interface: The DS1554WP-120 uses a simple multiplexed byte-wide interface for communication, making it easy to integrate into existing designs.

Applications

This versatile RTC is ideal for a variety of applications where accurate timekeeping is essential:

• Telecommunication systems
• Embedded systems
• Industrial control systems
• Utility meters
• POS terminals

Robust Design

The DS1554WP-120 is designed to be robust and reliable. It operates over an industrial temperature range (-40°C to +85°C) and is available in a 34-pin PowerCap Module (PCM) package, which provides a highly reliable direct-to-board connection and makes it suitable for harsh environments. This product is a testament to Maxim Integrated's commitment to providing solutions that meet the stringent requirements of industrial applications.