The DS1557WP+120 is a robust, full-featured real-time clock (RTC) module from Maxim Integrated, designed to provide a comprehensive timekeeping solution for a wide array of applications. This module integrates a real-time clock/calendar and 128k x 8 non-volatile static RAM, offering a convenient and reliable way to maintain accurate time and preserve data even in the event of a power loss.

Key Features

• Real-Time Clock/Calendar: Tracks time in hours, minutes, and seconds, and maintains a calendar with date, month, and year information.
• Non-Volatile Memory: Comes with 128k x 8 bits of static RAM, which is battery-backed to ensure data retention without power.
• Automatic Power-Fail Detect: The built-in circuitry automatically switches to the backup battery when power failure is detected, seamlessly continuing timekeeping and data preservation.
• Programmable Watchdog Timer: Enhances system reliability through its reset function, which can be set for specific intervals.
• Durable Construction: Encased in a water-resistant (WP) package, making it suitable for harsh environments.
• Long Battery Life: Features a long-life battery that ensures reliable operation for the lifespan of the product.
• Simple Integration: Designed for ease of integration into existing systems, with a simple interface for communication with microcontrollers and other digital devices.

Applications

The DS1557WP+120 is ideal for applications that require accurate timekeeping and data retention through power cycles. Its rugged design makes it perfect for industrial control systems, security systems, network servers, data loggers, and other applications that operate in challenging conditions.

Technical Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature: -40°C to +85°C
• Package: Water-resistant PowerCap Module
• Communication: Serial interface compatible with SPI/3-wire protocols

Maxim Integrated's DS1557WP+120 real-time clock module is a testament to the company's commitment to delivering high-quality, durable, and reliable components. It stands out as an excellent choice for maintaining precise time and data integrity across various demanding applications.