The DS1557WP-120+ is a robust, full-featured real-time clock (RTC) module with an integrated battery backup and a wealth of additional functionalities. Designed and manufactured by Maxim Integrated, a leader in analog and mixed-signal engineering, this device ensures reliable timekeeping and data storage even when the main power supply is lost.

Key Features

• Integrated Power Supply: The DS1557WP-120+ includes a built-in lithium battery, ensuring that the clock continues to run and the memory retains data for a minimum of 10 years in the absence of external power.
• Memory Capacity: Equipped with 512K x 8 nonvolatile SRAM, this module provides ample storage for data that must not be lost during a power failure.
• Watchdog Timer: An onboard watchdog timer improves system reliability by initiating a system reset in case of a malfunction, ensuring the system recovers from an error state.
• Timekeeping: The device maintains seconds, minutes, hours, day, date, month, and year information with automatic leap year compensation up to the year 2100, providing long-term accuracy and reliability.
• Industrial Temperature Range: With an operational temperature range of -40°C to +85°C, the DS1557WP-120+ is suitable for use in harsh environments and demanding industrial applications.
• Form Factor: The module comes in a 34-Pin PowerCap Module package, designed for surface-mount technology (SMT) and easy integration into a variety of systems.

Applications

The DS1557WP-120+ is ideal for an array of applications where accurate timekeeping is critical, such as:

• Embedded systems
• Utility meters
• Industrial controllers
• POS terminals
• Network servers
• Telecommunications equipment

Product Specifications

With its combination of nonvolatile memory, long-term battery backup, and extensive temperature tolerance, the DS1557WP-120+ is a reliable choice for maintaining critical data and timekeeping in electronic systems.