The Maxim Integrated DS1286 Watchdog Timekeeper is a versatile and robust integrated circuit that combines multiple functions critical for systems requiring reliable timekeeping, data storage, and watchdog capabilities. This self-contained timekeeping chip is ideal for a wide range of applications, including industrial systems, embedded computers, and communication infrastructure.

Key Features

• Real-Time Clock (RTC): The DS1286 incorporates a full-featured RTC, providing precise time and date information with leap year compensation up to the year 2100. It includes seconds, minutes, hours, day, date, month, and year data, ensuring comprehensive timekeeping capabilities.
• Watchdog Timer: A built-in watchdog timer improves system reliability by initiating a system reset if the microprocessor or microcontroller fails to stroke the watchdog within a preset time interval. This feature is crucial for mission-critical applications where continuous operation is essential.
• Battery Backup: With an integrated lithium energy cell, the DS1286 maintains timekeeping and RAM data for over 10 years in the absence of external power, making it an excellent choice for systems that require data retention during power loss.
• RAM: The device includes 114 bytes of general-purpose, battery-backed, nonvolatile (NV) RAM, offering storage for critical data that must be preserved during power outages.
• Programmable Alarms: Programmable time-of-day alarms and an interrupt output provide additional functionality, enabling scheduled tasks and system alerts.
• Package: The DS1286 is available in a 24-pin DIP (Dual In-line Package) or EDIP (Extended DIP), suitable for through-hole mounting, which allows for easy integration into a variety of system designs.

Applications

The DS1286 Watchdog Timekeeper is used in environments that demand high reliability and long-term performance. Its primary applications include:

• Industrial control systems
• Embedded systems
• Utility meters
• Network servers and routers
• POS terminals

Maxim Integrated's commitment to quality and innovation ensures that the DS1286 Watchdog Timekeeper is a reliable choice for maintaining accurate time and system integrity across a broad range of demanding applications.