The DS1511W is a high-performance, low-power real-time clock (RTC) with a full binary-coded decimal (BCD) clock/calendar and 128 bytes of static RAM. Manufactured by Maxim Integrated, a leader in analog and mixed-signal engineering, this RTC is designed to provide a precise time and date reference for embedded systems, with the added benefit of battery backup to maintain timekeeping in the event of a power failure.

Key Features

• Fully Integrated RTC: The DS1511W incorporates a complete RTC, which includes hours, minutes, seconds, day, date, month, and year information. The accuracy of the clock is maintained within ±1 minute/month at 25°C.
• Automatic Backup: With an integrated lithium energy source and automatic power-fail detect and switch circuitry, the DS1511W ensures that timekeeping continues uninterrupted during power outages.
• Memory Storage: The device includes 128 bytes of user-accessible battery-backed nonvolatile (NV) RAM, allowing for storage of critical data that must be preserved during power loss.
• Y2K Compliance: The DS1511W is fully compliant with Y2K and leap year corrections, ensuring reliable date information.
• Watchdog Timer: An onboard watchdog timer can be configured to reset an unresponsive system, enhancing reliability and system integrity.
• Programmable Alarm: The DS1511W features a programmable alarm that can be set to a specific time and date, providing a useful interrupt for time-sensitive tasks.
• Simple Integration: Designed for easy integration into a variety of systems, the DS1511W is available in a 28-pin EDIP or 24-pin SO package compatible with surface-mount technology.

Applications

The DS1511W is ideal for a wide range of applications where accurate timekeeping is paramount. This includes:

• Embedded systems
• Industrial controllers
• Point-of-sale (POS) systems
• Network servers
• Telecommunications equipment
• Medical devices

In summary, the DS1511W from Maxim Integrated is a versatile and reliable RTC solution, providing not only the basic features of time and date but also additional functionalities such as NV RAM storage, watchdog timer, and programmable alarm, making it an invaluable component in any time-critical application.