Maxim Integrated DS1339U-3 Real-Time Clock

The DS1339U-3 is a compact, highly integrated real-time clock (RTC) from Maxim Integrated that provides a full binary-coded decimal (BCD) clock/calendar with 56 bytes of NV SRAM. This RTC is designed to be a low-power, full-featured timekeeping solution that maintains accurate timekeeping when the main power to the device is interrupted.

Key Features

• Accuracy: The DS1339U-3 maintains an accuracy of ±2ppm from 0°C to +40°C, ensuring precise timekeeping for critical applications.
• Interface: It features an I²C serial interface, which allows for easy integration into existing systems with minimal interfacing requirements.
• Power Management: The device includes an automatic backup switching and battery backup input for continuous timekeeping in the event of primary power failure.
• Low Power: Its low power consumption makes it ideal for battery-powered applications, contributing to extended battery life and reliability.
• Memory: The integrated NV SRAM provides 56 bytes of nonvolatile storage, which can be used to store data that must be preserved during power loss.
• Package: Available in an 8-pin µSOP package, the DS1339U-3 is designed for compact PCB layouts and portable devices.

Applications

The DS1339U-3 is suitable for a wide range of applications, including:

• Handheld devices
• Medical devices
• Industrial systems
• Embedded systems
• Utility meters

Technical Specifications

• Voltage Supply: 2.3V to 5.5V
• Time Format: HH:MM:SS (24-hour format)
• Date Format: YY-MM-DD-dd
• Operating Temperature Range: -40°C to +85°C
• Package Type: 8-pin µSOP

With its comprehensive feature set and robust design, the Maxim Integrated DS1339U-3 RTC is an excellent choice for systems that require reliable timekeeping under varying conditions and minimal power consumption.