Maxim Integrated DS1338U-33+ Real-Time Clock

The DS1338U-33+ is a highly integrated, full-featured real-time clock (RTC) module from Maxim Integrated, designed to provide precise time and date information for a wide range of applications. This compact and efficient device operates over a wide voltage range and incorporates a battery input, which ensures that timekeeping is maintained even when the main power is lost.

Key features of the DS1338U-33+ include:

• Accuracy: Maintains time with high precision, including seconds, minutes, hours, day, date, month, and year information. The accuracy of the device is complemented by automatic leap year compensation valid up to the year 2100.
• Interface: The device communicates through an I²C serial bus, ensuring easy integration with a microcontroller or other I²C-compatible components.
• Low Power Consumption: Designed for energy-sensitive applications, the DS1338U-33+ operates in a low-power mode, which significantly extends battery life when running on backup power.
• Battery Backup Input: It includes a battery input pin that automatically switches to the backup supply when the main power fails, preserving timekeeping with minimal current draw.
• Trickle-Charge Capability: The RTC has an integrated trickle-charge circuit that can be used to charge a backup battery, ensuring continuous operation over extended periods.
• Small Footprint: Housed in an 8-pin µSOP package, the DS1338U-33+ saves valuable board space and is suitable for space-constrained applications.

Applications for the DS1338U-33+ are diverse and include:

• Data loggers
• Telematics
• Industrial time tracking
• Handheld devices
• Medical devices
• Utility meters

Overall, Maxim Integrated's DS1338U-33+ RTC module offers a robust and reliable solution for timekeeping in electronic systems, ensuring accuracy and stability in a variety of conditions and applications.