The DS1339U-33+ is a highly integrated real-time clock (RTC) from Maxim Integrated, designed to provide precise time and date information for a wide range of applications. This compact, surface-mount device is equipped with a built-in crystal oscillator, which ensures high stability and accuracy.

With an operating voltage range of 2.3V to 5.5V, the DS1339U-33+ is versatile and suitable for use in various systems, including portable devices where power efficiency is critical. The device also features a trickle-charge capability that allows for a backup energy source, such as a small coin cell or supercapacitor, to maintain timekeeping when main power is unavailable.

The DS1339U-33+ offers a simple I²C interface for easy integration into microcontroller-based systems. It provides seconds, minutes, hours, day, date, month, and year information, with automatic leap year compensation valid up to the year 2100. Additionally, it includes two programmable time-of-day alarms and a programmable square-wave output, making it an excellent choice for scheduling and time-sensitive tasks.

This RTC module is housed in an 8-pin µSOP package, ensuring a minimal footprint on the PCB. The DS1339U-33+ also features an industrial temperature range of -40°C to +85°C, making it reliable in various environmental conditions.

Key features of the DS1339U-33+ include:

• Highly accurate timekeeping with built-in crystal oscillator
• Low power consumption suitable for battery-powered applications
• Trickle-charge capability for backup power
• I²C serial interface for straightforward integration
• Automatic leap year compensation
• Dual programmable alarms and square-wave output
• Compact 8-pin µSOP packaging
• Wide operating temperature range for robust performance

The DS1339U-33+ is an ideal solution for embedded systems, consumer electronics, office automation, telecommunications, and other applications requiring reliable timekeeping. Maxim Integrated's commitment to quality ensures that this RTC will provide long-term, accurate timekeeping in your products.