Maxim Integrated DS1339BU+T Real-Time Clock

The DS1339BU+T is a highly integrated real-time clock (RTC) from Maxim Integrated, designed for applications requiring precise timekeeping and data management. This RTC device offers a full binary-coded decimal (BCD) clock/calendar with 56 bytes of NV SRAM. The clock/calendar functionality includes seconds, minutes, hours, day, date, month, and year information, with automatic adjustments for leap years up to the year 2100.

One of the standout features of the DS1339BU+T is its I2C serial interface, which facilitates simple integration with a wide range of microcontrollers and processors. This interface, along with the low power consumption and wide operating voltage range of 2.3V to 5.5V, makes the DS1339BU+T an excellent choice for battery-powered applications, embedded systems, and portable devices.

The device is equipped with two programmable time-of-day alarms, adding to its versatility. These alarms can be set to trigger on a specific second, minute, hour, day, or date, providing users with flexibility in scheduling and time-based events. Additionally, the DS1339BU+T features a programmable square-wave output, which can be utilized for various purposes, including timing, clock reference, or as an interrupt signal for waking up sleeping systems.

For reliability and data integrity, the DS1339BU+T includes an integrated crystal oscillator and an automatic power-fail switch-over to a backup supply, ensuring the clock continues to run and the data remains protected during main power loss. The device's 56 bytes of nonvolatile SRAM offer additional storage for critical data that must be preserved during power outages.

The DS1339BU+T comes in a compact 8-pin µSOP package, making it an ideal space-saving solution for modern electronic designs. Whether used in handheld devices, consumer electronics, industrial controllers, or communication equipment, the DS1339BU+T from Maxim Integrated provides reliable and accurate timekeeping with the added benefits of alarms and additional memory.

For detailed technical specifications, application notes, and support documentation, designers and engineers are encouraged to visit Maxim Integrated's official website or contact their support team.