Introduce real-time clock (RTC) functionality to the design using the RTC 2 Click Board™. This add-on board features a low-power Maxim DS1307 serial real-time clock (RTC). It is a full binary-coded decimal (BCD) clock/calendar with a programmable square-wave output signal. The board uses a standard I2C interface for communication with the target host microcontroller. RTC2 Click Board™ has a 3V/230mA lithium battery that works as a backup power supply. The timekeeping function continues even when the power supply status is OFF. Real-Time Clock (RTC) counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap-year clock function with a four-year calendar. It is designed to operate a 5V power supply only. In order to function to a 3.3V system, the user can check to go for RTC Click Board™.
The RTC2 Click Board™ is an ideal option who applications involving real-time clocks, calendars, and programmed alarms.