The RX8025T-UC Real-time Clock/Calendar with I2C from Epson is a surface mountable DIP (sop-14-208mil) device that operates from a single 5V DC supply. It provides a real-time clock and calendar, supporting both binary and BCD (binary-coded decimal) formats. The device has a built-in oscillator circuit and comes with 32 kHz (32,768 Hz) crystal for frequency stabilization. It is a low power device with a supply current of only 3.4 µA. The device offers versatile functions such as alarm function, daylight saving time, built-in time-zone registers, and an interruption flag for time setting. It is compliant with the RoHS Directive (Restriction on Hazardous Substances) and operates within a temperature range of -40 to 85°C.