The RV-8564-C2 is an automotive-qualified Real Time Clock (RTC) module that combines a 32.768 kHz crystal resonator, CMOS oscillator, and RTC IC in a compact SMD ceramic package. It features calendar functions tracking year, month, date, and day of the week with built-in century and leap-year flags, along with clock functions for minutes and seconds in 24-hour format. The module offers programmable alarm, timer, and interrupt functions, low power consumption, precise frequency tolerance, programmable clock-output, and maintains accurate time down to 1.2V. Designed for automotive and clock/timing applications, it provides a reliable solution for timekeeping needs.