PCF8563T Real Time Clock Module Key benefits Precise timekeeping with about ±3 minutes per year and wide voltage compatibility of 1.0 to 5.5 V. Automatic temperature compensation improves clock stability across industrial environments and applications. I2C interface enables straightforward communication with common microcontrollers. Integrated features Integrated alarm and timer functions for scheduling and automation needs. Engineered with pre loaded sample codes and components for plugandplay integration in prototyping and production environments. Performance and compatibility reliability Real Time Clock Module designed for accurate time synchronization in automation systems, data loggers, and home devices. Outperforming the DS3231 in RTC performance while consuming minimal power for microcontroller projects. Use scenarios Industrial automation: timesynced control and scheduled tasks in automated systems. Data logging: reliable time stamping for events in data loggers. Home devices and consumer electronics: precise scheduling and timebased triggers in prototypes and production devices.