DS14285+ [Analog Devices]

The DS14285/DS14287 is a real-time clock with non-volatile RAM control, providing industry-standard clock/calendar functions with additional features for external SRAM non-volatility. It includes seconds, minutes, hours, days, date, month, year with leap year compensation, binary or BCD representation, 12/24-hour clock, daylight saving time option, programmable square-wave output, and interrupt signals. It can be used as a chip or standalone module with embedded lithium battery and crystal.