기능

• Real-time clock (with NV memory), a real-time clock product of Integrated
• Maxim.
• Built-in non-volatile memory for data retention.
• The Clock/Calendar function can display seconds, minutes, hours, days, dates, dates, and years.
• Clocks typically display time in 12 hour or 24 hour format with AM/PM display.
• Some have additional features such as monitoring timers, alarms, and trickle charging facilities for external backup batteries.
• Some devices also include a crystal for the clock oscillator.