MEMS-Based Real-Time Clocks

Real-time clock (RTC) ICs with MEMS oscillators offer several advantages over RTC ICs that use crystal-based oscillators. MEMS oscillators are temperature-compensated for high accuracy; they suffer no frequency shifts during board manufacturing and show no aging effects. MEMS oscillators provide improved tolerance to shock and vibration. Also, MEMS-based RTCs offer a much smaller design footprint due to the replacement of a large crystal with a very small MEMS.

RTCs with integrated MEMS oscillator 

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