NXP实时时钟在电源功耗上创造了新纪录 NXP ultra-low-power RTC with electronic frequency tuning PCF2123 NXP Real-time clock sets new record in power efficiency This compact, highly efficient real-time clock (RTC) cuts power demand in half. It fits nearly anywhere, can be powered by a very small battery cell or a small super-cap, and performs vital functions like time keeping, process control, and other time-critical tasks. Key features The NXP PCF2123 is an industry-leading CMOS RTC and } 32.768-kHz quartz crystal calendar optimized for low power consumption. It opera……