Timekeeping, CLKOUT and Power Management Application for the PCF2127 TCXO RTC

Timekeeping, CLKOUT and power management Application for the PCF2127 TCXO RTC. The PCF2127 is a CMOS Real Time Clock (RTC) and calendar IC. It has an integrated Temperature Compensated Crystal (Xtal) Oscillator (TCXO) based on an integrated 32.768 kHz tuning fork quartz crystal. The PCF2127 is optimized for very high accuracy and very low power consumption