1374 - SmartNixie RTC Horizontal

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Description:  Battery backed up I2C real time clock module.


  • Uses PCF8563 RTC circuit.
  • Clock trimmed to better than +/-2ppm at 25C.
  • 700nA current consumption enables 200 days of backup with on-board rechargeable battery.
  • PCF8563 has low voltage detector that sets register bit "VL" if battery ever drops below its minimum voltage requirement.
  • Battery charged from module supply voltage.
  • On board 3V regulator for module and battery charging.
  • External I2C interface operating range is 3.0 to 5.5VDC using on-board level shifter.
  • 1pps output can be enabled with I2C command.


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