Low-Power RTC module needs only 40nA

February 21, 2018 // By Christoph Hammerschmidt
The Real-time Clock Module RV-3028-C7 from Micro Crystal AG sets the new benchmark for lowest power consumption: 40 nA at a supply 3 V. The high accuracy of ±1 ppm at room temperature eliminates any calibration during manufacturing.

The tiny package of just 3.5 x 1.5 x 0.8 mm combines the quartz crystal with the RTC circuit, offering also an integrated battery-back-up switch. The extreme low power consumption allows using MLCC capacitors to cover the back-up time. Together with an event detection input it features all the prerequisites for Wearables, Medical Healthcare and power sensitive IoT applications.

  • Industries lowest current consumption of only 40 nA at 3 V supply 
  • Factory calibrated time reference ±1.0 ppm at 25°C
  • Integrated 32.768 kHz Quartz Crystal
  • Battery back-up switch with trickle charge ideal also for MLCC and Supercap 
  • Wide voltage range 1.2 to 5.5V
  • Ultra-miniature ceramic SMD package: 3.2 x 1.5 x 0.8 mm
  • Provides year, month, date, weekday, hours, minutes and seconds
  • 32 bit Unix time counter e.g. for security code calculations 
  • I²C interface 400 kHz

More information:  http://www.microcrystal.com/index.php/products/real-time-clocks

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