RV-8063-C7 is a CMOS real-time clock/calendar module optimized for low power consumption. An Offset register allows to compensating the frequency deviation of the 32.768 kHz clock. All addresses and data are transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 7 Mbit/s. The register address is incremented automatically after each written or read data byte.
This ultra small RTC module has been specially designed for miniature and cost sensitive high volume applications.


  • Low power consumption: 190 nA @ 3 V.
  • Wide operating voltage range: 0.9 V to 5.5 V.
  • Time accuracy: ±20 ppm @ 25°C.
  • SPI-bus interface: 3-wire, 7 MHz.
  • Operating temperature range: -40 to +85°C.
  • User programmable offset value.
  • Oscillator stop detection.
  • Provides year, month, date, weekday, hours, minutes and seconds.
  • Automatic leap year calculation: 2000 to 2099.
  • Timer and Alarm functions.
  • Clock output frequencies: 32.768 kHz to 1 Hz.
  • Automotive qualification according to AEC-Q200 available.

Block Diagram


  • IoT
  • Metering
  • Industrial
  • Automotive
  • Health Care
  • Wearables, Portables


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