RV-8803-C7 is an high accuracy, ultra low power Real-Time-Clock Module with embedded 32.768 kHz Crystal. High accuracy, high stability is achieved by factory calibrated, temperature compensated DTCXO and results to time-accuracy of ± 3.0 ppm across the temperature range from -40°C to +85°C.

Standard Clock & Calendar function tracks second, minute, hour in 24-hour format, year and leap -year flags. Beside standard RTC function like Timer & Alarm, it includes integrated Temperature Sensor, Time Stamp Event Input and User RAM and offers I²C-bus (2-wire Interface).


  • Factory calibrated temperature compensation
  • Very high Time Accuracy (best in class). 
    • ±1.5 ppm 0 to +50°C
    • ±3.0 ppm -40 to +85°C
    • ±7.0 ppm +85 to +105°C
  • Low power consumption: 240 nA @ 3 V. (best in class)
  • Wide operating voltage range: 1.5 V to 5.5 V.
  • Aging compensation with OFFSET value
  • Counters for hundredths of seconds, seconds, minutes, hours, date, month, year and weekday
  • I²C-bus interface (up to 400 kHz)
  • Periodic Countdown Timer Interrupt function
  • Periodic Time Update Interrupt function (seconds, minutes)
  • Alarm Interrupts for weekday or date, hour and minute settings
  • External Event Input with Interrupt and Time Stamp function
  • Programmable Clock Output for peripheral devices (32.768 kHz, 1024 Hz, 1 Hz) with enable/disable function (CLKOE)
  • Operating temperature range: -40 to +105°C
  • Ultra small and compact C7 package size,
  • Register compatible with Epson RX-8803SA/LC
  • Automotive qualification according to AEC-Q200 available

Block Diagram


The RV-8803-C7 RTC meets the requirements:
Lowest power, highest precision in smallest package

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


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