RV-8564-C2 is a CMOS real-time clock / calendar optimized for low power consumption. A programmable clock
output, interrupt output and voltage low detector are also provided. All addresses and data are transferred over an I²C-bus interface for communication with a host controller. The Address Pointer is incremented automatically after each written or read data byte.


  • Low power consumption: 250 nA @ 3 V.
  • Wide operating voltage range: 1.2 V to 5.5 V.
  • Time accuracy: ±20 ppm @ 25°C.
  • Operating temperature: -40 to +85°C.
  • Low voltage detection
  • Provides year, month, date, weekday, hours, minutes and seconds.
  • Alarm and timer functions.
  • Clock output frequencies: 32.768 kHz, 1024 Hz, 32 Hz, 1 Hz.
  • I²C-bus interface: 400 kHz.
  • Automotive qualification according to AEC-Q200 available.

Block Diagram


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


Ordering Information