Micro Crystal’s RV-3028-C7 real-time clock module sets a benchmark for lowest power consumption: 40 nA at a supply voltage of 3V. Accuracy is ±1 ppm at room temperature, eliminating the need for calibration during manufacturing. The module measures 3.5 mm x 1.5 mm x 0.8 mm and combines the quartz crystal with the RTC circuit. It also integrates a battery-back-up switch. Features include:
- 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
For more insights, checkout the RV-3028-C7datasheet collection