RV3028 Real-Time Clock (RTC) Breakout

An ultra-low-power highly accurate real-time clock breakout. The RV3028 RTC breakout is perfect for adding timekeeping to your project.

The RV3028 RTC is factory-calibrated, and is quoted to drift by just ±1 second per million seconds.

It has an I2C interface and is 3.3V or 5V compatible.

Specifications

• Ultra-low-power (~100nA typical current draw)
• ±1 second drift per million seconds
• Silver oxide battery included (1.55V, 8mAh, 337 type)
• 3.3V or 5V compatible
• I2C interface (address 0x52)
• Reverse polarity protection
• Raspberry Pi-compatible pinout (pins 1, 3, 5, 7, 9)
• Compatible with Arduino
• Compatible with all 40-pin Raspberry Pi models (Python library)
• Compatible with Raspberry Pi Pico (C++/MicroPython libraries)

Kit includes

• RV3028 RTC Breakout
• 1x5 male header
• 1x5 female right angle header

Software

Pimoroni put together a Python library that you can use with your RV3028 RTC Breakout, and an easy one-line installer to install everything.
Python library allows you to set and get the time (year, month, day, hour, minute, second), set periodic countdown timers with interrupts, and to set one-off or recurring alarms with interrupts.
You can also use this breakout with Raspberry Pi Pico and other RP2040 boards, using C++ or Pirate brand MicroPython.

Note

You'll need to run the set-time.py example the first time that you use your RV3028 RTC breakout to set the time correctly and to enable the clock to run on battery backup!