The RV3028 Real-Time Clock (RTC) Breakout is an ultra-low-power (~100 nA), highly accurate Swiss-made RTC perfect for adding timekeeping functionality to your projects. Featuring an onboard tiny silver oxide battery, it keeps time even when your device is powered off, ensuring continuous and reliable time maintenance.

The breakout board offers a factory-calibrated RTC with an accuracy of 1 second drift per million seconds at 25C, surpassing typical digital watches. It supports both 3.3V and 5V systems with an I2C interface, reverse polarity protection, and a Raspberry Pi-compatible pinout. This module is compatible with all 40-pin Raspberry Pi models, Arduino, and Raspberry Pi Pico boards.

Kit includes:

• RV3028 RTC Breakout board
• 1×5 pin header
• 1×5 right angle socket header

Features:

• RV3028 Real-Time Clock (RTC)
• Ultra-low-power (~100 nA typical current draw)
• 1 second drift per million seconds at 25C
• Silver oxide battery included (1.55V, 8mAh, type 337)
• 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 and all 40-pin Raspberry Pi models
• Compatible with Raspberry Pi Pico with C++/MicroPython libraries

Dimensions: 19x19x4 mm

Software: Use the provided Python library to set and get the time, set periodic timers, and alarms. This breakout is also supported by Raspberry Pi Pico with C++ and MicroPython libraries.

Note: You will need to run the set-time.py example from the library to initially set the time and enable battery backup operation.

Datasheet | Applications manual | Schematic