【High-precision chip】Equipped with high-precision RTC DS3231 chip, I2C bus.
【RTC equipped with battery】Support CR1220 button battery.
【Raspberry Pi Connector】Used to connect Raspberry Pi Pico, stackable design.
Raspberry Pi Pico header supports Raspberry Pi Pico series. Onboard high precision RTC chip DS3231, with backup battery holder and Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100. Optional format: 24-hour OR 12-hour with an AM/PM indicator.
1. DS3231: high precision RTC chip, I2C bus
2. RTC backup battery: supports CR1220 button cell
3. Power indicator: enabled by soldering a 0Ω resistor on the jumper, disabled by default
4. Raspberry Pi Pico header: for attaching to Raspberry Pi Pico, stackable design