DS3231 Etremel Accrate I 2CInterate RTCTCXOCrstal
https://www.analog.com/media/en/technical-documentation/data-sheets/DS3231.pdf
WEBBenefits and Features. Highly Accurate RTC Completely Manages All Timekeeping Functions. 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. Accuracy ±2ppm from 0°C to +40°C. Accuracy ±3.5ppm from -40°C to +85°C.
DA: 71 PA: 70 MOZ Rank: 62