RTC Ds3231SN
The DS3231SN is an extremely accurate, I2C-interfaced real-time clock (RTC) built around a high-precision Temperature-Compensated Crystal Oscillator (TCXO) and integrated crystal housed in a robust SOIC-16 package. Operating across a flexible voltage range, the device maintains exceptional timekeeping precision—accurate to within ±2 parts per million from 0°C to +40°C—by automatically compensating for frequency shifts induced by ambient temperature variations. The integrated circuitry tracks complete calendar information including seconds, minutes, hours, day, date, month, and year, featuring valid leap-year compensation up to the year 2100, two programmable time-of-day alarms, and a selectable 1Hz square-wave output. Equipped with a dedicated backup supply input that seamlessly transitions power to maintain continuous operation during primary system shutdowns, the DS3231SN serves as an essential, high-reliability timing solution for data loggers, industrial automation systems, timestamped IoT nodes, and precision embedded electronics.
