1.S3231 is available in commercial and industrial temperature ranges and is available in a 16pin 30mm SO case. Stores information seconds, minutes, hours, day of the week, date, and year. For months less than 31 days, month end will be automatically adjusted, including adjustments for leap years. 2.The first monitor pin can be used as a manual input to generate an MP reset. In addition to its high timing accuracy, Ds3231 also has multiple features, additional capabilities and options expand system hosts. Device integrates a very digital temperature sensor that can be accessed via I2c interface (as well as time). Accuracy of this temperature sensor is ±3°C. 3.The DS3231 is a costeffective, highprecision I2c realtime clock () with integrated temperaturecompensated quartz oscillator (Tcxo) and quartz. Device has a battery input to maintain timing when mains power is interrupted. Integrated crystals improve device life and reduce number of components in production lines. 4.Working format of the watch can be 24 hour or 12 hour format with /Am/Pm display. Provides programmable calendar alarms and a programmable square wave output. Address and data are transmitted serially via bidirectional I2c bus. A temperaturecompensated voltage reference and comparator circuit monitors Vcc status, detects power supply failures, provides a reset output, and automatically switches to emergency power when needed.