Timer Ic

I2C real-time clock (RTC) featuring an inbuilt temperature-compensated crystal oscillator (TCXO) and crystal, the DS3231 is a low-cost device that is remarkably precise. The gadget has a battery input and can continue to retain accurate time even if its primary power source is interrupted. The addition of the crystal resonator improves the instrument's long-term precision and lowers the number of pieces required to produce it. The DS3231 comes in a 16-pin, 300-mil SO box and is supplied in commercial and industrial temperature ranges. The RTC keeps track of information regarding seconds, minutes, hours, days, dates, months, and years. For months with fewer than 31 days, the dates at the end of the month is automatically changed to account for leap years. With an AM/PM indication, the clock may run on either a 12- or 24-hour basis.There are two programmable time-of-day alarms as well as a programmable square-wave output.

I2C bidirectional bus is used to serially transport address and data. A precise temperature-compensated voltage reference and comparator circuit keeps track of VCC's condition to detect power outages, offer a reset output, and, if necessary, switch automatically to the backup source. In addition, the RST pin is watched as a push button input for external reset generation.