DS3231 RTC

Specification:

• DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.

• The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping.

• Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.

• The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package.
  RTC maintains seconds, minutes, hours, day, date, month, and year information.

• Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year.

• The clock operates in either the 24 hours or band / AM / PM indication of the 12-hour format.

• Provides two configurable alarm clock and a calendar can be set to a square wave output.

• Address and data are transferred serially through an I2C bidirectional bus.

• A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply.

• In addition, / RST pin is monitored as generating ?P reset manually.

• Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options.

• The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time).