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DS3231 Real Time Clock Module for Arduino with I2C Interface

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 Product Description

DS3231 AT24C32 IIC Precision RTC Real Time Clock Memory Module For Arduino

This is a great 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 it still maintains accurate timekeeping.

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

DS3231 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.

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.

RST pin is monitored as generating μP reset manually.

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

Temperature sensor accuracy is ± 3 ° C.

On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply. If the main power fails, the device can continue to provide accurate timing and temperature; performance is not affected. When the main power re-powers or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.

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