Introduction
The DS3231 Real Time Clock module is used as time synchronization
device in applications where precise timings are essential. The module is
used in digital clocks, computer motherboards, digital cameras, embedded
systems etc.
It is a real time clock with an integrated temperature-compensated crystal
oscillator. There is an on-board battery holder, so that it can maintain
continuous time keeping when the device is not powered from an external
source.
One of the features of the module is that it can operate in 12 hour or 24
hour format and has a AM/PM indication capability.
The module is programmable with two day-time alarms. Alarms can be
programmed via an integrated EEPROM chip which can store alarm data in
internal memory. There is also 32KHz square-wave oscillator output pin,
which can be used to synchronize time with other similar devices.
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