This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down list at the bottom of the left panel and select the desired version.

maxim,ds3231 (on i2c bus)

Vendor: Maxim Integrated Products


Maxim DS3231 I2C RTC/TCXO


Properties not inherited from the base binding file.






GPIO specifier that controls power to the device.

This property should be provided when the device has a dedicated
switch that controls power to the device.  The supply state is
entirely the responsibility of the device driver.

Contrast with vin-supply.



Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.

This property should be provided when device power is supplied
by a shared regulator.  The supply state is dependent on the
request status of all devices fed by the regulator.

Contrast with supply-gpios.  If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.



32 KiHz open drain output

The DS3231 defaults to providing a 32 KiHz square wave on this
signal.  The driver does not make use of this, but applications
may want access.



interrupt/square wave open drain output

The DS3231 uses this signal to notify when an alarm has triggered,
and also to produce a square wave aligned to the countdown chain.
Both capabilities are used within the driver.  This signal must be
present to support time set and read operations that preserve
sub-second accuracy.