:orphan:

.. title:: CONFIG_SOC_ATMEL_SAM3X_EXT_SLCK

.. kconfig:: CONFIG_SOC_ATMEL_SAM3X_EXT_SLCK

CONFIG_SOC_ATMEL_SAM3X_EXT_SLCK
###############################

*Atmel SAM3 to use external crystal oscillator for slow clock*

*Atmel SAM3 to use external crystal oscillator for slow clock*

Type: ``bool``

Help
====

.. code-block:: none

    Says y if you want to use external 32 kHz crystal
    oscillator to drive the slow clock. Note that this
    adds a few seconds to boot time, as the crystal
    needs to stabilize after power-up.

    Says n if you do not need accurate and precise timers.
    The slow clock will be driven by the internal fast
    RC oscillator running at 32 kHz.

Help
====

.. code-block:: none

    Says y if you want to use external 32 kHz crystal
    oscillator to drive the slow clock. Note that this
    adds a few seconds to boot time, as the crystal
    needs to stabilize after power-up.

    Says n if you do not need accurate and precise timers.
    The slow clock will be driven by the internal fast
    RC oscillator running at 32 kHz.

Direct dependencies
===================

(\ :kconfig:`SOC_SERIES_SAM3X <CONFIG_SOC_SERIES_SAM3X>` && \ :kconfig:`SOC_FAMILY_SAM <CONFIG_SOC_FAMILY_SAM>`) || (\ :kconfig:`SOC_SERIES_SAM3X <CONFIG_SOC_SERIES_SAM3X>` && \ :kconfig:`SOC_FAMILY_SAM <CONFIG_SOC_FAMILY_SAM>`)

*(Includes any dependencies from ifs and menus.)*

Defaults
========

No defaults. Implicitly defaults to ``n``.

Kconfig definitions
===================



At ``<Zephyr SoC>/arm/atmel_sam/sam3x/Kconfig.soc:26``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:38`` → ``<Zephyr SoC>/Kconfig:15`` → ``<BuildDir>/kconfig/Kconfig.soc.arch:2`` → ``<Zephyr SoC>/arm/atmel_sam/Kconfig:17``

Menu path: (Top) → Hardware Configuration

.. code-block:: kconfig

    config SOC_ATMEL_SAM3X_EXT_SLCK
    	bool "Atmel SAM3 to use external crystal oscillator for slow clock"
    	depends on SOC_SERIES_SAM3X && SOC_FAMILY_SAM
    	help
    	  Says y if you want to use external 32 kHz crystal
    	  oscillator to drive the slow clock. Note that this
    	  adds a few seconds to boot time, as the crystal
    	  needs to stabilize after power-up.
	  
    	  Says n if you do not need accurate and precise timers.
    	  The slow clock will be driven by the internal fast
    	  RC oscillator running at 32 kHz.

----

At ``<Zephyr SoC>/arm/atmel_sam/sam3x/Kconfig.soc:26``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:38`` → ``<Zephyr SoC>/Kconfig:18`` → ``<Zephyr SoC>/arm/atmel_sam/Kconfig:17``

Menu path: (Top) → Hardware Configuration

.. code-block:: kconfig

    config SOC_ATMEL_SAM3X_EXT_SLCK
    	bool "Atmel SAM3 to use external crystal oscillator for slow clock"
    	depends on SOC_SERIES_SAM3X && SOC_FAMILY_SAM
    	help
    	  Says y if you want to use external 32 kHz crystal
    	  oscillator to drive the slow clock. Note that this
    	  adds a few seconds to boot time, as the crystal
    	  needs to stabilize after power-up.
	  
    	  Says n if you do not need accurate and precise timers.
    	  The slow clock will be driven by the internal fast
    	  RC oscillator running at 32 kHz.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*