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@defgroup cpu_samd21 Atmel SAMD10/SAMD20/SAMD21/SAMR21 @ingroup cpu @brief Atmel SAMD1x/SAMD2x Cortex-M0+ MCU specific implementation.

This module contains Atmel SAMD10/SAMD20/SAMD21/SAMR21 specific code and definition.

@see cpu_sam0_common