• Core

  Cortex-M0+, 48 MHz

• Family

  SAMR21 Series

• Sub-Family

  ATSAMR21E

• CMSIS Pack

  SAMR21_DFP

The Microchip SAM R21 is a series of feature-rich, extremely low-power 2.4GHz wireless Cortex M0+MCUs that are designed for industrial and consumer wireless applications, either running proprietary communication stacks or solutions compliant to the IEEE 802.15.4 standard.