Devices nRF51 Series nRF51 Series Nordic Semiconductor Devices 9 nRF51422_xxAA Cortex-M0 nRF51422_xxAB Cortex-M0 nRF51422_xxAC Cortex-M0 nRF51801_xxAB Cortex-M0 nRF51802_xxAA Cortex-M0 nRF51822_xxAA Cortex-M0 nRF51822_xxAB Cortex-M0 nRF51822_xxAC Cortex-M0 nRF51824_xxAA Cortex-M0