The Nordic nRF51422 is a powerful, highly flexible multi-protocol SoC ideally suited for ANT/ANT+, Bluetooth low energy and 2.4GHz proprietary ultra low-power wireless applications. The nRF51422 is built around a 32-bit ARM® Cortex™ M0 CPU with 256KB flash + 16KB RAM. The embedded 2.4GHz transceiver supports ANT as well as Bluetooth low energy and proprietary 2.4GHz operation, where the nRF51422 is on-air-compatible with the nRF24L and nRF24AP series products from Nordic Semiconductor. 
nRF51422 also incorporates a rich selection of analog and digital peripherals that can interact without CPU intervention through the Programmable Peripheral Interconnect (PPI) system. A flexible 31-pin GPIO mapping scheme allows I/O such as serial interfaces, PWM and quadrature demodulator to be mapped to any device pin as dictated by PCB requirements. This enables complete design flexibility associated with pin-out location and function.
nRF51422 requires a single power supply and gives the user the option of using on chip linear regulators giving a supply range of 1.8-3.6V, a direct 1.8V mode and a on chip DCDC buck converter giving a supply range of 2.1-3.6V. The use of the DC-DC converter can be dynamically controlled during run time and enables nRF51422 to operate at radio peak currents below 10mA @ 3V supply (TX @ 0dBm & RX).
The nRF51422 is available in a 48-pin 6x6 QFN package.
nRF51 SDK provides extensive software support for both ANT and Bluetooth low energy applications.
  • Mobile phone accessories
  • Personal Area Networks
  • Sports & Fitness sensor & monitor devices
  • Health sensor & monitor devices
  • Logistics and tracking applications
  • Home/Industrial automation
  • Environmental sensors
  • Active RFID
  • Industrial and commercial sensors
  • Audience response systems


  • Single chip, highly flexible, 2.4GHz multi-protocol device
  • 32-bit ARM Cortex M0 CPU core
  • 256KB flash 16KB RAM
  • Embedded ANT protocol stack (S210)
  • Thread-safe and run-time protected
  • 3 data rates (2Mbs/1Mbs/250kBs)
  • On-air-compatible with nRF24L series
  • +4dBm to -20dBm output power
  • PPI system for maximum power-efficient applications and code simplification
  • Flexible power management features
  • Configurable I/O mapping for analog and digital I/O

nRF51422 Resources

Nordic nRF51 nRF51-IoT-SDK-PB nRF51 IoT SDK Product Brief
Nordic nRF51 nRF51 IoT SDK Product Brief
Nordic Product Brief
Nordic nRF51422 Product Brief
Nordic nRF51 Revision Cahnges
Nordic nRF51 Cahnges

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