Nordic Semiconductor nRF51822 Bluetooth® Low Energy & 2.4GHz Wireless SoC is a powerful, highly flexible multi-protocol SoC ideally suited for Bluetooth® low energy and 2.4GHz ultra low-power wireless applications. The nRF51822 is built around a 32-bit ARM® Cortex™ M0 CPU with 256kB flash + 16kB RAM. The embedded 2.4GHz transceiver supports Bluetooth low energy as well as 2.4GHz operation, where the 2.4GHz mode is on air compatible with the nRF24L series products from Nordic Semiconductor. 
Nordic Semiconductor nRF51822 Bluetooth® Low Energy & 2.4GHz Wireless SoC 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 like 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.
Nordic Semiconductor nRF51822 Bluetooth® Low Energy & 2.4GHz Wireless SoC supports the S110 Bluetooth low energy protocol stack as well as 2.4GHz protocol stacks, including Gazell, both available free of charge in the nRF518 Software Development Kit. nRF51822 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 nRF51822 to operate at radio peak currents below 10 mA @ 3V supply (TX @ 0 dBm & RX).
nRF51822 is available in 6x6mm 48-pin QFN packages and 3.5x3.8mm 64 ball wafer-level chip-scale packages (WLCSP) and either 256k or 128kB Flash size variants.
  • Mobile phone accessories
  • Consumer Electronics (CE) remote controls
  • PC peripherals
  • Sports, fitness and healthcare sensors
  • Toys and electronic games
  • Smart RF tags
  • Intelligent domestic appliances
  • Industrial and commercial sensors

Development Tools

The hardware tools in the nRF51 series tool chain consist of an evaluation kit and a nRFgo compatible development kit, in addition to application specific reference designs.  The software support are split in two major parts: SoftDevices containing wireless protocol stacks; and the nRF51 Software Development Kit (SDK) forming a common code base for all nRF51 devices.

nRF51822 Evaluation Kit - The evaluation kits gives you the lowest cost entry point to development with the nRF51822.

nRF51822 Development Kit - The nRF51822 development kit is nRFgo compatible and enables you to do more advanced development especially when integrating with external circuitry.

nRFgo nRF6700 starter kit - The base for the nRFgo development platform is a starter kit which contains 2 nRFgo motherboards as well as all necessary patch and USB cables for more advanced prototyping.

Software - The nRF51 series are supported by an extensive offering of Software. By using nRF51 devices you get free access to pre-qualified Bluetooth low energy as well as ANT protocol stacks for use in your nRF51 applications.

nRF51 Series Software Development Kit - The nRF51 Software Development kit (SDK) offers you C source code containing Bluetooth low energy and ANT+ device profiles, wireless communication as well as application examples, Nordic Semiconductors proprietary 2.4 GHz stack for human interface devices (Gazell) as well as libraries for all the peripherals found on the nRF51 series SoCs.

Reference Designs

nRFready Smart Remote 2 - Multi-Protocol Advanced Navigation Remote Control Reference Design

nRFready Desktop 2 - Combined Bluetooth low energy (including Bluetooth Smart) and proprietary 2.4GHz wireless mouse and keyboard combo reference design 


  • Single chip, highly flexible, 2.4GHz multi-protocol device
  • 32-bit ARM Cortex M0 CPU core
  • 256KB flash 16KB RAM
  • Supports S110 Bluetooth low energy protocol stack
  • S110 requires 80 kB memory space
  • Thread safe and run-time protected
  • Event driven API
  • On air compatible with nRF24L series
  • 3 data rates (2Mbps/1Mbps/250kbps)
  • +4dBm output power
  • -92.5dBm sensitivity, Bluetooth low energy
  • PPI system for maximum power-efficient applications and code simplification
  • Flexible power management system with automatic power management of each peripheral
  • Configurable I/O mapping for analog and digital I/O

nRF51822 Resources

Nordic nRF51 nRF51-IoT-SDK-PB nRF51 IoT SDK Product Brief
Nordic nRF51 nRF51 IoT SDK Product Brief
Nordic Product Brief
Nordic nRF51822 Product Brief
Nordic nRF51 Revision Cahnges
Nordic nRF51 Cahnges

nRF51822 Products

Loading ...

Previously Viewed Products