nRF51822System on Chip

Bluetooth Low Energy and 2.4 GHz SoC

The nRF51822 is a general purpose, ultra-low power SoC ideally suited for Bluetooth® Low Energy and 2.4 GHz proprietary wireless applications. It is built around the 32-bit ARM® Cortex™-M0 CPU with 256/128 KB flash and 32/16 KB RAM. The flexible 2.4 GHz radio supports Bluetooth Low Energy and 2.4 GHz proprietary protocols, such as Gazell.

It incorporates a rich selection of analog and digital peripherals that can interact directly without CPU intervention through the Programmable Peripheral Interconnect (PPI) system. Flexible GPIOs enables you to connect digital interfaces like SPI Master/slave, TWI Master and UART to any of the 31 GPIOs on the device.

 

Download PDFDownload nRF51822 product brief (PDF)

Download zip fileDownload nRF51x22 QFAx Reference Layout v2.5 (ZIP)

Download zip fileDownload nRF51x22 CxAx Reference Layout v1.4 (ZIP)

Key Features
Bluetooth 4.2
256 KB
Flash
32 KB
RAM
M0
Cortex
+4
dBm
AES
encryption
UART
RTS/CTS
PPI

Relevant SDKs

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nRF5 SDK

The Bluetooth and ANT Software Development Kit

The nRF5 SDK is a high quality, thoroughly tested Software Development Kit to accelerate your software development efforts for the Nordic Semiconductor nRF52 and nRF51 SoC Series. It contains hundreds of useful firmware modules and examples to assist in building your application.
 

nRF5 SDK for AirFuel

The nRF5 SDK for AirFuel supports the nRF52 and nRF51 Series SoCs. It enables the development of AirFuel Alliance-compliant wireless charging applications. There are examples for development of both wireless charging elements: Power Transfer Unit (PTU) and Power Receive Unit (PRU).

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