NRF51822 Multiprotocol Bluetooth: Schematic, Pinout, and Datasheet

ULP wireless System-on-Chip 

For ULP wireless applications, the nRF51822 is a capable multiprotocol single chip solution. It has Nordic's latest best-in-class performance radio transceiver, as well as an ARM® Cortex™ M0 CPU, 256kB/128kB flash memory, and 32kB/16kB RAM memory. Bluetooth® low energy (previously known as  Bluetooth Smart ) and 2.4 GHz protocol stacks are supported by the nRF51822.

Lower power and higher performance

The nRF51822 is equipped with a 32-bit ARM Cortex  M0 MCU with a large amount of flash memory  (256kB/128kB overall, with 40kB-180kB available for program development). When compared to 8/16-bit platforms, code density and execution speed are significantly higher. The PPI system provides a 16-channel bus for direct and autonomous system peripheral communication without the need for CPU  intervention. This results in predictable latency periods for peripheral-to-peripheral interaction, as well as power savings by leaving the CPU  inactive. The device has two global power modes: ON/OFF, however, all system blocks and peripherals have unique power management controls, allowing for automatic RUN/IDLE switching for system blocks based only on those required/not required to complete certain tasks.

The performance of the nRF51822 is based on the new radio. The radio supports Bluetooth low energy and is backwards compatible with Nordic Semiconductor's nRF24L Series products. The output power can now be scaled in 4dB increments from a maximum of +4dBm to -20dBm. Sensitivity is improved at every level, with sensitivity levels ranging from -96 to -85dBm (depending on data rate), with -93dBm for Bluetooth low energy.

Symbol

Footprint

3D Model

• Multiprotocol 2.4GHz radio

• 32-bit ARM Cortex M0 processor

• 256kB/128kB flash and 32kB/16kB RAM

• Software stacks available as downloads

• Pin compatible with other nRF51 Series devices

• Application development independent from protocol stack

• Fully on-air compatible with nRF24L Series

• Programmable output power from +4dBm to -20dBm

• RSSI

• RAM mapped FIFOs using EasyDMA

• Dynamic on air payload length up to 256 Bytes

• Flexible and configurable 31 pin GPIO

• Programmable Peripheral Interface – PPI

• Simple ON/OFF global power modes

• Full set of digital interfaces including: SPI/2-wire/UART

• 10-bit ADC

• 128-bit AES ECB/CCM/AAR co-processor

• Quadrature demodulator

• Low cost external crystal 16MHz ± 40ppm

• Low power 16MHz crystal and RC oscillators

• Ultra low power 32kHz crystal and RC oscillators

• Wide supply voltage range (1.8 V to 3.6 V)

• On-chip DC/DC buck converter

• Individual power management for all peripherals

• Package options: 48-pin 6x6 QFN/WLCSP, Thin-CSP

Nordic Semiconductor ASA NRF51822-QFAA-R technical specifications, attributes, parameters and parts with similar specifications to Nordic Semiconductor ASA NRF51822-QFAA-R.

• Bluetooth low energy applications

• Wearables

• Beacons

• Appcessories

• Computer peripherals

• CE remote controls for TV, STB and media systems

• Proximity and security alert tags

• Sports- and fitness sensors

• Healthcare and lifestyle sensors

• Game controllers for computers

• Toys and Electronic games

• Domestic/Industrial control and data-acquisition

• Intelligent domestic appliances

Nordic Semiconductor is a fabless semiconductor business that focuses on short-range wireless and low-power cellular  IoT  applications. Nordic developed Bluetooth Low Energy, a widely used wireless technology, and pioneered ultra-low-power wireless. The company's award-winning Bluetooth LE solutions have propelled it to the top of the industry, and  ANT+ , Thread, and  Zigbee  products round out the offering. Nordic's reputation is built on providing cutting-edge wireless technology and development tools that protect designers from the complexities of RF. This philosophy is carried over to Nordic's newest technology, cellular IoT. This  NB-IoT  and  LTE-M  solution, which was launched in 2018 after four years of research, uses cellular infrastructure to extend the IoT.