nRF51822
ULP wireless System-on-Chip
The nRF51822 is a powerful multiprotocol single chip solution
for ULP wireless applications. It incorporates Nordic’s latest
best-in-class performance radio transceiver, an ARM
®
Cortex™
M0 CPU and 256kB/128kB flash and 32kB/16kB RAM memory.
The nRF51822 supports
Bluetooth
®
low energy (formerly known
as Bluetooth Smart) and 2.4 GHz protocol stacks.
Multiprotocol Bluetooth low energy and
2.4GHz proprietary System-on-Chip
KEY FEATURES
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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
Timers / Counters
APB bus
AHB Lite bus
256kB/
128kB
Flash
Analog I/O
Digital I/O
System Peripherals
Processor
16 MHz 32-bit
ARM Cortex-M0 CPU
32kB/16kB
RAM
GPIO
Power
supply
Radio
Multiprotocol 2.4GHz
Oscillators
Lower power and higher performance
The nRF51822 uses the 32-bit ARM Cortex M0 MCU, together with
extensive flash availability, 256kB/128kB in total with 40kB-180kB
available for application development. Code density and execution
speed are considerably greater than for 8/16-bit platforms. The
Programmable Peripheral Interconnect (PPI) system provides
a 16-channel bus for direct and autonomous system peripheral
communication without CPU intervention. This brings predictable
latency times for peripheral to peripheral interaction and power
saving benefits associated with leaving the CPU idle. The device
has 2 global power modes ON/OFF, but all system blocks and
peripherals have individual power management control which
allows for an automatic switching RUN/IDLE for system blocks
based only on those required/not required to achieve particular
tasks.
The new radio forms the basis of the nRF51822’s performance.
The radio supports Bluetooth low energy and is on air compatible
with the nRF24L Series products from Nordic Semiconductor.
Output power is now scalable from a maximum of +4dBm down
to -20dBm in 4dB steps. Sensitivity is increased at every level
and offers sensitivity ranges (dependent on data rate) from -96 to
-85dBm, with -93dBm for Bluetooth low energy.
APPLICATIONS
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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
nRF51822 Product Brief Version 2.5
Easy, fast and safe code development
The nRF51822 offers developers a clean separation between
application code development and embedded protocol stacks. This
means compile, link and run-time dependencies with the embedded
stack and associated de-bugging challenges are removed. The
Bluetooth low energy stack is a pre-compiled binary available from
Nordic Semiconductor, leaving application code to be compiled
stand-alone. The embedded stack interface uses an asynchronous
and event-driven model removing the need for RTOS frameworks.
OTA DFU
The nRF51822 is supported by a Over The Air Device Firmware
Upgrade (OTA-DFU) feature. This allows for in the field updates
of application software and SoftDevices.
Maximum re-use and easy migration
The devices in the nRF51 Series are pin compatible enabling
migration between technologies such as Bluetooth low energy
and ANT with no layout changes. The common HW architecture
ensures that one codebase can be re-used effortlessly between
nRF51 Series devices. Variants in the nRF51 Series enable simple
choices tailoring device selection to desired wireless protocol and
feature requirements with little or no changes.
Application code
Bluetooth
low energy
Protocol
Stack
Gazell
Protocol
Stack
SPECIFICATIONS
Frequency band
On-air data rate
Modulation
Output power
Sensitivity
2.4GHz ISM ( 2.40000 – 2.4835GHz)
250 kbps, 1 Mbps or 2 Mbps
GFSK
Programmable: +4 to -20dBm in 4dB steps
-93dBm Bluetooth low energy
-96dBm at 250kb
-90dBm at 1Mbs
-85dBm at 2Mbs
16mA – TX at +4dBM output power
10.5mA – TX at 0dBm output power
13mA – RX at 1Mbs
10.5mA – TX at +4dBm output power
8.06mA – TX at 0dBm output power
9.7mA – RX at 1Mbs
32-bit ARM Cortex M0
256kB/128kB Flash
32kB/16kB
16MHz crystal oscillator
16MHz RC oscillator
32kHz crystal oscillator
32kHz RC oscillator (±250 ppm)
0.6µA – No RAM retention
1.2µA - 8k RAM retention
2.6µA – All peripherals in IDLE mode
128-bit AES ECB/CCM/AAR co-processor
31 configurable
X2 Hardware SPI master
2X 2-wire master
UART
Quadrature demodulator
10-bit ADC
RNG
Temperature sensor
RTC
16-channel
LDO (1.8 to 3.6V),
LDO bypass (1.75 to 1.95V)
Buck DC/DC (2.1 to 3.6V)
2 x 16 bit, 1 x 24bit, 2 x 24bit, RTC
RoHS compliant 48-pin 6x6 QFN / 3 Ultra-compact
Wafer Level Chip Scale Package options (WLCSP),
Thin-CSP
Radio current con-
sumption LDO at 1.8V
Radio current
consumption
DC-DC at 3V
Microcontroller
Program Memory
RAM
Oscillators
SoC
SoftDevices
The Nordic protocol stacks are known as SoftDevices
and complement the nRF51 Series SoCs. All nRF51
Series are programmable with software stacks
available from Nordic Semiconductor. This brings
maximum flexibility to application development and
allows the latest stack version to be programmed
into the nRF51 Series SoC.
System current
consumption
Hardware Security
GPIO
Digital I/O
nRF51822 compatible SoftDevices
S130
Bluetooth low energy concurrent central/
peripheral/observer/broadcaster stack
Peripherals
Development tools
Nordic Semiconductor provides a complete range of hardware
and software development tools for the nRF51 Series devices.
PPI
Voltage regulator
RELATED PRODUCTS
nRF51 DK
nRF51 Dongle
nRF51422
Development kit for Bluetooth low energy,
ANT and 2.4GHz applications
Bluetooth low energy/ANT/2.4GHz development dongle
ANT/Bluetooth low energy multiprotocol SoC
Timers/counters
Package options
WORLD WIDE
OFFICE LOCATIONS
Headquarters:
Trondheim, Norway
Tel: +47 72 89 89 00
For more information
Visit
www.nordicsemi.com
for the complete
product specification about this and any other
wireless ultra-low power products.
About Nordic Semiconductor
Nordic Semiconductor is a fabless semiconductor
company specializing in ultra-low power short-
range wireless communication. Nordic is a public
company listed on the Norwegian stock exchange.
nRF51822 Product Brief Version 2.5
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