nRF51822
ULP wireless system-on-chip
The nRF51822 is a powerful multi-protocol 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 flash + 16kB RAM memory. The nRF51822
supports Bluetooth® low energy and 2.4 GHz protocol stacks.
Timers / Counters
APB bus
AHB Lite bus
256kB
Flash
Analog I/O
Digital I/O
System Peripherals
Processor
16 MHz 32-bit
ARM Cortex-M0 CPU
Multi-protocol Bluetooth Low Energy and
2.4GHz proprietary system-on-chip
KEY FEATURES
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Multi-protocol 2.4GHz radio
3
2-bit ARM Cortex M0 processor
2
56kB flash/16kB RAM
S
oftware stacks available as downloads
P
in compatible with other nRF51xxx series devices
A
pplication development independent from protocol stack
F
ully on-air compatible with nRF24L-series
P
rogrammable output power from +4dBm to -20dBm
R
SSI
R
AM mapped FIFOs using EasyDMA
D
ynamic on air payload length up to 256 Bytes
F
lexible and configurable 31 pin GPIO
P
rogrammable Peripheral Interface – PPI
S
imple ON/OFF global power modes
F
ull set of digital interfaces including: SPI/2-wire/UART
1
0-bit ADC
1
28-bit AES ECB/CCM/AAR co-processor
Q
uadrature demodulator
L
ow cost external crystal 16MHz ± 40ppm
L
ow power 16MHz crystal and RC oscillators
U
ltra low-power 32kHz crystal and RC oscillators
W
ide supply voltage range (1.8 V to 3.6 V)
O
n-chip DC/DC buck converter
I
ndividual power management for all peripherals
P
ackage options: 48-pin 6x6 QFN
16kB
RAM
GPIO
Power
supply
Radio
Multi-protocol 2.4GHz
Oscillators
Lower power and higher performance
The nRF51822 uses the 32-bit ARM Cortex M0 MCU, together
with extensive flash availability, 256kB in total, with 128kB
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 -92.5dBm for Bluetooth low energy.
APPLICATIONS
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Bluetooth Smart applications
M
obile phone accessories
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
Smart RF tags for tracking and social interaction
Audience response system
Intelligent domestic appliances
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. Developers can concentrate with confidence
on what they do best - developing applications.
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.
S110 protocol stack
The nRF51822 is complemented by
the S110 Software stack. The S110
is a complete Bluetooth low energy
stack supporting the peripheral
and broadcaster GAP roles. It offers
GATT/GAP and L2CAP APIs to the
application. The S110 protocol stack
can be downloaded along with adopted
Bluetooth low energy profiles from
Nordic Semiconductor.
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
-92.5dBm 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
8.1mA – TX at 0dBm output power
9.5mA – RX at 1Mbs
32-bit ARM Cortex M0
256kB Flash
16kB
16MHz crystal oscillator
16MHz RC oscillator
32kHz crystal oscillator
32kHz RC oscillator (±250 ppm)
420nA – No RAM retention
530nA - 8k RAM retention
2µA – 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
Radio current
consumption LDO
at 1.8V
Radio current
consumption
DC-DC at 3V
Microcontroller
Program Memory
RAM
Oscillators
Application code
Bluetooth
Low Energy
Protocol
Stack
Gazell
Protocol
Stack
System current
consumption
Hardware Security
GPIO
Digital I/O
SoC
Development tools
Nordic Semiconductor provides a complete range of hardware
and software development tools for the nRF51 series devices. For
more information contact us.
Peripherals
PPI
RELATED PRODUCTS
nRF6700
nRF51822-DK
nRF51422
nRFgo Starter Kit
nRF51822 Develop Kit
ANT multi-protocol SoC
Voltage regulator
Timers/counters
Package options
WORLD WIDE
OFFICE LOCATIONS
Headquarters:
Trondheim, Norway
Tel: +47 72 89 89 00
TRONDHEIM,
NORWAY
OSLO, NORWAY
SAN JOSE, USA
SEOUL, KOREA
TOKYO, JAPAN
For more information
Visit www.nordicsemi.com for the complete prod-
uct specification about this and any other wireless
ULP products.
About Nordic Semiconductor
Nordic Semiconductor is a fabless semiconductor
company specializing in ULP short-range wireless
communication. Nordic is a public company listed
on the Norwegian stock exchange.
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