NRF51822
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The NRF 51822 BLE 4.0 Bluetooth Module Wireless Low-power Development Board is a versatile wireless module optimized for ultra-low power wireless applications. It utilizes the nRF 51822, which is a multiprotocol Bluetooth® 4.0 low energy/2.4 GHz RF SoC developed by Nordic Semiconductor.
Built around the nRF 51822 SoC, the Core51822 wireless module provides an easy-to-use interface for developers who want to incorporate Bluetooth connectivity into their projects. This module is ideal for wireless sensors, health and fitness trackers, smart home automation, and more.
One of the standout features of the nRF 51822 is its ultra-low power consumption. With less than 10 µA power consumption in sleep mode, the nRF 51822 can operate for several years on a single coin cell battery.
Designed to be user-friendly and integrate seamlessly with existing projects, the Core51822 module includes all necessary components, such as an onboard antenna, voltage regulator, and crystal oscillator. Additionally, it has several input and output pins that can be used to connect to other devices and sensors, making it a versatile option for various applications.
1 x NRF51822
|
Frequency band |
2.4GHz ISM ( 2.40000 – 2.4835GHz) |
|
On-air data rate |
250 kbps, 1 Mbps or 2 Mbps |
|
Modulation |
GFSK |
|
Output power |
Programmable: +4 to -20dBm in 4dB steps |
|
Sensitivity |
-92.5dBm Bluetooth low energy -96dBm at 250kb -90dBm at 1Mbs -85dBm at 2Mbs |
|
Radio current consumption LDO at 1.8V |
16mA – TX at +4dBM output power 10.5mA – TX at 0dBm output power 13mA – RX at 1Mbs |
|
Radio current consumption DC-DC at 3V |
10.5mA – TX at +4dBm output power 8.1mA – TX at 0dBm output power 9.5mA – RX at 1Mbs |
|
Microcontroller |
32-bit ARM Cortex M0 |
|
Program Memory |
256kB Flash |
|
RAM |
16kB |
|
Oscillators |
16MHz crystal oscillator 16MHz RC oscillator 32kHz crystal oscillator 32kHz RC oscillator (±250 ppm) |
|
System current consumption |
420nA – No RAM retention 530nA - 8k RAM retention 2?A – All peripherals in IDLE mode |
|
Hardware Security |
128-bit AES ECB/CCM/AAR co-processor |
|
GPIO |
31 configurable |
|
Digital I/O |
X2 Hardware SPI master 2X 2-wire master UART Quadrature demodulator |
|
Peripherals |
10-bit ADC RNG Temperature sensor RTC |
|
PPI |
16-channel |
|
Voltage regulator |
LDO (1.8 to 3.6V), LDO bypass (1.75 to 1.95V) Buck DC/DC (2.1 to 3.6V) |
|
Timers/counters |
2 x 16 bit, 1 x 24bit, 2 x 24bit, RTC |
|
Package options |
RoHS compliant 48-pin 6x6 QFN |
Frequency band
2.4GHz ISM ( 2.40000 – 2.4835GHz)
On-air data rate
250 kbps, 1 Mbps or 2 Mbps
Modulation
GFSK
Output power
Programmable: +4 to -20dBm in 4dB steps
Sensitivity
-92.5dBm Bluetooth low energy -96dBm at 250kb -90dBm at 1Mbs -85dBm at 2Mbs
Radio current consumption LDO at 1.8V
16mA – TX at +4dBM output power 10.5mA – TX at 0dBm output power 13mA – RX at 1Mbs
Radio current consumption DC-DC at 3V
10.5mA – TX at +4dBm output power
8.1mA – TX at 0dBm output power
9.5mA – RX at 1Mbs
Microcontroller
32-bit ARM Cortex M0
Program Memory
256kB Flash
RAM
16kB
Oscillators
16MHz crystal oscillator
16MHz RC oscillator
32kHz crystal oscillator 32kHz RC oscillator (±250 ppm)
System current consumption
420nA – No RAM retention 530nA - 8k RAM retention 2?A – All peripherals in IDLE mode
Hardware Security
128-bit AES ECB/CCM/AAR co-processor
GPIO
31 configurable
Digital I/O
X2 Hardware SPI master 2X 2-wire master UART Quadrature demodulator
Peripherals
10-bit ADC RNG Temperature sensor RTC
PPI
16-channel
Voltage regulator
LDO (1.8 to 3.6V), LDO bypass (1.75 to 1.95V) Buck DC/DC (2.1 to 3.6V)
Timers/counters
2 x 16 bit, 1 x 24bit, 2 x 24bit, RTC
Package options
RoHS compliant 48-pin 6x6 QFN
The nRF51822 is a versatile System on Chip (SoC) engineered for Bluetooth Low Energy and 2.4 GHz proprietary wireless applications, offering ultra-low power consumption. It integrates a 32-bit ARM Cortex-M0 CPU, 256/128 KB flash, and 32/16 KB RAM. This single-chip solution is an effective multi-protocol solution for ULP wireless applications.
The nRF51802 is a cost-effective alternative to the nRF51822, with comparable features but slightly reduced performance, including 2 dB less RX sensitivity and marginally higher RX and TX peak currents. The nRF51822 is an established chip in its third edition, while the nRF51802 is a lower-cost variant with a weaker radio and higher current consumption. Both chips are multiprotocol SoCs developed for Bluetooth Low Energy applications.
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