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Package Includes:
1 x NRF51822
Specifications
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 |
Specifications:
Frequency band
Specifications:
2.4GHz ISM ( 2.40000 – 2.4835GHz)
Specifications:
On-air data rate
Specifications:
250 kbps, 1 Mbps or 2 Mbps
Specifications:
Modulation
Specifications:
GFSK
Specifications:
Output power
Specifications:
Programmable: +4 to -20dBm in 4dB steps
Specifications:
Sensitivity
Specifications:
-92.5dBm Bluetooth low energy -96dBm at 250kb -90dBm at 1Mbs -85dBm at 2Mbs
Specifications:
Radio current consumption LDO at 1.8V
Specifications:
16mA – TX at +4dBM output power 10.5mA – TX at 0dBm output power 13mA – RX at 1Mbs
Specifications:
Radio current consumption DC-DC at 3V
Specifications:
10.5mA – TX at +4dBm output power
Specifications:
8.1mA – TX at 0dBm output power
Specifications:
9.5mA – RX at 1Mbs
Specifications:
Microcontroller
Specifications:
32-bit ARM Cortex M0
Specifications:
Program Memory
Specifications:
256kB Flash
Specifications:
RAM
Specifications:
16kB
Specifications:
Oscillators
Specifications:
16MHz crystal oscillator
Specifications:
16MHz RC oscillator
Specifications:
32kHz crystal oscillator 32kHz RC oscillator (±250 ppm)
Specifications:
System current consumption
Specifications:
420nA – No RAM retention 530nA - 8k RAM retention 2?A – All peripherals in IDLE mode
Specifications:
Hardware Security
Specifications:
128-bit AES ECB/CCM/AAR co-processor
Specifications:
GPIO
Specifications:
31 configurable
Specifications:
Digital I/O
Specifications:
X2 Hardware SPI master 2X 2-wire master UART Quadrature demodulator
Specifications:
Peripherals
Specifications:
10-bit ADC RNG Temperature sensor RTC
Specifications:
PPI
Specifications:
16-channel
Specifications:
Voltage regulator
Specifications:
LDO (1.8 to 3.6V), LDO bypass (1.75 to 1.95V) Buck DC/DC (2.1 to 3.6V)
Specifications:
Timers/counters
Specifications:
2 x 16 bit, 1 x 24bit, 2 x 24bit, RTC
Specifications:
Package options
Specifications:
RoHS compliant 48-pin 6x6 QFN
1. What is nRF51822?
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.
2. What is the difference between nRF51802 and nRF51822?
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.