nRF51822 Wireless & RF Integrated Circuits NRF51822-QFAA
NRF51822-QFAB NRF51822-QFAC QFN48
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.
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 | -93dBm Bluetooth low energy
-96dBm at 250kb
-90dBm at 1Mbs
-85dBm at 2Mbs |
Radio current con-
sumption 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
8.06mA – TX at 0dBm output power
9.7mA – RX at 1Mbs |
| Microcontroller | 32-bit ARM Cortex M0 |
| Program Memory | 256kB/128kB Flash |
| RAM | 32kB/16kB |
| Oscillators | 16MHz crystal oscillator
16MHz RC oscillator
32kHz crystal oscillator
32kHz RC oscillator (±250 ppm) |
System current
consumption | 0.6μA – No RAM retention
1.2μA - 8k RAM retention
2.6μA – 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 |
APPLICATIONS
• 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
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