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nRF51822 Bluetooth Low Energy BLE4 and 2.4GHz Wireless Communication Module

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The nRF51822 is a powerful, highly flexible multi-protocol SoC ideally suited for Bluetooth® low energy and 2.4GHz ultra low-power wireless applications. The nRF51822 is built around a 32-bit ARM® Cortex™ M0 CPU with 256kB flash + 16kB RAM. The embedded 2.4GHz transceiver supports Bluetooth low energy as well as 2.4GHz operation, where the 2.4GHz mode is on air compatible with the nRF24L series products from Nordic Semiconductor.

nRF51822 also incorporates a rich selection of analog and digital peripherals that can interact without CPU intervention through the Programmable Peripheral Interconnect (PPI) system. A flexible 31-pin GPIO mapping scheme allows I/O like serial interfaces, PWM and quadrature demodulator to be mapped to any device pin as dictated by PCB requirements. This enables complete design flexibility associated with pin-out location and function.

nRF51822 supports Bluetooth low energy protocol stacks as well as 2.4GHz protocol stacks, including Gazell, both available free of charge. nRF51822 requires a single power supply and gives the user the option of using on chip linear regulators giving a supply range of 1.8-3.6V, a direct 1.8V mode and a on chip DCDC buck converter giving a supply range of 2.1-3.6V. The use of the DC-DC converter can be dynamically controlled during run time and enables nRF51822 to operate at radio peak currents below 10 mA @ 3V supply (TX @ 0 dBm & RX).

Core51822 Specifications

  • Onboard chip: nRF51822
  • Communication distance (open outdoor@1M data rate): 30m
  • Frequency range: 2.4GHz
  • Operating voltage: 2.0V ~ 3.6V
  • Operating temperature: -40℃ ~ 85℃
  • Dimension (PCB): 24.5mm x 32.26mm
  • Expansion pinheader: all the I/Os except P0.26 and P0.27
  • Pinheader pitch: 2.00mm
  • Spacing between pinheaders on the left side and the right side: 18.00mm
  • Antenna: onboard antenna

 

nRF51822 Features

  • 2.4 GHz multiprotocol RF transceiver
  • ARM® Cortex™-M0 32 bit processor
  • 128 bit AES HW encryption
  • 256kB flash & 16kB RAM
  • Programmable Peripheral Interconnect (PPI)
  • Digital interfaces: SPI, I2C, UART
  • 10 bit ADC
  • Programmable output power: -20 to +4 dBm
  • Independent application development and protocol stack
  • Fully compatible with NRF24L series
  • Pinout compatible with NRF51xxx series
  • Global separate power management
  • Operating voltage: 1.8 V ~ 3.6 V

 

Applications

  • Wearable devices
  • Bluetooth intelligent application
  • Mobile phone accessories
  • RFID labels
  • Smart home appliances
  • Industry control
  • Data acquisition system

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