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USB Dongle

Bluetooth® 5 Low Energy (LE), Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT

The nRF52840 Dongle is a small, low-cost USB dongle for Bluetooth® Low Energy (LE), Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT and 2.4 GHz proprietary applications using the nRF52840 SoC.

  • The dongle is the perfect target hardware for use with nRF Connect for Desktop as it is low-cost but still support all the short range wireless standards used with Nordic devices.
  • The dongle has been designed to be used as a wireless HW device together with nRF Connect for Desktop .
  • It can also be used to develop code for the nRF52840 SoC mounted on the dongle. Programming is supported through a USB enabled bootloader. Connectors for external debuggers are available.


Key features

  • Bluetooth 5 ready multiprotocol radio
    • 2 Mbps
    • Long Range
    • Advertising Extensions
    • Channel Selection Algorithm #2 (CSA #2)
  • IEEE 802.15.4 radio support
    • Thread
    • Zigbee
  • Arm® CortexTM-M4 with floating point support
  • DSP instruction set
  • Arm CryptoCell CC310 cryptographic accelerator
  • 10 GPIO available via edge castellation
  • USB interface direct to nRF52840 SoC
  • Integrated 2.4 GHz PCB antenna
  • 1 user-programmable button
  • 1 user-programmable RGB LED
  • 1 user-programmable LED
  • 1.7-5.5 V operation from USB or external

Frequency band


On-air data rate

2Mbs/1Mbs/500kbs/125kbs - Bluetooth low energy

250kbs – 802.15.4

2Mbs/1Mbs – 2.4GHz proprietary

Output power

Programmable -20dBm to +8dBm


Bluetooth 5: -103dBm at 125kbs, -99dBm at 500kbs, -96dBm at 1Mbs, -92dBm at 2Mbs

802.15.4: -100dBm at 250kbs

ANT: -92.5dBm at 1Mbs

2.4GHz: -92.5dBm at 1Mbs, -89dBm at 2Mbs

Radio current con­sumption DC-DC at 3v

4.8mA TX at 0dBm, DC/DC at 3V

14.8mA TX at +8dBm, DC/DC at 3V

9.6mA TX at +4dBm, DC/DC at 3V

4.6mA RX at 1Mbps


ARM Cortex-M4F

Program memory

1MB Flash with cache




32MHz crystal oscillator, 64MHz RC oscil­lator, 32kHz crystal oscillator, 32kHz RC oscillator

System current consumption

0.5μA at 3V System OFF mode, no RAM retention

1.5μA System ON mode, no RAM retention

0.7μA All peripherals in IDLE mode

0.03μA per 4kB RAM retention

Hardware security

128-bit AES ECB/CCM/AAR co-processor


ARM CryptoCell 310


48 configurable

Digital I/O

QSPI x 1, SPI master x 3, SPI slave x 3, 2-wire master x 2, 2-wire slave, UARTE x 2, Quadrature decoder, PDM, I²S


12-bit/200ksps ADC, RNG, LP comparator, WDT, PWM x 4




USB 2.0 (12Mbs)

Power supply



32-bit timers x 5, RTC x 3

Package options

AQFN73, 7x7mm



  • Advanced wearables
    • Advanced personal fitness devices
    • Connected health
  • IoT
    • Connected home sensors and controllers
    • Industrial IoT sensors and controllers
  • Interactive entertainment devices
    • Advanced remote controls
    • Gaming controllers
    • Virtual/Augmented Reality applications
USB Type-A Dongle at image or image
USB Type-C Dongle at image or image