BC840, Compact nRF52840 Bluetooth 5, Thread, Zigbee Module




BC840 is an advanced, highly flexible solution for today's increasingly demanding Ultra Low Power, Ultra Long Range, and higher throughput applications in the IoT world. Inherent industry-grade security is essential in today's applications, a cryptographic accelerator is embedded.

Sister module BC840M is is slightly large(7.0x12.0x1.5mm), longer range alternative of BC840. Both have identical soldering pad footprints. 

Sister module BC840E has an u.FL connector for external connector.

For a brief description of Bluetooth mesh and its requirements for security, please go to webpage BT840F.

BC840 Advanced Features


  • Bluetooth 5 datarate: 2Mbps, 1Mbps, 500 Kbps, 125 kbps

  • IEEE 802.15.4 Thread and Zigbee

  • ANT/ANT+

  • Nordic 2.4 GHz proprietary

Power Supply

  • 1.7V to 3.6V DC power supply

  • High voltage power supply to accept up to 5.5V DC for direct connection to Lithium batteries or 5V system power. An external voltage regulator is not required. Your total system cost can be lower and your PCB size can be smaller.


  • Embedded CryptoCell 310 co-processor can be used to provide more secure connection and to prevent hacker.

  • BC840 is required if your Bluetooth 5 devices are used in mesh networks with many nodes for desirable performance. Security is mandatory in Bluetooth mesh networks. By offloading decryption, encryption, and authentication works to CryptoCell-310, BC840 can deliver high performance in Bluetooth mesh networks.

BC840 Specifications

  • Nordic nRF52840 CKAA (Rev. D silicon) with ARM Cortex M4F.

  • ARM CryptoCell-310 cryptographic co-processor

  • 1MB flash, 256 KB RAM

  • Complete RF solution with integrated antenna

  • Bluetooth range: 10 meters at 1Mbps, estimated.

  • Multiple protocols: BLE, ANT, Thread, Zigbee

  • NFC-A tag interface for Out Of Band pairing

  • 128-bit AES HW encryption

  • Serial Wire Debug (SWD)

  • Nordic SoftDevice Ready

  • Over-The-Air (OTA) firmware update

48 GPIOs, firmware configurable, Peripherals

  • 12 bit/200KSps ADC

  • 3x SPI Master/Slave, 8 Mbps

  • 2x 2-wireMaster/Slave, I2C compatible

  • UART

  • Quadrature Demodulator (QDEC)

  • I2S audio interface

  • Digital microphone interface

  • Peripherals: Temperature sensor, general comparator, Low power comparator, Random Number Generator

  • 20 channel CPU independent Programmable Peripheral Interconnect (PPI)

  • 5 x 32 bits, 3 x 24 bits Real Time Counters (RTC)


  • Operation voltage: 1.7V to 5.5V


  • Operation Temperature: -40°C to +85°C

  • Integrated shield to resist EMI

  • Sizes: 7..0x9.0x1.5mm

  • Availability: Production with Rev D silicon, March 2019


  • FCC ID: X8WBC840M

  • IC (Industrial Canada) ID: 4100A-BC840M

  • Europe: Certified

  • Japan: TELEC 201-190140

  • Australia: RCM Certified.

  • QDID: 108621

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BC840, Compact nRF52840 CKAA, Bluetooth 5, Thread, Zigbee module
from 7.77

BC840 is a compact, short range nRF52840 CKAA module.

Size is 7.0x9.0x1.5mm.

$7.77 each at 10-pack; $7.77 each at 100-pack

$7.44 each at 1K pcs

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