BL654 - Bluetooth v5 / 802.15.4 / NFC modules & USB dongle

Complete multi-protocol embedded wireless modules with exceptional processing capability

Building on Laird's expertise with Nordic from the BL600 and BL652 series comes the most powerful yet - the BL654 series. It provides OEM's with maximum design flexibility and performance. A complete multi-protocol embedded wireless offering with exceptional processing capability, all at a micro power budget.

Powered by Nordic's nRF52840 silicon, the small form factor BL654 modules, DVKs and USB Dongle provide for a secure, robust BLE and Cortex M4FCPU for any OEM's product design. The BL654 provides you with maximum development flexibility with programming options for the Nordic SDK, a simple, intuitive AT Command Set, as well as Laird's own smartBASIC environment.

The BL654 series brings out all nRF52840 hardware features and capabilities including USB access, up to 5.5V supply considerations, and 802.15.4 (Thread) implementation. Complete regulatory certifications enable faster time to market and reduced development risk completes Laird's simplification of your next Bluetooth design!

Key Features:

  • Bluetooth v5 Bluetooth Low Energy (BLE) plus NFC
  • Thread 802.15.4 functionality (via Nordic SDK)
  • Widest range of configurable interfaces: UART, I2C, SPI, ADC, GPIO, PWM, FREQ, and NFC
  • Industrial temperature rating (-40º to +85º C)
  • Ultra-small footprint (15mm x 10mm x 2.2mm)
  • BLE Peripheral/Central roles with DTM embedded
  • 2Mbps & LE Long Range: Support for 2Mbps, 1Mbps, & 125kps coded
  • Hostless operation - Internal MCU reduces BOM
  • Powerful Core Cortex M4F (1MB Flash, 256k RAM)
  • Built on years of experience with Nordic (BL600 & BL652 Series)
  • Fully featured development kit everything needed to start BLE development
  • Application design choice: Leverage Laird's smartBASIC, simple AT Command Set or utilize Nordic SDK directly.
  • USB Dongle option: Packaged USB Adapter - bring full Bluetooth v5 connectivity to ANY device with a virtual COM port capability

For sales and technical development support from our in-house engineering team, please contact the Alpha Micro team.

  • Antenna Options:
    PCB Trace antenna or IPEX MHF4 RF Connector
  • BLE Features:
  • GATT Client & GATT Server
    Central/Peripheral Roles.
    Up to 20 BLE connections
    BLE Mesh
    2M PHY
    LE Advertising Extensions
    Secure Connections
    Privacy v1.2
    Data Packet Length Extensions
    vSP - Virtual Serial Port
  • Bluetooth Version:
    v5 - Single-Mode (Peripheral and Central Roles)
  • Chipset:
    Nordic nRF52840
  • Compliance:
    Lead-free and RoHS compliant
    Bluetooth® Complete Declaration ID (pending)
    Approvals FCC / IC / CE / MIC / RCM - All BL654 Series (pending)
  • Data Rate:
    Raw Data Rates (Air) - 1 Mbps, 2 Mbps, 125kbps
  • Frequency:
    2.402 - 2.480 GHz
  • Frequency Range (Max):
  • Frequency Range (Min):
  • Input Power:
    1.7V - 5.5V
  • Logical Interfaces:
    UART Interface - TX, RX, CTS, RTS. DTR, DSR, DCD, RI possible in smartBASIC (GPIO) Default: 115200, N, 8, 1. Configurable from 1200 bps to 1 Mbps
    USB Interface - 2 pins - CDC/Audio/HID & Mass storage virtual interfaces.
    Other - 48 multifunction GPIO's
  • Max Transmit Power:
    + 8 dBm
  • Product Line:
    BL654 Series
  • Receive Sensitivity:
    -95 dBm (typical @ BLE 1 Mpbs)
    -92 dBm (typical @ BLE 2 Mbps
    -103 dBm (typical @ BLE 125 kbps)
  • Software:
    smartBASIC - On-board BASIC programming language
    AT Command Set - Simple AT 'Hayes style' command protocol
    Nordic SDK - Software/Support available from Nordic directly
    FW upgrade via UART or JTAG
  • Wireless Specification:
    Bluetooth v5 - Single-Mode
    Thread® - 802.15.4 stack provided via Nordic SDK
  • IoT devices and sensors
  • Beacons and Proximity applications
  • Secure medical peripherals
  • Industrial monitoring
Part No.
Pack Sizes
451-00001 BL654 module - PCB trace antenna Reel of 1000

BL654 module - IPEX connector for external antenna

Reel of 1000
451-00003 BL654 USB dongle Packs of 100
455-00001 Development kit for BL654 module with PCB trace antenna Each
455-00002 Development kit for BL654 module with IPEX connector Each

BL654 development kits provides a platform for rapid wireless connectivity prototyping, providing multiple options for the development of Bluetooth Low Energy v5 plus Near Field Communication applications.

455-00001: Kit for BL654 module with PCB trace antenna:

DVK-BL654_PCB Antenna

455-00002: Kit for BL654 with IPEX connector:


Kits contain:

Development board The development board has the required BL654 module soldered onto it and exposes all available hardware interfaces.
Power options
  • USB cable - Type A to micro type B. The cable also provides serial communications via the FTDI USB - RS232 converter chip on the board.
  • DC barrel plug for connection to external power supply (5.5VDC max)
  • 3x AAA battery holder fitted on underside of development board
  • Coin-cell holder (powers module only) fitted on underside of development board
Two-pin jumpers for pin headers (5) Five jumpers for 2.54 mm pitch headers used on BL654 development board.
Fly leads (6) Supplied to allow simple connection of any BL654 module pin (available on Plated Though Holes or headers on J44, J47, J48, J41, J29, J1, J12, J1, J5, J17, J21, J6 and J36).
External BLE dipole antenna

Supplied with Development Kit part # 455-00002 only.

External antenna, 2 dBi, FlexPIFA (Laird part #001-0022) with integral RF coaxial cable with 100 mm length and IPEX-4 compatible RF connector.

External NFC antenna

Supplied with Development Kit part # 455-00002 only

Laird NFC flexi-PCB antenna - Part # 0600-00061

Web link card

Provides links to additional information including the BL654 user guide, firmware, terminal utilities, schematics, quick start guides, firmware release notes and more.

Note: Sample smartBASIC applications are available to download from the Laird

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Last updated: 23 May 2018