Specifications
Table Of Contents
- 1 Overview and Key Features
- 2 Specification
- 3 Hardware Specifications
- 4 Power Consumption
- 5 Functional Description
- 5.1 Power Management
- 5.2 BL654 Power Supply Options
- 5.3 Clocks and Timers
- 5.4 Radio Frequency (RF)
- 5.5 NFC
- 5.6 UART Interface
- 5.7 USB interface
- 5.8 SPI Bus
- 5.9 I2C Interface
- 5.10 General Purpose I/O, ADC, PWM and FREQ
- 5.11 nRESET pin
- 5.12 Two-Wire Interface JTAG
- 5.13 BL654 Wakeup
- 5.14 Low Power Modes
- 5.15 Temperature Sensor
- 5.16 Security/Privacy
- 5.17 Optional External 32.768 kHz crystal
- 5.18 451-00001 On-board PCB Antenna Characteristics
- 5.19 451-00003 USB BLE 5.1 Dongle Mechanical Details
- 6 Hardware Integration Suggestions
- 7 Mechanical Details
- 8 Application Note for Surface Mount Modules
- 9 Regulatory
- 10 Ordering Information
- 11 Bluetooth SIG Qualification
- 12 Additional Assistance
https://www.lairdconnect.com/wireless-
modules/bluetooth-modules/bluetooth-5-
modules/bl654-series-bluetooth-module-nfc
4
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Every BL654 Series module is designed to simplify OEMs enablement of Bluetooth Low
Energy (BLE) v5.1 and Thread (802.15.4) to small, portable, power-conscious devices.
The BL654 provides engineers with considerable design flexibility in both hardware and
software programming capabilities. Based on the world-leading Nordic Semiconductor
nRF52840 chipset, the BL654 modules provide ultra-low power consumption with
outstanding wireless range via +8 dBm of transmit power and the Long Range (CODED
PHY) Bluetooth 5 feature. The BL654 is programmable via Laird Connectivity’s
smartBASIC language or Nordic’s software development kit (SDK).
smartBASIC is an event-driven programming language that is highly optimized for memory-constrained systems such as
embedded modules. It was designed to make BLE development quicker and simpler, vastly cutting down time to market.
The Nordic SDK, on the other hand, offers developers source code (in C) and precompiled libraries containing BLE and ANT+
device profiles, wireless communication, as well as application examples.
Note: BL654 hardware provides all functionality of the nRF52840 chipset used in the module design. This is a hardware
datasheet only – it does not cover the software aspects of the BL654.
For customers using smartBASIC, refer to the smartBASIC extensions guide (available from the BL654 product page
of the Laird Connectivity website. For customers using the Nordic SDK, refer to www.nordicsemi.com.
Note: Nordic SDK is not supported on the BL654 USB dongle, part #451-00003.
▪ Bluetooth v5.1 – Single mode
▪ NFC
▪ 802.15.4 (Thread) radio support
▪ External or internal antennas
▪ Multiple programming options
– smartBASIC AT command set shim or
– Nordic SDK in C
▪ Compact footprint
▪ Programmable Tx power +8 dBm to -20 dBm, -40 dBm
▪ Rx sensitivity – -95 dBm (1 Mbps), - 103 dBm (125 kbps)
▪ Ultra-low power consumption
▪ Tx – 4.8 mA peak (at 0 dBm, DCDC on)
(See Note 1 in the Power Consumption section)
▪ Rx: 4.6 mA peak (DCDC on)
(See Note 1 in the Power Consumption section)
▪ Standby Doze – 3.1 uA typical
▪ Deep Sleep – 0.4 uA – (See Note 4 in the Power
Consumption section)
▪ UART, GPIO, ADC, PWM, FREQ output, timers,
I2C, SPI, I2S, PDM, and USB interfaces
▪ Fast time-to-market
▪ FCC, EU, ISED, RCM and Japan certified
▪ Full Bluetooth Declaration ID
▪ Other regulatory certifications on request
▪ No external components required
▪ Industrial temperature range (-40° C to +85° C)
▪ Medical devices
▪ IoT Sensors
▪ Appcessories
▪ Fitness sensors
▪ Location awareness
▪ Home automation