Specifications

https://www.lairdconnect.com/wireless-
modules/bluetooth-modules/bluetooth-5-
modules/bl654-series-bluetooth-module-nfc
7
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Categories/Feature
Implementation
Profiles
Services supported
▪ Central Mode
▪ Peripheral Mode
▪ Mesh (with custom models)
▪ Custom and adopted profiles
Programmability
smartBASIC
FW upgrade via JTAG or UART
Application download via UART or Via Over-the-Air (if SIO_02 pin is pulled high
externally)
Nordic SDK
Via JTAG
Note: Nordic SDK is not supported on the BL654 USB dongle, part #451-00003.
Operating Modes
smartBASIC
Self-contained Run mode
Selected by nAutoRun pin status: LOW (0V).
Then runs $autorun$ (smartBASIC application script) if it exists.
Interactive/Development mode
HIGH (VDD).
Then runs via at+run (and file name of smartBASIC application script).
Nordic SDK
As per Nordic SDK
Note: Nordic SDK is not supported on the BL654 USB dongle, part #451-00003.
Supply Voltage
Supply (VDD or VDD_HV) options
▪ Normal voltage mode VDD 1.7- 3.6 V – Internal DCDC converter or LDO
(See Note 4 in the Module Specification Notes)
OR
▪ High voltage mode VDD_HV 2.5V-5.5V Internal DCDC converter or LDO
(See Note 4 and Note 5 in the Module Specification Notes)
Power Consumption
Active Modes Peak Current (for
maximum Tx power +8 dBm)
– Radio only
14.8 mA peak Tx (with DCDC)
Active Modes Peak Current (for Tx
power -40 dBm) – Radio only
4.6 mA peak Tx (with DCDC)
Active Modes Average Current
Depends on many factors, see Power Consumption
Ultra-low Power Modes
Standby Doze
3.1 uA typical
Deep Sleep
0.4 uA
Antenna Options
Internal
Printed PCB monopole antenna – on-board
451-00001 variant
External
▪ Dipole antenna (with IPEX connector)
▪ Dipole PCB antenna (with IPEX connector)
▪ Connection via IPEX MH4 – 451-00002 variant
See the Antenna Information sections for FCC, ISED, MIC, RCM and EU.