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
8
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Categories/Feature
Implementation
Physical
Dimensions
15.0 mm x 10 mm x 2.2 mm
Pad Pitch – 0.8 mm
Pad Type – Two rows of pads
Weight
<1 gram
Environmental
Operating
-40 ˚C to +85 ˚C
Storage
-40 ˚C to +85 ˚C
Miscellaneous
Lead Free
Lead-free and RoHS compliant
Warranty
One-Year Warranty
Development Tools
Development Kit
Development kit per module SKU (455-00001 and 455-00002) and free software
tools
Approvals
Bluetooth®
Full Bluetooth SIG Declaration ID
FCC/ISED/EU/MIC/RCM
All BL654 Series
Module Specification Notes:
Note 1
When used in IEEE 802.15.4 mode, 802.15.4 channel 26 must be limited to -8 dBm maximum transmit power to
limit out of band emissions. All other 802.15.4 channels (11-25) may be used up to the maximum +8 dBm output
power.
Note 2
DSR, DTR, RI, and DCD can be implemented in the smartBASIC application or through the Nordic SDK.
Note: Nordic SDK is not supported on the BL654 USB dongle, part #451-00003.
Note 3
With I2C interface selected, pull-up resistors on I2C SDA and I2C SCL must be connected externally as per I2C
standard.
Note 4
Use of the internal DCDC convertor or LDO is decided by the underlying BLE stack.
Note 5
Nordic Errata 197 and 202 related to the use of VDD_HV DCDC convertor, for details refer to
http://infocenter.nordicsemi.com/pdf/nRF52840_Rev_1_Errata_v1.1.pdf. Nordic Errata 202 means no external
current draw (from VDD pin) is allowed during power up and VDD_HV rise time (to 3V) is below one mS.