BL651 Series Bluetooth Module

Recommended for New Design (RND)

Overview

Laird Connectivity’s BL651 Series contains the latest Nordic nRF52810 silicon with Bluetooth 5 Low Energy capabilities and groundbreaking ultra-low power performance. Building on Laird Connectivity’s multi generation module developments utilizing Nordic silicon (BL600, BL652, BL654) – now comes the latest series offering cost effective Bluetooth 5 enablement for simple Bluetooth LE applications. 

The BL651 series exposes all the capabilities of the Nordic nRF52810 silicon in a small, fully certified module with simple soldering castellation for easy prototyping and mass production manufacturing. Use the Nordic SDK & SoftDevice or Zephyr Project to deliver your Bluetooth LE application. 

Let Laird Connectivity’s innovative BL651 series and decades of expertise in Bluetooth module design speed your product to market.

In addition the BL651 series is 100% PCB footprint drop in compatible with the BL652 series of modules.

Specifications

Antenna Options
Integrated (453-00005) or External via IPEX MHF4 (453-00006)
BLE Connections
3
Bluetooth Version
5.0
BT Class
2
Certifications
FCC, ISED, EU, UKCA, MIC, AS-NZS
Chipset
Nordic nRF52810
Compliance
RoHS, REACH
Dimension (Height - mm)
2.1 mm
Dimension (Length - mm)
14 mm
Dimension (Width - mm)
10 mm
Dual Mode
No
GPIO
32 configurable lines
Link Budget
100dB (conducted)
Logical Interfaces
UART, GPIO, I2C, SPI, ADC, PWM
NFC
No
Operating Temp (Max) (°C)
85 °C
Operating Temp (Min) (°C)
-40 °C
Peripheral Role
Yes
Processor On Board
Cortex M4
Programming Options
Nordic SDK or Zephyr
Receive Sensitivity
-96dBm (1mpbs)
Stack On Board
Yes
Transmit Power
4 dBM (max.) Configurable down to -40 dBm
Wi-Fi Coexistence
No
Product Type Technology OS/Software System Architecture Chipset (Wireless) Antenna Type Logical Interfaces Frequency Range (Min) Frequency Range (Max) Bulk or Single Type
453-00005 Embedded Module Bluetooth 5.0, Single Mode (BLE) Nordic SDK, Zephyr Hostless Nordic nRF52810 Internal Serial, GPIO, I2C, SPI, ADC, PWM 2402 MHz 2480 MHz Bulk - Tape/Reel Module
Product Type Technology OS/Software System Architecture Chipset (Wireless) Antenna Type Logical Interfaces Frequency Range (Min) Frequency Range (Max) Bulk or Single Type
453-00005C Embedded Module Bluetooth 5.0, Single Mode (BLE) Nordic SDK, Zephyr Hostless Nordic nRF52810 Internal Serial, GPIO, I2C, SPI, ADC, PWM 2402 MHz 2480 MHz Bulk - Cut Tape Module
Product Type Technology OS/Software System Architecture Chipset (Wireless) Antenna Type Logical Interfaces Frequency Range (Min) Frequency Range (Max) Frequency Range 2 (Min) Frequency Range 2 (Max) Antenna Options Bulk or Single Type
453-00006 Embedded Module Bluetooth 5.0, Single Mode (BLE) Nordic SDK, Zephyr Hostless Nordic nRF52810 External Serial, GPIO, I2C, SPI, ADC, PWM 2402 MHz 2480 MHz 13.56 MHz 13.56 MHz IPEX MHF4 Bulk - Tape/Reel Module
Product Type Technology OS/Software System Architecture Chipset (Wireless) Antenna Type Logical Interfaces Frequency Range (Min) Frequency Range (Max) Frequency Range 2 (Min) Frequency Range 2 (Max) Antenna Options Bulk or Single Type
453-00006C Embedded Module Bluetooth 5.0, Single Mode (BLE) Nordic SDK, Zephyr Hostless Nordic nRF52810 External Serial, GPIO, I2C, SPI, ADC, PWM 2402 MHz 2480 MHz 13.56 MHz 13.56 MHz IPEX MHF4 Bulk - Cut Tape Module
Additional Description
453-00062-K1 USB-SWD Programming Kit: Includes mainboard, TC2050-IDC Tag Connect cable, 10-pin flat IDC cable, 1.2 m USB cable, and 2-pin jumper

Photo Gallery

453-00006C

453-00005

453-00005C

453-00006

453-00062-K1

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Documentation

Name Part Type Last Updated
BL651 Product Brief All Product Brief 10/08/2021
Datasheet - BL651 All Datasheet 02/21/2021
Application Note - Guidelines for Replacing Antennas v1.0 All Application Note 01/17/2019
BL651 3D Models (453-00005).zip All Documentation 01/17/2019
BL651 3D Models (453-00006).zip All Documentation 01/17/2019
BL651 Host Land Pattern.pdf All Documentation 01/17/2019
BL651 Mechanical Diagram.pdf All Documentation 01/17/2019
BL651 PCB Footprint and SCH Symbol.zip All Documentation 01/17/2019
EU Certifications - BL651 All Certification 08/10/2021
FCC Certifications - BL651 All Certification 12/14/2020
ISED (Canada) Certifications - BL651 All Certification 12/14/2020
MIC Certifications - BL651 All Certification 12/14/2020
AS/NZS Certifications - BL651 All Certification 12/14/2020
RoHS 3 - Bluetooth All Certification 09/23/2021
Regulatory Information - BL651 All Certification 08/10/2021
ISED ICES-003 Issue 7 Declaration of Compliance All Certification 05/18/2021
PCN 10A-2021 - BL651 Series All Documentation 10/13/2021

FAQ

Is it possible to use AT commands to configure BL651?

The BL651 cannot be configured using AT commands, as the AT command set available with the BL65x modules requires loading a smartBASIC Application. Because of the limited Flash and RAM available on the BL651 it cannot support the smartBASIC firmware and therefore, the AT Interface application cannot be loaded to the module. It must be programmed using any of the developer platforms that support working with the nRF52810, such as Nordic SDK, Zephyr Project, or MyNewt, among others. All of these platforms require flashing the BLE application via the JTAG Interface, therefore it is required that you bring out the JTAG interface in order to program the BL651 module for BLE operation.

Where can I download UwTerminal as referenced in the BT900 or BL600 User Guides?

The BT900 and BL600 documents refer to the UwTerminal utility which was the primary utility when these documents were written. This utility is still available in the firmware zip files when they are downloaded from the BT900 Product Page or BL600 Product Page .

However, UwTerminalX is the new improved version of UwTerminal offering additional features not available in predecessor UwTerminal. We recommend working with UwTerminalX as it will support all the features mentioned in the BT900 documentation and offer the additional features, such as access to online Xcompilers.

The latest release of UwTerminalX can be downloaded from our GitHub Repository: UwTerminalX/releases


 

Do BL65x modules support Boundary Scan function?

Unfortunately, we do not offer Boundary Scan functionality on the BL65x modules.


We do understand it is harder to place and recommend during development the use of an X-ray or some other means to verify to soldering process.

Is there a DVK for the BL651 module?

We do not offer a DVK for the BL651, however, as the BL651 and BL652 are pin for pin compatible, the DVK-BL652 can be used during development as the development platform. It is important you keep in mind that the BL651 has half the flash/RAM so it cannot support any central role functions such as scanning and initiating connections, and it is not capable of supporting smartBASIC firmware, therefore it will be necessary to flash the DVK with custom firmware, via the JTAG interface, based on the development platform that you elect to work with.

BL651 software development can be completed with any platform that supports working with the nRF52810 such as Nordic SDK, Zephyr Project or MyNewt to name a few.

Where are BL651 Sample Applications Located?

The BL651 is for simple BLE applications, and does not support smartBASIC firmware due to its limited flash. Therefore, if you will be working with the BL651 you would need to program the module using a platform which supports working with Nordic's nRF52810 such as the Nordic SDK or Zephyr Project. Both Nordic and Zephyr Project offer sample code when you download and install their platform. Software development support requests will need to be directed to the resources for the platform selected.

Can I use Windows to scan for my BLE Peripheral and Connect to it?

Laird does not provide a Windows utility for scanning and connecting to BLE devices. We are also not aware of any existing third party apps to do this either. Android and iOS are the best options for scanning for and connecting to BLE radios. 

How can I connect a Bluetooth Low Energy Device to a PC?

Bluetooth Low Energy uses Services as opposed to the set of standardized profiles that exists for Classic Bluetooth. While some Bluetooth Low Energy services have been standardized by the Bluetooth SIG, the development of custom services is allowed to meet custom application requirements.
 
Because Bluetooth Low Energy uses a completely different protocol than Classic Bluetooth and supports custom services, Bluetooth Low Energy devices cannot connect to a computer through the typical Bluetooth configuration of a computer. Therefore, connecting to a PC requires writing and running a Bluetooth Low Energy Central Role/Client application to collect the data sent from the Bluetooth Low Energy peripheral modules. Application development for PCs and Mobile devices is outside the scope of our support. Alternatively, a BL654 USB dongle could be used as a BLE Central Role device, to collect the BLE data and pass it to the PC over a COM Port. However, you would still need an application to view and process the data received over that COM Port.
 
We generally recommend customers who are new to Bluetooth Low Energy obtain a copy of Getting Started with Bluetooth Low Energy to help them understand the Bluetooth Low Energy protocol and the GATT table. There are also many resources available online which explain this. 

When Bluetooth Low Energy was first introduced and we launched our BL6xx product line (predecessors to the BL65x series) we produced the BL600 and BL620 smartBASIC Application Walkthrough document, which provides an overview of how Bluetooth Low Energy works and how a GATT table is constructed. 

Do I have to use the Segger branded debugger to program over the 2-wire SWD interface (JTAG) of the Nordic-based modules?

Yes, any programmer/debugger that supports the SWD 2-wire interface and the Cortex M4F processor should work with the Nordic-based modules. You can find information about the memory map in the nRF5xxxx Product Specification under the Memory and NVMC sections.