TiWi-uB1 Bluetooth Module

Not Recommended for New Design (NRND)


The TiWi-uB1 Bluetooth Smart module is a low-power 2.4 GHz Bluetooth 4.0 (BLE) System-on-Chip in a cost effective, pre-certified footprint. This module comes ships with no firmware in the embedded flash. Applications can be developed and loaded into the integrated microcontroller, and function without the need for an external processor.


  • Bluetooth Smart (Bluetooth Low Energy v4.0)
  • RF Output Power: 0 dBm (Class 3)
  • Certified with on module PCB trace and off module dipole antennas
  • Compact design based on Texas Instruments CC2541 Transceiver (256KB, 8KB RAM)
  • Multiple configuration options 
    - Network processor interface for applications running on an external microcontroller
    - Single-Chip configuration, allowing applications running on internal microcontroller
  • Low power operation
  • RoHS compliant


Antenna Options
Integrated or External via Trace Pad
Bluetooth Version
Bluetooth 4.0 (BLE)
BT Capable
Complete Power-Optimized Stack
Controller and Host
GAP - Central, Peripheral, Observer, or Broadcaster
ATT / GATT - Client and Server
SMP - AES - 128 Encryption and Decryption
FCC, IC, ETSI, Giteki, SIG
TI CC2541
Dimension (Height - mm)
11.6 mm
Dimension (Length - mm)
17.9 mm
Dimension (Width - mm)
2.3 mm
UART, SPI, Digital I/O, and Analog Inputs
Operating Temp - Max (°C)
+85 °C
Operating Temp - Min (°C)
-40 °C
Processor On Board
8051 Microcontroller
Receive Sensitivity
-94dBm (1mpbs)
Transmit Current
21.1 mA, Transmit (0 dBm, no peripherals active, low mcu activity)
25.7 mA, Receive (standard mode, no peripherals active, low mcu activity)
Transmit Power
0 dBm
Antenna Type Bulk or Single Type
450-0103C PCB Trace Antenna Bulk, Cut Tape Module
Antenna Type Bulk or Single Type
450-0103R PCB Trace Antenna Bulk, Tape and Reel Module
Bulk or Single Antenna Type Type
450-0106C Bulk, Cut Tape External Antenna Port Module
Bulk or Single Antenna Type Type
450-0106R Bulk, Tape and Reel External Antenna Port Module
Bulk or Single Antenna Type Type
450-0120 Single PCB Trace Antenna Development Board

Certified Antennas

  • 2.4 GHz Dipole RF Antenna


    2.4 GHz Dipole WiFi & Bluetooth Antenna
    Learn More

Become a Laird Connectivity Customer and Gain Exclusive Access to Our Design Services Team

  • Antenna Scans
  • Antenna selection and placement
  • Custom antenna design
  • Worldwide EMC testing / certifications
  • Embedded RF hardware / firmware design
  • Cloud architecture and integration
  • Mobile application development
  • Product & Industrial Design

Talk to an Expert


Name Part Type Last Updated
Datasheet - TiWi-uB1 All Datasheet 01-17-19
Antenna Design Guide - TiWi-uB1 All Documentation 01-17-19
Product Brief - TiWi-uB1 All Documentation 01-17-19
3D Models - TiWi-uB1 All Technical Drawings 01-17-19
SCH and PCB Models- TiWi-uB1 All Technical Drawings 01-17-19
EM Board User Guide - TiWi-uB1 All Documentation 01-17-19
EM Board CAD - TiWi-uB1 All Technical Drawings 01-17-19
Bluetooth SIG Listing - TiWi-uB1 All Certification 01-17-19
Conflict Minerals Statement All Documentation 01-17-19
RoHS Statement - LSR All Certification 01-17-19
FCC BLuetooth Grant - TiWi-uB1 All Certification 01-17-19
IC Certificate - TiWi-uB1 All Certification 01-17-19
Product Life Cycle Policy - TiWi-uB1 All Certification 01-17-19
REACH - TiWi-uB1 All Certification 01-17-19
RoHS Test Report - TiWi-uB1 All Certification 01-17-19
WEEE Statement - TiWi-uB1 All Certification 01-17-19
Declaration of Conformity - EM Board - TiWi-uB1 All Certification 01-17-19
Declaration of Conformity - Module - TiWi-uB1 All Certification 01-17-19
Radio Equipment Directive - LSR All Certification 01-17-19
TiWI-uB1 EMLink Source Code - Android All Software 01-17-19
TiWI-uB1 EMLink Source Code - iOS All Software 01-17-19
Bluetooth Eval Tool All Software 01-17-19
Host Test App All Software 01-17-19
TiWI-uB1 EM Board Hex File All Software 01-17-19
WLAN and Bluetooth Radio Tools User Guide All Documentation 05-01-19
Android App Source Files All Software 03-29-19
Bluetooth Eval Tool All Software 03-29-19
Host Test App All Software 03-29-19
iOS App Source Files All Software 03-29-19
TiWi-uB1 EM Board Hex File All Software 03-29-19
WLAN and Bluetooth Radio Tools User Guide All Software 05-01-19
Xamarin ModuleLink Source Code All Software 04-02-20


Can I develop my application directly on the TiWi-uB1 module?

The TiWi-uB1 module is a System-On-Chip (SOC), that has an integrated microcontroller that can be used for application development.

Can I use the Manufacturer's Specific AD record Data Type for Proprietary Data?

The Manufacturer's Specific Data Type is used for manufacturer specific data which can be proprietary data structures defined by the manufacturer and only identifiable by manufacturer's equipment/applications. To use the Manufacturer's Specific Data Type you need to have a Company Identifier as assigned by the BT SIG. You must be a registered member of the BT SIG and must apply for the company identifier using the process below (found at this link: https://www.bluetooth.com/specifications/assigned-numbers/company-ident…)   Application & Assignment Process Submit the following below to  Bluetooth Support : Company information (legal name of company) Name of company's primary contact (name and email) A statement that your company is currently a Bluetooth SIG member in good standing* Please allow five business days for your request to be fulfilled, and two business days from the time your request is fulfilled to view your Company Identifier on this page. *  ? BLUETOOTH Member in Good Standing ? shall mean any firm, corporation or other legal entity that has been admitted to membership in the BLUETOOTH SIG, whether a Promoter Member, Associate Member or Adopter Member, as defined in the organizational documents, that has fulfilled all of the requirements for membership, has paid and is current with payment of any and all membership fees, dues and assessments, and whose membership neither has been voluntarily or involuntarily suspended, terminated, or withdrawn from membership consistent with the lawful provisions of the organizational documents of the BLUETOOTH SIG.?

Can I use the module with an external host microcontroller?

Yes, the module can be used with an external host. Laird Connectivity does not provide any out-of-the-box firmware for the module that will allow this mode of operation. There are some great starter examples provided by TI here: Using the CC254x with an external host

Can I use the TiWi-uB1 module in Network Processor mode?

The TiWi-uB1 module can be used in conjunction with an external host processor or microcontroller, using the HCI command protocol over a UART or SPI interface.

Do I need to use a 32,768 Hz crystal with the TiWi-uB1 module?

A 32 kHz crystal is required in applications that use power savings, to maintain the connection timing required by BLE. If your application is line powered and does not use power savings, the timing is maintained by the 32 MHz crystal, and hence no 32 kHz crystal is required.

Do we recommend conformal coating your modules?

We highly do not recommend conformal coating the radio module. If you plan on encapsulating the radio module in a potting compound or conformal coating, you must assure that the compound in liquid or solid form does not enter under the shield where there are sensitive RF components. Some of the capacitive and inductance values are as low (pF and nH) and could be sensitive to contacting materials such as potting compounds. There are potting compounds and conformal coatings which have very good dielectric constants and are suitable for 2.4 GHz potting applications, however, when you apply any of these, they were not accounted for in the circuit design and might reduce performance of the device (or all together cause it not to function).  You should run tests on their particular potting compound and evaluate radio's performance and range.  Also, it's worth mentioning that applying any compound, conformal coating or potting directly to the module WILL void the warranty. If your application requires 100% sealing of the radio module, there is a way to do this very successfully without impacting the module performance. Simply place the module on your PCB. Place a plastic cover over the module (like a hat), make the cover large enough to cover the whole module. Apply glue around the bottom perimeter of the cover where it sits on the PCB. This allows the module to function in free air-space while there is a complete seal around it. This information is only for reference and we recommend you should conduct your own testing with your prototype of your end application to find the best suitable fit for your design.  

How can I test WLAN on the TiWi Series?

The TiWi-BLE can be tested a couple of ways. Either with the TiWi WLAN Eval Tool or in Linux with the following weblink to guide on how to do that. The customer needs to read through our product documentation before going to the following Ti page: http://processors.wiki.ti.com/index.php/WL127x_TX_Testing

Before we suggest using the Ti link above, the module must be calibrated, those steps and instructions are in the Documentation section on the product page.



How many reflows do you recommend for your modules?

We only recommend reflowing our modules once as it can damage the module and void the warranty.

Is the TiWi-uB1 module a single mode or dual mode device?

The TiWi-uB1 is a single mode Bluetooth Smart module, that supports Bluetooth Low Energy (BLE) only.

What are the available CAD file formats?

Laird Connectivity provides layout files PADS and PADS ASCII formats. The ASCII files will import to Altium (and Protel varients) as well as Cadence (Orcad and Allegro) CAD packages. As far as we know, there is no way to import to Eagle CAD. Please be sure to use the .asc file for PCB and the .txt file for the schematic when importing to Altium. Laird Connectivity uses ORCAD for schematics (Gerbers). 

What criteria should be confirmed when soldering Bluetooth modules?

The factors to confirm when checking the soldering job on Bluetooth modules are solder stencil aperture size, solder stencil thickness, solder ball size, solder type, and the MSL guidelines. If the parts have been left out for too long then the modules should be baked to remove any moisture prior to soldering. If there are any failures, we highly recommend providing an x-ray of the module.

What is the difference between TiWi-uB1 revisions?

The difference between the two revisions (R1 and R2) is the label change located on the module itself. The hardware is exactly the same and will run the same firmware on both revisions.

What is the recommendation for washing BT/BLE modules?

We recommend using de-ionized water. Additionally, we recommend avoiding any sonic vibration, heat, and pressure washing as well as any other soaps/chemicals.

What's the recommended process to clean modules?

The recommended cleanser is "hydrocarbon cleaning oil", which can be used to clean the RF shield and PCB. We do not recommend the use of alcohol as it doesn't work as well and could leave residue on the boards.  

Where is the HostTestApp source code for the TiWi-uB1?

The HostTestApp is an example included in the TI BLE Stack. It can be located at the link below. http://www.ti.com/tool/ble-stack Below is an app note that should help in the process as well. http://processors.wiki.ti.com/index.php/PTM_cc2640

Which antennas are certified with the TiWi-uB1 module?

The TiWi-uB1 module is certified with an on module PCB trace antenna. Additionally the module is also certified with the Laird Connectivity 2.4 GHz Dipole and 2.4 GHz Waterproof Dipole antennas, used in conjunction with any of our U.FL to Reverse Polarity SMA cables. Note that the correct model of module needs to be ordered based on the antenna option being used (PCB Trace: 450-0103, Off Module: 450-0106). Consult the Antenna Design Guide for details on implementing the TiWi-uB1 module into your design with one of the above certified antenna options.

Does Laird Connectivity provide 3D files for modules?

Laird Connectivity provides 3D files (STEP) files for most but not all of it's modules.  Based on the nature of the information in the files, in most cases Laird requires a login to access these files as well as layout files and software/firmware downloads.  As such, for most modules, the 3D files are found under the Software Downloads tab of the product page.  The page offers a credentials request link for customers who need credentials.  In most cases, the credentials are provided via return email within about 10 minutes. Please contact support if you have any additional questions or have any issues accessing our downloads.