BTM430 and BTM431 Series Bluetooth Module
The BTM430 and BTM431 Bluetooth modules from Laird have been designed to meet the needs of developers who wish to add robust short range Bluetooth data connectivity to their products. They are based on the market leading Cambridge Silicon Radio BC04 chipset providing exceptionally low power consumption with outstanding range. With a footprint as small as 12.5 x 18.0 mm for the BTM430 and best of class low-power operation these modules are the ideal choice for applications where designers need both performance and minimum size.
Note: The BTM430-xx variant has reached end of production and is available on a limited basis only. Only the BTM430 part numbers are affected. Find the End of Life Announcement in the Documentation tab below.
GPIO (8 lines shared)
Idle (sleep) < 1 mA
I/O: 1.7 V to +3.6 V (independent of VCC)
|Product Type||Technology||OS/Software||System Architecture||Chipset (Wireless)||Antenna Type||Logical Interfaces||Frequency Range (Min)||Frequency Range (Max)||Bluetooth Version||Compliance||Connector||Data Rate||Development Kit Contents||Transmit Power (Max)||Protocols||Range||Receive Sensitivity||Software||Wi-Fi Coexistence||Wireless Specification|
|BTM431||Embedded Module||Bluetooth Classic, Bluetooth 2.0 + EDR||AT Commands, Embedded Stack||Hosted||QCA (CSR) BC04||Internal||Serial||2402 MHz||2480 MHz||v2.0 + EDR||FCC / IC / CE||SMT||2.1 MBps||Development board and software tools||+4 dBm||AT Command Set||Up to 30 meters||-84 dBm||Terminal Software||2 wire and 3 wire schemes supported||Bluetooth v2.0 + EDR|
|Product Type||Technology||OS/Software||System Architecture||Chipset (Wireless)||Antenna Type||Logical Interfaces||Frequency Range (Min)||Frequency Range (Max)||Bluetooth Version||Connector||Data Rate||Transmit Power (Max)||Protocols||Range||Receive Sensitivity||Software||Wi-Fi Coexistence||Wireless Specification|
|DVK-BTM431||Development Kit||Bluetooth Classic, Bluetooth 2.0 + EDR||AT Commands||Hosted||QCA (CSR) BC04||Internal||USB, Serial||2402 MHz||2480 MHz||v2.0 + EDR||USB Pluggable||2.1 MBps||+4 dBm||AT Command Set||Up to 30 meters||-84 dBm||Terminal Software||2 wire and 3 wire schemes supported||Bluetooth v2.0 + EDR|
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
Why isn’t a firmware upgrade available for the BTM43x?
There is no firmware available for download for the BTM43x as it has been very stable for the past few years. All of the BTM43x modules that were manufactured after November 1, 2010 should arrive pre-loaded with this firmware (v126.96.36.199). Version 188.8.131.52 is a comprehensive release of all previous features and bug fixes and is the default firmware loaded at production for all BT v2.0 AT modules. You can check the firmware version of your module by entering the "ati333" command in your terminal.
Is it safe to run a Laird Connectivity Bluetooth module through a PCBA wash cycle?
In general, cleaning the populated modules is strongly discouraged. Residuals under the module cannot be easily removed with any cleaning process.
- Cleaning with water can lead to capillary effects where water is absorbed into the gap between the host board and the module. The combination of soldering flux residuals and encapsulated water could lead to short circuits between neighboring pads. Water could also damage any stickers or labels.
- Cleaning with alcohol or a similar organic solvent will likely flood soldering flux residuals into the RF shield, which is not accessible for post-washing inspection. The solvent could also damage any stickers or labels.
- Ultrasonic cleaning could damage the module permanently.
However, if water washing is required you will need to use deionized water. We do not recommend chemical cleaning and cannot guarantee it will not damage the modules. If you MUST clean PCB with chemicals it is recommended that you test on one board and then confirm the module still works after the process, prior to adding it to production, while understanding the above affects washing the populated PCBs can have on the module.