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)
|Antenna Options||Bluetooth Version||Chipset (Wireless)||Compliance||Connector Type||Data Rate||Development Kit Contents||Frequency||Frequency Range (Max)||Frequency Range (Min)||Logical Interfaces||Max Transmit Power||Protocols||Range||Receive Sensitivity||Software||Wi-Fi Coexistence||Wireless Specification|
|BTM431||Integrated Antenna||v2.0 + EDR||CSR BC04||FCC / IC / CE||SMT||2.1 MBps||Development board and software tools||2.4 GHz||2.480 GHz||2.402 GHz||UART||+4 dBm||AT Command Set||Up to 30 meters||-84 dBm||Terminal Software||2 wire and 3 wire schemes supported||Bluetooth v2.0 + EDR|
|Antenna Options||Bluetooth Version||Chipset (Wireless)||Connector Type||Data Rate||Frequency||Frequency Range (Max)||Frequency Range (Min)||Logical Interfaces||Max Transmit Power||Protocols||Range||Receive Sensitivity||Software||Wi-Fi Coexistence||Wireless Specification|
|DVK-BTM431||Integrated Antenna||v2.0 + EDR||CSR BC04||USB Pluggable||2.1 MBps||2.4 GHz||2.480 GHz||2.402 GHz||USB||+4 dBm||AT Command Set||Up to 30 meters||-84 dBm||Terminal Software||2 wire and 3 wire schemes supported||Bluetooth v2.0 + EDR|
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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.