BTM44x

Datasheet

Embedded Wireless Solutions Support Center:

http://ews-support.lairdtech.com

www.lairdtech.com/wireless

5

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The BTM44x Bluetooth® modules from Laird Technologies 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. They support the latest Bluetooth® Version 2.1 Specification, providing the important

advantage of Secure Simple Pairing, which improves security and enhances the ease of use for end customers.

With physical sizes as small as 12.5 x 18.0mm and best of class, low-power operation, these modules are the

ideal choice for applications where designers need both performance and minimum size. For maximum

flexibility in systems integration, the modules are designed to support a separate power supply for I/O.

To aid product development and integration, Laird Technologies has integrated a complete Bluetooth protocol

stack within the modules, including support for multiple Bluetooth Profiles. The modules are fully qualified as

Bluetooth End Products, allowing designers to integrate them within their own products with no further

Bluetooth Qualification. They can then list and promote their products on the Bluetooth website free of charge.

Support for Serial Port Profile (SPP), Human Interface Device (HID) profile and Health Device Profile (HDP) are

included in the module. The support of the Bluetooth Sig’s Health Device Profile makes this the ideal module for

development of Continua compliant medical and wellness devices. By default the Health Device Profile supports

the ISO/IEEE 11073-10415 device specialization for weigh scales, but additional specializations for glucose and

thermometer are available with more upon request.

Communication is available to the module over a serial UART utilizing either a custom Multi-point Packet

Protocol API or comprehensive AT commands. Combined with a low cost developer’s kit, this ensures that the

choice of Laird Technologies modules guarantees the fastest route to market.

Features and Benefits



Bluetooth® v2.1+EDR



Adaptive Frequency Hopping to cope

with interference from other

wireless devices



Secure Simple Pairing support



External or internal antenna options



Comprehensive AT interface for

simple programming



Alternate Packet based interface for

complex programming



Bluetooth® END Product Qualified



Compact size



Class 2 output – 4dBm



Low power operation



UART interface

Applications



Embedded Devices



Phone Devices



Phone Accessories



Security Devices



Medical and Wellness Devices



Automotive Applications

Bluetooth® Profiles Supported



Serial Port Profile (SPP)



Human Interface Device (HID) Profile Host

and device supported



Health Device Profile (HDP): Agent supported



IEEE Device Specialization 11073-10415 (Weight Scale)



IEEE Device Specialization 11073 - 10408 (Thermometer)



IEEE Device Specialization 11073 – 10417 (Glucose)