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Bluetooth Module

Bluetooth Module
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Additional Information about the use of this Bluetooth module mabe found in the support files repository

The Support Files repository holds a number of additional resorces such as the full datasheet, Source code examples, the design files and source code for the QuickBlue commercial product

Fully Qualified, full featured Bluetooth® Module

  • Bluetooth Class 1 Compliant
  • SMD (Surface Mount Device)
  • Flash memory
  • Reference oscillator built in
  • UART (RAW) & PCM interfaces
  • Conforms to Bluetooth 1.1.0 Specification

The Bluetooth Module contains Cambridge Silicon Radio Blue Core -2, which has complete radio part and base band controller section (16bits RISC processor, RAM and Flash memory). including a high accuracy reference oscillator and sub clock for extremely low power management. Protocol software is pre-loaded into the integrated Flash memory and interfaces to the HCI layer the protocol stack on an appropriate host system.

---> Datasheet and Supporting Files <---


Features List

  • Power level +12.5 dBm typ.
  • Program memory 8M bits Flash
  • RAM 32k bytes x 16 bits
  • Reference oscillator Built in
  • Sub clock oscillator Built in
  • Audio interface PCM A-Law, m-Law (CVSD)
  • Serial data interface UART (RAW : 115.2 kbps)
  • Physical connection SMD (solder ball bump array)

Standard Operating Conditions

Operating Temperature
Nominal: +15 °C to +35 °C
Extreme: -20°C to +75 °C
Operable Temperature -20°C to +75 °C
Storage Temperature -30 °C to +85 °C
Supply Voltage; VCC
Nominal: +3.3 V
Extreme: +3.3 V ± 0.1 V
Absolute Maximum Ratings
Supply Voltage
VCC: -0.4V ~ +3.6V


The proposed Bluetooth™ Module has fully integrated 2.4GHz radio transceiver with Class1 power amplifier, receiver and frequency-hopping synthesizer. In order to facilitate power management, each section of the radio may be powered up and down separately. Various software controllable switches have been implemented to control power to the transmitter, the frequency synthesizer/VCO, the receiver and the LNA.

Base band

The Proposed Bluetooth™ Module contains a link controller, which performs all the real-time functions of the Bluetooth™ baseband protocol layer, including data transfer and connection management. The device also controls states of operation enables sniff, park and hold modes of operation. Real-time functions such as frequency-hopping burst timing and clock synchronization are also implemented in this hardware. . On the receive side the controller performs error correction and de-scrambling before de-packetising the incoming payload and storing it in RX buffers.

The link controller hardware also implements the basic, repetitive actions of paging, inquiry, page or inquiry scans and the general Bluetooth™ modes of park and sniff.

The base band contains the following functionality:

FEC – Forward Error Correction
FEC provides the ability to correct any errors, which might have occurred during the transmission of the original data. FEC rate of 1/3, 2/3, and Automatic Repeat Request (ARQ) are implemented.

Whiten / De-whiten – Scramble/Unscramble
Whitening/Scramble refers to the addition of randomized data to avoid any undesirable DC bias effects in the transfer of data packets. De-whitening/Unscramble is the reversal of the original process where the original data can be extracted.

Encrypt/Decrypt – Apply/Remove Encryption
Encryption is the security feature where keys are used to prevent the access of data to unauthorized sources. This functional block is responsible for the processing of authentication and key management functions required by Bluetooth™

CRC – Cyclic Redundancy Check
This is the error detection function implemented to process the CRC field within the payload section of a Bluetooth™ transfer packet. On the receive side, the CRC is checked with the expected value based on algorithms. On the transmit, a correct CRC is generated and appended to the payload.

HEC – Header Error Correction
This is the error correction function dealing with the 8-bit HEC field of the Bluetooth™ packet header as specified in Version 1.2 spec.

Attention to FAA (Federal Aviation Administration) compliance
The FAA's proposal is to restrict the use of any wireless devices during an entire flight. This restriction applies to Bluetooth™. Customers must implement a disable switch for Bluetooth™ functionality in hardware or software. The proposed module contains disable and enable radio over extended HCI commands, which shall be implemented by the application software of any products, which might be carried on an airplane.

This product is not designed for use in life support appliances, devices or systems where malfunction of this product can reasonably be expected to result in personal injury. Customers using or selling this product for use in such applications do so at their own risk and agree to fully indemnify Crownhill for any damages resulting from such improper use or sale.