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BC127
Datasheet
Key Specifications
Bluetooth Certified 4.0 Audio module
Dual Mode: Bluetooth and Bluetooth Low Energy (BLE)
Backwards compatible with 1.1, 2.0, 2.1 + EDR and 3.0
Embedded Bluetooth Protocol Stack
Supports HFP, A2DP, AVRCP, PBAP and SPP
Supports IAP1/IAP2 profiles for connection to iOS devices
Simple UART and GPIO interface for command and control
Can connect to external Codecs with I2S, PCM, SPDIF interface
Small form factor (11.8mm x 18mm x 3.2mm)
Bluetooth, FCC and CE certified
Applications
Wireless Speakers, Docks and Headsets
SmartPhone Controlled Audio Systems
Automotive Infotainment Systems
Medical Devices
High Quality Audio Streaming
Gaming Accessories and MP3 Players
BC127 is a highly flexible, low power, small form
factor Bluetooth Version 4.0 Certified Audio
module. It comes preloaded with BlueCreation
Melody software, and is ideal for developers
who want to quickly and cost effectively
integrate Bluetooth functionality into their
products.
Description
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BC127
Datasheet
General Specifications
Specifications Description
Bluetooth Standard Bluetooth 4.0 Class 2
Interfaces UART, AIO, GPIO, USB, SPI, Audio In, Mic In, PCM, I2S, SPDIF, I2C
Size 11.8mm x 18mm x 3.2mm
Weight 1.1g
RF Specifications
Specifications Description
Frequency Band 2,402 MHz to 2,480 MHz
Modulation 8 DPSK, PI/4 DQPSK, GFSK
Maximum Data Rate 3Mbps (typical 1.6Mbps)
Operating Range
20m to 30m
RF Sensitivity 0.1% BER at -88dBm
Transmit Power BER/EDR Class2＜4dBm, BLE＜10dBm
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BC127
Datasheet
Audio Specifications
Specifications Description
DAC resolution 16 bits
DAC Output Sample Rate 8 KHz to 90 KHz
DAC SNR 96dB
Stereo Separation -87.7dB
Electric Specifications
Specifications Description
Supply Voltage 3.3V to 4.7 V DC (Supports Li Ion battery voltage range)
Typical Current 15mA (Music streaming)
Typical Current Idle <1mA (Connectable)
Operating Temperature -40°C to 85°C
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BC127
Datasheet
Module Footprint
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BC127
Datasheet
Placement Considerations
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BC127
Datasheet
Audio Circuit
The Audio circuit consists of:
2 independent 16-bit high-quality ADC channels:
o Programmable as either microphone or line input
o Programmable as either stereo or dual-mono input
o Multiplexed with 2 of the digital microphone inputs
o Each channel is independently configurable to be either single-ended or fully differential
o Each channel has an analog and digital programmable gain stage
A dual differential class A-B output stage. If a single ended audio output is required, use an external
differential to single-ended converter.
The main features of the interface are:
Stereo and mono analog Input for voice band and audio band
Stereo and mono analog output for voice band and audio band
Support for stereo digital audio bus standards such as I2S
Support for IEC-60958 standard stereo digital audio bus standards, e.g. SPDIF and AES3
Support for PCM including PCM master codecs that require an external system clock
The analog Audio diagram is below:
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BC127
Datasheet
PIN Description
No Pin Name Pin Type Pin Description
1 GND GND Common Ground
2 GND GND Common Ground
3 GND GND Common Ground
4 GND GND Common Ground
5 PIO_6 Bi-directional Programmable input/output line
6 PIO_7 Bi-directional Programmable input/output line
7 CAP_SENSE_1 Analog Input Capacitive Touch Sense Input
8 CAP_SENSE_4 Analog Input Capacitive Touch Sense Input
9 CAP_SENSE_3 Analog Input Capacitive Touch Sense Input
10 CAP_SENSE_2 Analog Input Capacitive Touch Sense Input
11 GND GND Common Ground
12 AIO_1 Bi-directional Analog programmable input/output line
13 SPKR_LN Audio output Speaker output negative, left
14 SPKR_LP Audio output Speaker output positive, left
15 SPKR_RN Audio output Speaker output negative, right
16 SPKR_RP Audio output Speaker output positive, right
17 MIC_BIAS_A Analog input Microphone bias
18 MIC_RN Analog input Microphone input negative, right
19 MIC_RP Analog input Microphone input positive, right
20 MIC_LN Analog input Microphone input negative, left
21 MIC_LP Analog input Microphone input positive, left
22 GND GND Common Ground
23 PIO_0 Bi-directional Programmable input/output line
24 PIO_1 Bi-directional Programmable input/output line
25 PIO5 Bi-directional Programmable input/output line
26 PIO_4 Bi-directional Programmable input/output line
27 GND GND Common Ground
28 VREGEN Analogue Take High to Enable Switch-Mode Regulator
29 CHG_EXT Charger input External battery charger control
30 VCHG Charger input Battery Charger Input
31 VBAT_SENSE Battery sense Battery Charger Sense
32 VBAT Battery terminal +ve Battery Positive
33 VDD_PADS Supply Positive Supply input
34 3V3_USB Supply Positive Supply input
35 USB_N Bi-directional USB data negative
36 USB_P Bi-directional USB data positive
37 LED_0 Open drain output LED Driver
38 LED_1 Open drain output LED Driver
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BC127
Datasheet
39 LED_2 Open drain output LED Driver
No Pin Name Pin Type Pin Description
40 UART_CTS Bi-directional UART Clear to Send
41 UART_TX Bi-directional UART TX Data
42 UART_RX Bi-directional UART RX Data
43 UART_RTS Bi-directional UART request to send ,active low
44 RST# Reset Input Reset if low for more than 5ms
45 SPI_PCM# Input Select PCM/SPI
46 PCM_SYNC Bi-directional Synchronous data sync
47 PCM_CLK Bi-directional Synchronous data clock
48 PCM_OUT CMOS output Synchronous data output
49 PCM_IN CMOS input Synchronous data input
50 PIO_2 Bi-directional Programmable input/output line
51 PIO_3 Bi-directional Programmable input/output line
Notes
PIO_X are bidirectional with weak pull down
Reset Input is with strong pull-up
USB data positive with selectable internal 1.5kΩ pull up resistor
UART are Bidirectional with weak pull up
PCM_OUT, IN, SYNC and CLK can be used as SPI_MISO, MOSI, CSB and CLK respectively. SPI-PCM#
high switches SPI/PCM lines to SPI, low switches to PCM/PIO use
Solder Reflow Profile
Preheat Temperature: 150°C for 100 seconds
Temperature: 220°C for 40 seconds.
Single Pass
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BC127
Datasheet
Regulatory Certifications
BC127 is delivered with FCC, CE, IC and Bluetooth SIG certifications. This allows to integrate the module
in an end product without the need to obtain subsequent and separate approvals from these regulatory
agencies. This is valid in the case no other intentional or un-intentional radiator components are
incorporated into the product. Without these certification, an end product cannot be marketed in the
relevant regions.
United States - FCC
In case no other intentional or un-intentional radiator is incorporated, the BC127's FCC certification allows
users to integrate the module into products without the need to obtain subsequent and separate approval.
The BC127 was approved as "intentional transmitter radio module" by the United States' Federal
Communications Commission (FCC) with accordance to CFR47 Telecommunications Part 15, Subpart C,
section 212. This certification is applicable in all the states in the United States.
The certification allows products to be listed in the NRTL (National Recognized Test Laboratory) as
appointed by OSHA (Occupational Safety and Health Administration).
Labelling
The BC127 has been labelled with its own FCC ID number. In order to the extend the certification granted
to the BC127, its FCC ID number must be displayed on the finished product in which the module is
integrated. The following wording should be used "Contains Transmitter Module FCC ID: SSSBC127-X " or
“Contains FCC ID: SSSBC127-X”.
The user-manual for any product in which the BC127 is integrated in must include the following statements:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures: Reorient or relocate the receiving antenna; Increase the separation
between the equipment and receiver; Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected; Consult the dealer or an experienced radio/TV technician for help.
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BC127
Datasheet
To satisfy FCC RF Exposure requirements for mobile and base station transmission devices, a separation
distance of 20 cm or more should be maintained between the antenna of this device and persons during
operation. To ensure compliance, operation at closer than this distance is not recommended. The
antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
For further information regarding the FCC certification requirements please review the following websites:
Federal Communications Commission (FCC):
http://www.fcc.gov
FCC Office of Engineering and Technology (OET) Laboratory Division Knowledge Database (KDB):
http://apps.fcc.gov/oetcf/kdb/index.cfm
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BC127
Datasheet
Europe - CE and RoHS Marking
In case no other intentional or un-intentional radiator is incorporated, the BC127's CE marking certification
allows users to integrate the module into products without the need to obtain subsequent and separate CE
approval.
The BC127 has been tested and granted approval as R&TTE Directive product under the 1999/5/EC
Essential Requirements for Health and Safety (Article (3.1(a)), Electromagnetic Compatibility, (EMC)
(Article 3.1(b)), and Radio (Article 3.2). A Notified Body Opinion has been issued.
The BC127 has also been tested and granted approval under the directive on the restriction of the use of
certain hazardous substances in electrical and electronic equipment 2002/95/EC (commonly referred to as
the Restriction of Hazardous Substances Directive or RoHS). This certification ensures the module is
environmental safe and free from hazardous substances (including Lead).
Both certifications are applicable in all the 27 countries of the European Economic Area.
Labelling and Documentation
Products complying with all relevant essential requirements shall bear the CE conformity marking
accompanied by the identification number XXX-XXX
The RoHS certification does not dictate any specific product labelling. However, we recommend marking
the product with a "RoHS Compliant" statement.
R&TTE Directive requires a manufacturer to establish technical documentation. It must be kept by the
manufacturer or his authorised representative in the EU for at least 10 years after the last product has been
manufactured. The documentation must cover:
a general description of the product,
conceptual design and manufacturing drawings and schemes of components, sub-assemblies,
circuits and other design documentation,
descriptions and explanations necessary for the understanding of said drawings and schemes and the
operation of the product,
a list of the standards referred to in Article 5, applied in full or in part, and descriptions and
explanations of the solutions adopted to meet the essential requirements of the Directive where such
standards
results of design calculations made, examinations carried out, etc.,
test reports.
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BC127
Datasheet
Test reports must include the following table containing the BC127 tests:
Certification Standards Article Laboratory Report
Number Date
Safety EN 60950-
1:2006+A11:2009+A1:2010
(3.1(a))
Health EN 50371:2002-03
EMC EN 301 489-1 V1.8.1 (2008-04);
EN 301 489-17 V2.1.1 (2009-05) (3.1(b))
Radio EN 300 328 V1.7.1 (2006-10) (3.2)
For further labelling and CE marking requirements please review the R&TTE Compliance Association
Technical Guidance: http://rtteca.com/
For further information regarding the R&TTE certification requirements please review the following websites:
Radio and Telecommunications Terminal Equipment (R&TTE):
http://ec.europa.eu/enterprise/rtte/index_en.htm
European Conference of Postal and Telecommunications Administrations (CEPT):
http://www.cept.org
European Telecommunications Standards Institute (ETSI):
http://www.etsi.org
European Radio Communications Office (ERO):
http://www.ero.dk
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BC127
Datasheet
Canada - IC
In case no other intentional or un-intentional radiator is incorporated, the BC127's IC certification allows
users to integrate the module into products without the need to obtain subsequent and separate approval.
The BC127 has been tested and granted approval under Industry Canada (IC) Radio Standards
Specification (RSS) RSS-210, RSSGen and ICES-003. This certification is applicable in Canada.
Labelling and Documentation
The BC127 has been labelled with its own IC ID number. In order to the extend the certification granted to
the BC127, its CE ID number must be displayed on the finished product in which the module is integrated.
The following wording should be used "Contains Transmitter Module IC: XXX"
The user-manual for any product in which the BC127 is integrated in must include the following statements:
This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent
isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec
une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada.
Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut
choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne
dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante
For further labelling and IC marking requirements please review the Industry Canada website:
http://www.ic.gc.ca/
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BC127
Datasheet
Bluetooth Qualification Program (BQP)
In case no other non-certified Bluetooth components are incorporated, the BC127's BQP
marking certification allows users to integrate the module into products without the need to obtain
subsequent and separate approval.
The BC127 has been approved by the Bluetooth Qualification Body (BQB) to use the Bluetooth trademark
and to offer official Bluetooth functionality. The approval according to the V4.0B Bluetooth specification
confirms that the module complies with the Bluetooth specification and will successfully operate with other
products supporting the same profile. BQP certification also ensures that the module has gone through
safety assessment. This certification was granted through a combination of product performance testing
and interoperability testing. This certification applies globally.
Labelling
Products complying with all relevant requirements are allowed to bear the official Bluetooth logo
For further information regarding the BQP certification requirements please review the following websites:
Bluetooth Special Interest Group:
https://www.bluetooth.org/apps/content/
Notes:
Changes or modifications that are made to the module circuitry can hinder the certification
Installers must comply with all of the instructions provided by the certification agency, which indicate
installation and/or operating conditions necessary for compliance
It is important to note that the finished product is required to comply with all applicable authorizations
regulations and requirement that is not associated with the BC127 module, including non-intentional
transmitting modules and other intentionally transmitting modules.
The previous section represents BlueCreation interpretation of the salient issues of the certifications.
For full details of the certification please refer to the local agencies' websites. Where there is any
difference between this document and the local agencies' website, the subsequent should be
followed.
At the time of writing this document FCC, CE and BQP certification were still processed by the
relevant authorities.
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BC127
Datasheet
Ordering Information
Part number BC127
Order number Description
BC127 Class2 Bluetooth 4.0 Module with integrated chip Antenna
BC127-A Class2 Bluetooth 4.0 Module with integrated Antenna and connection to iOS
BC127-DEVKIT-001 Development kit for the BC127 module
BC127-DEVKIT-A-001 Development kit for the BC127-AI module
General Notes
BlueCreation's products are not authorised for use in life-support or safety-critical applications. Use in such
applications is done at the sole discretion of the customer. BlueCreation will not warrant the use of its
devices in such applications.
While every care has been taken to ensure the accuracy of the contents of this document, BlueCreation
cannot accept responsibility for any errors. BlueCreation reserves the right to make modifications,
corrections and any other changes to its products at any time. Customers should obtain the latest
information before placing orders.
BlueCreation, other products, services and names used in this document may have been trademarked by
their respective owners. The publication of this information does not imply that any license is granted under
any patent or other rights owned by BlueCreation.
Refer to www.blue-creation.com for more information. BlueCreation® is a trading name for Cambridge
Executive Limited.
