Cambridge Executive BC188-X Wi-Fi Module User Manual BC188 DATASHT 004 2x
Cambridge Executive Limited Wi-Fi Module BC188 DATASHT 004 2x
Users Manual
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BC188-DATASHT
BC188 Datasheet
Key Specifications
Low Power Wi-Fi module with Microcontroller and Antenna
Cortex-M4F CPU with integrated 512KB SRAM, 320KB ROM, 8Mbit Flash
Ultra Low Power modes (Deep Sleep, Standby)
IEE 802.11n/g/b, 1x1 SISO, 2.4 GHz and HT20
Antenna Diversity
Embedded Stack and TCP/IP, Simple UART interface
3xI2S, 3xSPI, 2xI2C, 3xUART, QSPI, Up to 35 GPIOS, 2 x Wake
2 Step ADC with PGA, 2 Channel or 1 Diff channel DAC
Small form factor (22mm x 15.5mm x 1.5mm)
Applications
White Goods/Appliances
Consumer Devices and Accessories
Home Automation
Personal Health Devices
IoT and Wearables
Commercial and Industrial
BC188 is a highly flexible, low power, small form
factor self contained Wi-Fi module. It comes
preloaded with BlueCreation Melody-Wi-Fi
software, and is ideal for developers who want to
quickly and cost effectively integrate Wi-Fi
functionality into their products.
Description
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General Specifications
Specifications Description
Wi-Fi 802.11 b.g.n.d.e.h.i.k.r.w
Interfaces UART, AIO, GPIO, SPI, PCM, I2S, SPDIF, I2C
Size 22mm x 15.5mm x 1.5mm
Weight 0.9g
Wi-Fi Specifications
Specifications Description
Encryption WEP 64 and 128 bit encryption (WPA), AES-CCMP, WAPI
Frequency Range 2400 to 2500 MHz
Maximum Data Rate 72.2Mbps, 20 MHz channels
Tx output saturation 26dBm
Rx input IP3 -15dBm
Phase Noise -103dBc/Hz
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Audio Specifications
Specifications Description
DAC output range 0.12V to 1.6V
Common ADC Input 0.9V (Typical)
Electric Specifications
Specifications Description
Supply Voltage 3.0V to 3.6 V DC (Supports Li Ion battery voltage range)
Typical Current (Sleep) 36µA
Typical Current
(PowerSave)
0.4mA
Operating Temperature -40°C to 85°C
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Module Footprint
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PIN Description
No Pin Name Primary Function Secondary Function
1 GND GND GND
2 ANT_CTRL1 Output ANT_CTRL1 General Purpose IO44
3 ANT_CTRL0 Output ANT_CTRL0 General Purpose IO 45
4 GND GND GND
5 RF_EXT External RF Connection NA
6 GND GND GND
7 UART_CTS/GPIO_0 UART Clear To Send via GPIO_0
8 UART_RTS/GPIO_1 UART Ready To Send via GPIO_1
9 UART_TX/GPIO_2 UART Transmit via GPIO_2
10 UART_RX/GPIO_3 UART Receive via GPIO_3
11 VDDIO_0 Supply input for GPIOs NA
12 VDDIO_1 Supply input for GPIO16 NA
13 GND GND GND
14 GND GND GND
15 GND GND GND
16 GPIO_16 General Purpose IO 16 CON5 Configuration Pin 5
17 GND GND GND
18 GND GND GND
19 GPIO23 General Purpose IO 23 Wake Up 1
20 GPIO22 General Purpose IO 22 Wake Up 0
21 GPIO24 General Purpose IO 24 General Purpose Timer 1 Channel 5
22 GND GND GND
23 GND GND GND
24 GND GND GND
25 VBAT Battery Supply Input NA
26 RST# Module Reset (Active Low) NA
27 GPIO25 XTAL_32k CLK IN GPIO25
28 GPIO26 XTAL_32k CLK OUT GPIO26
29 GND GND GND
30 QSPI_D1/GPIO31 Flash SPI Data I/O 1 GPIO31
31 QSPI_CLK/GPIO29 Flash SPI Clock GPIO29
32 VDDIO_2 Supply input for QSPI I/O NA
33 GND GND GND
34 QSPI_D2/GPIO32 Flash SPI Data I/O 2 GPIO32
35 QSPI_D3/GPIO33 Flash SPI Data I/O 3 GPIO33
36 QSPI_D0/GPIO30 Flash SPI Data I/O 0 GPIO30
37 QSPI_SSN/GPIO28 Flash SPI Chip Select GPIO28
38 GPIO27 General Purpose IO 27 CON4 Configuration Pin 4
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No Pin Name Pin Type Pin Description
39 GND GND GND
40 GND GND GND
41 GND GND GND
42 GND GND GND
43 VDDIO_3 Supply input for GPIO NA
44 GPIO40 General Purpose IO 40 NA
45 GPIO39 General Purpose IO 39 General Purpose Timer 3 Clock Input
46 GND GND GND
47 GPIO41 General Purpose IO 41 NA
48 GPIO42 General Purpose IO 42 NA
49 GPIO43 General Purpose IO 43 NA
50 GPIO46 General Purpose IO 46 NA
51 GPIO47 General Purpose IO 47 NA
52 GPIO48 General Purpose IO 48 NA
53 GPIO49 General Purpose IO 49 NA
54 GPIO7 General Purpose IO 7 JTAG Test Clock
55 GPIO6 General Purpose IO 6 JTAG Test Data Output
56 GPIO5 General Purpose IO 5 I2C0_SCL
57 GPIO4 General Purpose IO 4 I2C0_SDA
58 GPIO8 General Purpose IO 8 JTAG Test Mode State
59 GPIO9 General Purpose IO 9 JTAG Test Data Input
60 GPIO10 General Purpose IO 10 JTAG Test Reset (Active Low)
61 3V3 3V3 Supply Input NA
62 GND GND GND
Notes
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Hardware Design Guideline
Application Schematic
Net Minimum Typical Maximum Absolute Maximum**
VBAT 3.0V* 3.3V 3.60V 3.63V
3V3 2.97V 3.3V 3.63V 4.00V
VDDIO_0 2.97V 3.3V 3.60V 3.63V
VDDIO_1 2.97V 3.3V 3.60V 4.00V
VDDIO_2 2.97V 3.3V 3.60V 4.00V
VDDIO_3 2.97V 3.3V 3.60V 3.63V
*This is the minimum voltage allowed to enable the module in the boot modes described below.
**Operation above this level of voltage may damage the device.
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BC188 Datasheet
Boot Modes
All supplies (VBAT Pin 25, 3V3 Pin 61 and VDDIO Pins 11,12, 32 & 43) should be applied simultaneously. No digital
pins (GPIO, UART, I2C etc.) should be powered externally without first applying VDDIO_X.
The entire module is in a reset state during power on when, internal PMU detection circuit detects the voltage rising on
VBAT.
RESET Mode
The Module is reset by applying a minimum of a 80us active low pulse to RST# (Pin26). An internal PMU detection
circuit detects when RST# is pulled low and powers on when RST# >1.25V. Pulling RST# low resets the entire module.
Power Down Modes
Several power down modes are supported
GPIOs
Unused PIOs should be left floating.
UART
The BC188 is controlled by GPIOs. This can be configured. If GPIO control is not used, these GPIOs should be left
floating. The UART by default does not use RTS/CTS flow control. If the users do not expect to use it, these lines should
be left floating.
EXT_RF
If the External RF Port is not used terminate with a 51Ohm 1% resistor to ground.
The external RF port is internally DC Blocked and can be used as a external RF connection for test purposes or as an
additional antenna where higher gain or range is required than that supported by the internal antenna on the module.
Digital Pin States on RESET or after Power Up
The following table shows the Digital Pin States on RESET or after power up.
Pin Name / Group I/O Type State after Power Up or RESET
UART_RX Digital bi-directional with PU Strong PU
UART_TX Digital bi-directional with PU Weak PU
UART_CTS Digital bi-directional with PD Weak PD
UART_RTS Digital bi-directional with PU Weak PU
GPIOX Digital bi-directional with PU Weak PU
RST# Digital input with PU Strong PU
PD = Pull Down, PU = Pull Up
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Solder Reflow Profile
The solder profile is described below.
Zone A: Preheat: This raises the temperature at a controlled rate, typically 0.5 - 2C/s. This will preheat the component to
120°C to 150°C to distribute the heat uniformly to the PCB.
Zone B: Equilibrium1: In this zone, the flux becomes soft and uniformly spreads solder particles over the PCB board,
preventing re-oxidisation. The recommended temperature for this zone is 150°C to 200°C for 60s to 120s.
Zone C: Equilibrium2: This is optional and in order to resolve the upright component issue. Temperature is 210°C to
217°C for 20s to 30s.
Zone D: Reflow zone: The temperature should be high enough to avoid wetting but low enough to avoid component
deterioration. The recommended peak temperature is 230°C to 250°C. The soldering time should be 30s to 90s when
the temperature is above 217°C.
Zone E: Cooling: The cooling rate should be fast to keep the solder grains small which will give a longer lasting joint. A
typical cooling rate is 4°C/s.
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BC188 Datasheet
Regulatory Certifications
BC188 is delivered with FCC, CE and IC 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 BC188's FCC certification allows users to
integrate the module into products without the need to obtain subsequent and separate approval.
The BC188 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 BC188 has been labelled with its own FCC ID number. In order to extend the certification granted to the BC188,
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: SSSBC188-X “or “Contains FCC ID: SSSBC188-
X”.
The user-manual for any product in which the BC188 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.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this
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BC188 Datasheet
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
To satisfy FCC RF Exposure requirements for mobile and base station transmission devices, a separation distance of
70mm 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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Europe - CE and RoHS Marking
In case no other intentional or un-intentional radiator is incorporated, the BC188's CE marking certification allows
users to integrate the module into products without the need to obtain subsequent and separate CE approval.
The BC188 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 BC188 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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Test reports must include the following table containing the BC188 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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Canada - IC
In case no other intentional or un-intentional radiator is incorporated, the BC188's IC certification allows users to
integrate the module into products without the need to obtain subsequent and separate approval.
The BC188 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 BC188 has been labelled with its own IC ID number. In order to extend the certification granted to the BC188, 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 BC188 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
Radiation Exposure Statement:
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance 45mm between the radiator & your body.
Déclaration d'exposition aux radiations:
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Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non
contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 45mm de distance entre la source de
rayonnement et votre corps.
For further labelling and IC marking requirements please review the Industry Canada website: http://www.ic.gc.ca/
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 BC188 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 and CE certification were still processed by the relevant authorities.
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BC188 Datasheet
WLAN
Overview
The BC188 integrates a highly integrated, single-band (2.4 GHz) IEEE 802.11n 1x1 WLAN subsystem, specifically
designed to support next generation, high throughput data rates.
The subsystem provides the combined functions of CPU, memory, Medium Access Controller (MAC), Direct Sequence
Spread Spectrum (DSSS) and Orthogonal Frequency Division Multiplexing (OFDM) baseband modulation, direct
conversion WLAN RF radio, and encryption. For security, the 802.11i security is supported through several protocols.
Features
1x1 SISO, 2.4 GHz, HT20 operation
Antenna diversity
CMOS and low-swing sine wave input clock
Low power with deep sleep and standby modes
Pre-regulated supplies
Integrated T/R switch, PA, and LNA
Optional 802.11n features
One Time Programmable (OTP) memory to eliminate need for external EEPROM
WLAN MAC
Simultaneous peer-to-peer and infrastructure Modes
RTS/CTS for operation under DCF
Hardware filtering of 32 multicast addresses
On-chip Tx and Rx FIFO for maximum throughput
Open System and Shared Key Authentication services
A-MPDU Rx (de-aggregation) and Tx (aggregation)
Reduced Inter-Frame Spacing (RIFS) receive
Management information base counters
Radio resource measurement counters
Quality of service queues
Block acknowledgment extension
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Multiple-BSSID and Multiple-Station operation
Transmit rate adaptation
Transmit power control
Long and short preamble generation on a frame-by-frame basis for 802.11b frames
WLAN Baseband
802.11n 1x1 SISO
Backward compatibility with legacy 802.11g/b technology
PHY data rates up to 72.2 Mbps
20 MHz bandwidth/channel
Modulation and Coding Scheme (MCS)-MCS 0~7
Radio resource measurement
Optional 802.11n SISO features
1 spatial stream STBC reception and transmission
Short guard interval
RIFS on receive path 802.11n packets
802.11n greenfield Tx/Rx
Power save features
WLAN Radio
The BC188 direct conversion WLAN RF radio integrates all the necessary functions for transmit and receive operation.
Features Include:
Integrated direct-conversion radio
20 MHz channel bandwidth
Integrated T/R switch, PA, and LNA.
WLAN Rx Path
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Direct conversion architecture eliminates need for external SAW filter
On-chip gain selectable LNA with optimized noise figure and power consumption
High dynamic range AGC function in receive mode
WLAN Tx Path
Integrated power amplifier with power control
Optimized Tx gain distribution for linearity and noise performance
WLAN Local Oscillator
Fractional-N for multiple reference clock support
Fine channel step
Channel Frequencies Supported
20 MHz Channels
Channel Frequency (GHz
1 2.412
2 2.417
3 2.422
4 2.427
5 2.432
6 2.437
7 2.442
8 2.447
9 2.452
10 2.457
11 2.462
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12 2.467
13 2.472
WLAN Encryption
WEP 64- and 128-bit encryption with hardware TKIP processing (WPA)
AES-CCMP hardware implementation as part of 802.11i security standard (WPA2)
Enhanced AES engine performance
AES-Cipher-Based Message Authentication Code (CMAC) as part of the 802.11w security standard
WLAN Authentication and Privacy Infrastructure (WAPI)
Ordering Information
Part number BC188
Order number Description
BC188 WiFi Module with integrated PCB Antenna
BC188-DISKIT-001 Development kit for the BC188 module
General Notes
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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.bluecreation.com for more information. BlueCreation® is a trading name for Cambridge Executive
Limited.