Hangzhou Gubei Electronics Technology BL3328-P BL3328-P User Manual
Hangzhou Gubei Electronics Technology Co.,Ltd BL3328-P
User manual
BiTrend™ EssentialSeriesWi-Fi Module
Datasheet
BL3328-P
1www.ibroadlink.com
Hangzhou Gubei Electronics Technology Co., Ltd.
Copyright Information
The information contained in this document is the proprietary information of Hangzhou Gubei
Electronics Technology Co., Ltd. (hereinafter referred as BroadLink). Further, no portion of this
document may be altered or edited in any form or by any meanswithout the prior written
consent of BroadLink, the copyrightholder.
Further BroadLink reserves the right to make modifications, additions anddeletions to this
document due to typographical errors, inaccurate information, orimprovements to products
mentioned in the document at any time and without notice. Such changes will, nevertheless be
incorporated into new editions of this document or published as errata sheet.
Version History
V 1.0.0
22/01/2016
1stissue of preliminary document
V1.1.0
2/06/2017
Add some performance parameters
V1.2.0
9/06/2017
Correction of RF parameters and The module packaging size
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Table of Contents
1. Introduction................................................................................................................................... 3
1.1 Overview.............................................................................................................................. 3
1.2 Applications.........................................................................................................................4
1.3 Key Features........................................................................................................................ 4
2. Product Overview......................................................................................................................... 5
2.1 Product Picture....................................................................................................................5
2.2 Block Diagram.....................................................................................................................5
3. Electrical Characteristics...............................................................................................................6
3.1 Absolute Maximum Ratings – Voltage & Current......................................................... 6
3.2Current consumption.......................................................................................................... 6
3.3 Absolute maximum ratings – Temperature.................................................................... 6
3.4Absolute maximum ratings – ESD.....................................................................................7
4. RF Characteristics..........................................................................................................................7
4.1Basic Characteristics............................................................................................................ 7
4.2 IEEE802.11b Mode..............................................................................................................7
4.3 IEEE802.11g Mode..............................................................................................................8
4.4 IEEE802.11n 20Mhz Bandwidth Mode.............................................................................9
4.5 IEEE802.11n 40Mhz Bandwidth Mode.............................................................................9
5. Mechanical Characteristics........................................................................................................ 10
6. Module Interfaces.......................................................................................................................11
6.1 PIN Layout......................................................................................................................... 11
6.2 PIN Definitions.................................................................................................................. 11
7. Reference Design........................................................................................................................ 13
8.1 Antenna Selection............................................................................................................ 14
8.2 Minimizing Radio Interference....................................................................................... 15
8.3 Specification of On-Board Antenna...............................................................................15
Appendix A Glossary（Quentin respible）.................................................................................16
Appendix B Reference paper（Quentin respible）................................................................... 18
Contact Us........................................................................................................................................18
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1. Introduction
1.1 Overview
BiTrend™Essentialis the industrial leading 2.4Ghz 802.11 b/g/n embedded Wi-Fi module which
delivers unmatched performance and codeless development in a compact package, providing
a quick, easy and cost effective way for developers and manufacturers to add Wi-Fi connectivity
for home automation, lighting control, energy efficiency and other IOT applications.
BiTrend ™Essential family combines a 2.4Ghz 802.11 b/g/n radio transceiver with a 32-bit
microprocessor and embedded with MAC, baseband processing and optimized Wi-Fi network
stack. It is an ideal solution for developers and manufacturers with limited RF and embedded
programming expertise as it significantly reduces RF design time and removes the burden of
testing and certification.
Benefitted from BroadLink’s turn-key solution, BiTrend™ Essential is an ideal solution for
developers with limited Wi-Fi or RF expertise or for those seeking faster time to market. It
reduces RF design time and removes the burden of testing and certification. BiTrend™ Essential
is fully compliant with IEEE 802.11 b/g/n standard and certified with CE, FCC and RoHS.
BiTrend™ Essential is a highly integrated Wi-Fi SoC(system on Chip) single chip, which
supportsIEEE802.11b/g/n single stream, providing GPIO for intelligent control, and UART
interfaces for device communication.
BiTrend™ Essential has 8Mbits flash and integrates power amplifier, low noise amplifier, and RF
switch to reduce the module size and RF design capability required. And also integrate power
manage unit for single 3.3V power source for cost effective design.
BiTrend™ Essential embedded 32-bit RISC MCU for 802.11b/g/n drivers, supplicant, TCP/IP
protocol stack, and networking applications, can be operated in station mode and softAP mode.
The 3328-P is an ideal solution for embedded device to enable networking service with
minimized design effort.
Figure 1. 3328-P block diagram
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1.2 Applications
Smart home appliances
Remote Control
Medical/Health Care
Network consumer devices
1.3 Key Features
a．Support IEEE802.11b/g/n
Frequency Range
2.412 GHz - 2.484 GHz
Wi-Fi Standard
IEEE 802.11 b/g/n
Transmitter Power
802.11b:18dBm
802.11g:16dBm
802.11n:15dBm
MIN Receiver Sensitivity
802.11b<-82dBm@11Mbps
802.11g<-72dBm@54Mbps
802.11n<-71dBm@MCS7
Data rate
11M@802.11b, 54M@802.11g, MCS7@802.11n
Security
Encryption Standard：WEP/WEPA/WPA2
EncryptionAlgorithm：WEP64/WEP128/TKIP/AES
Wi-Fi Modes
STA/AP/STA+AP/WIFI Direct
b．Support UART\PWM\ADC\GPIO\I2C port
c．Support STA\AP\AP+STA
d．Patent Smart Config™ technology
e．Support TLS\SSL\mDNS
f．PCB printed antenna
Antenna type
PCB printed ANT
g．Power source: 3.3V
h．Dimension （L*W*H) : 31mm*17.7mm*3.6mm (Including shielding cover height)
i．ESD: 2KV
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3. Electrical Characteristics
3.1 Absolute Maximum Ratings – Voltage & Current
Using products above the absolute maximum ratings may cause permanent damage to the
device. These are maximum ratings only and functional operation of the device at these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect the reliability of the device.
Symbol
Description
Min.
Max.
Units
Ts
Storage temperature
-40
125
℃
TAMBIENT
Ambient Temperature
-10
80
℃
Vdd
Supply voltage
3.0
3.6
V
Vio
Voltage on IO pin
0
3.3
V
VESD
HBM(human body model)
2000
V
3.2Current consumption
Symbol
Condition
Performance
TYP
Unit
IRF_Standby(SP mini)
IDLE mode
46
mA
IRF_b
pulse current @TX
11b @18dBm 11Mbps
265
mA
IRF_g
pulse current @TX
11g @16dBm 54Mbps
216
mA
IRF_n
pulse current @TX
11n @15dBm MCS7
212
mA
Note: All result is measured at the antenna port and VDD33 is 3.3V
3.3 Absolute maximum ratings – Temperature
Symbol
Rati
ngs
Max
Unit
T
STG
Storagetemperature
–40 to+125
℃
T
A
Workingtemperature
-10 to+80
℃
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Humidity
Non condensing, relative humidity
90%（RH）
3.4Absolute maximum ratings – ESD
Symbol
Ratings
Conditions
Class
Max
Unit
V
ESD
(HBM)
Electrostatic discharge
voltage
(human body model)
TA = +25 °C
conforming to
JESD22-A114
2
2000
V
4. RF Characteristics
4.1Basic Characteristics
Item
Specification
OperatingFrequency
2.412 GHz - 2.484 GHz
Wi-FiStandard
IEEE 802.11b/g/n
ModulationType
11b: DBPSK, DQPSK,CCK for DSSS
11g: BPSK, QPSK, 16QAM, 64QAM for OFDM
11n: MCS0~7,OFDM
Data Rates
11b:1,2,5.5and 11Mbps
11g:6,9,12,18,24,36,48 and 54 Mbps
11n:MCS0~7,up to150Mbps
Antennatype
PCB printed ANT
4.2 IEEE802.11b Mode
Item
Specification
ModulationType
DSSS/CCK
Frequencyrange
2412MHz~2484MHz
Channel
CH1 toCH14
Datarate
1,2,5.5,11Mbps
TX Characteristics
Min
Typical
Max.
Unit
Transmitter Output Power
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@11Mbps
18
dBm
Frequency Error
-10
+10
ppm
Constellation Error( peak EVM)@ target power
@11Mbps
-37
Transmit spectrum mask
Pass
RX Characteristics
Min
Typical
Max.
Unit
Minimum Input Level Sensitivity
11Mbps (FER≦8%)
-83
dBm
Maximum Input Level (FER≦8%)
-10
dBm
4.3 IEEE802.11g Mode
Item
Specification
ModulationType
OFDM
Frequencyrange
2412MHz~2484MHz
Channel
CH1 toCH14
Datarate
6,9,12,18,24,36,48,54Mbps
TX Characteristics
Min
Typical
Max.
Unit
Transmitter Output Power
@54Mbps
16
dBm
Frequency Error
-10
+10
ppm
Constellation Error( peak EVM)@ target power
@54Mbps
-32
dB
Transmit spectrum mask
Pass
RX Characteristics
Min
Typical
Max.
Unit
Minimum Input Level Sensitivity
@54Mbps
-71.5
dBm
Maximum Input Level (FER≦10%)
-10
dBm
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4.4 IEEE802.11n 20Mhz Bandwidth Mode
Item
Specification
ModulationType
OFDM
Frequencyrange
2412MHz~2484MHz
Channel
CH1 toCH14
Datarate
MCS0/1/2/3/4/5/6/7
TX Characteristics
Min
Typical
Max.
Unit
Transmitter Output Power
@HT20, MCS7
15
dBm
Frequency Error
-10
+10
ppm
Constellation Error( peak EVM)@ target power
@HT20, MCS7
-33
dB
Transmit spectrum mask
Pass
RX Characteristics
Min
Typical
Max.
Unit
Minimum Input Level Sensitivity
@HT20, MCS7
-71
dBm
Maximum Input Level (FER≦10%)
-20
dBm
4.5 IEEE802.11n 40Mhz Bandwidth Mode
Item
Specification
ModulationType
OFDM
Frequencyrange
2412MHz~2484MHz
Channel
CH1 toCH14
Datarate
MCS0/1/2/3/4/5/6/7
TX Characteristics
Min
Typical
Max.
Unit
Transmitter Output Power
@HT40, MCS7
14.5
dBm
Frequency Error
-10
+10
ppm
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Pin4
UART_TX
UART Only for Passthrough
GPIO22
I/O
Pin5
UART_RX
UART Only for Passthrough
GPIO21
I/O
Pin6
TX2
UART Only for Passthrough
GPIO12
I/O
I2S_TX
I2S Port
Pin7
RX2
UART Only for Passthrough
GPIO11
I/O
I2S_RX
I2S Port
Pin8
RTC_EINT
Wake up only for module RTC mode
Pin9
GPIO4
I/O
I2S_MCLK
I2S Port
Pin10
GPIO3
I/O
TX1
UART Only for Passthrough
I2S_CK
I2S Port
Pin11
GPIO2
I/O
RX1
UART Only for Passthrough
Pin12
GPIO13
I/O
I2S_WS
I2S Port
Pin13
VCC
3.3V
Pin14
GND
Pin15
GPIO14
I/O
Pin16
GPIO17
I/O
AUXADC0
Pin17
I2C1_SCL
I2CPort
GPIO15
I/O
Pin18
I2C1_SDA
I2C Port
GPIO16
I/O
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7. Reference Design
If the peripheral MCU uses power source of 5V,it needs to add a level switching circuit in the
connection of the serial port and the related circuit.
The module needs a large current about 300mA when transmitting data,please ensure that the
power source can provide sufficient current.
WIFI MODULE
Peripheral MCU
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8. AntennaCharacteristics
8.1 Antenna Selection
The WT1SBSL supports on-board PCB printed antenna.When the Operating Frequencyis
between 2.4G~2.5GHz, S11 of antenna port is less than-10dB and peak gainis about 1. 5dBi.
Figure 7. Antenna radiation pattern simulation
Figure 8. Antenna port S11simulation curve
In practical use, 3328-P is welded on user’s boardand value of S11 has some changes.
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8.2 Minimizing Radio Interference
When integrating the Wi-Fi module with on board PCB printed antenna, make sure the three
points below:
1. The area under the antenna end of the module should be keep clear of metallic components,
connectors, vias, traces and other materials that can interfere with the radio signal.
2. The area around the antenna end the module protrudes at least 10mm from the mother
board PCB and any metal enclosure.
3. When planning PCB layout, it is recommended that user places the antenna of Wi-Fi module
as close as possible to the edge of boarder to ensure the good performance of antenna, which
is shown in the picture below.
8.3 Specification of On-Board Antenna
OperatingFrequency
2.4G~2.5GHz
VSWR(max)
2
Peak Gain
1.5dBi
AntennaType
PIFA
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Appendix A Glossary（Quentin respible）
ADC
Analog-to -Digital Converter
AES
Advanced Encryption Standard
ANT
Antenna
AP
Wireless Access Point
BPSK
Binary Phase Shift Keying
DBPSK
Differential binary phase shift keying
DC
Direct Current
CC
K
Complementary Code Keying
CDM
Charge Device Model
DHCP
Dynamic Host Configuration Protocol
CMOS
Complementary Metal Oxide Semiconductor
DNS
Determination of non-significance
DQPSK
Differential quadrature phase shift keying
DSSS
Demand assigned signaling and switching subsystem
DTIM
Digital Transmission Interface Module
EMSP
Enhanced Modular Signal Processor
ESD
Electrostatic Discharge
EVM
Error Vector Magnitude
FCC
Federal Communications Commission
FER
Floating Error
GND
Ground
GPIO
General Purpose Input/Output
HBM
Human body model
IEEE
Institute of Electrical and Electrionics Engineers
IO
Input/Output
IOT
Individual operation test
IPv4
Internet Protocol version 4
LED
Light-emitting diode
LVTTL
Low Voltage Transistor Transistor Logic
MAC
Medium Access Control layer
MCS
Modulation and coding scheme
MCU
Microcontroller Unit
MIMO
Multiple-Input Multiple-Output
MSL
Multilayer Switching Protocol
NC
Numerical Control
NRST
Negative Reset
OF
DM
Orthogonal Frequency Division Multiplexing
OSC
Oscillator
PCB
Printed Circuit Board
PIFA
Planar inverted F antenna
QPSK
Quadrature Phase Shift Keyin
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RC
Resistance- capacitance
RF
Radio Frequency
RISC
Reduced Instruction Set Computer
RoHS
Restriction of Hazardous Substances
RX
Receiver
SDIO
Serial Digital Input/Output
SoC
System on Chip
SPDT
Single-Pole Double-Throw
SPI
Serial Peripheral Interface
STA
Spanning Tree Algorithm
TCP
Transfer Control Protocol
TKIP
Temporal Key Integrity Protocol
TX
Transmitter
IP
Internet Protocol
UART
Universal Asynchronous Receiver/Transmitter
UDP
User Datagram Protocol
UFL
a miniature coaxial RF connector for high-frequency signals
manufactured by Hirose Electric Group
VSWR
Voltage Standing Wave Ratio
WEP
Wired Equivalent Privacy
WEPA
Welded Electronic Packaging Association
WEP64
64 bit Wired Equivalent Privacy
WEP128
128 bit Wired Equivalent Privacy
WPA2
Wi-Fi Protected Access 2
XTAL
External Crystal Oscillator
QAM
Quadrature Amplitude Modulation
802.11 b/g/n
The IEEE 802.11 b/g/n
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Appendix B Reference paper（Quentin respible）
[1] IEEE 802.11b/g/n- published IEEE 802.11-2007wireless networking standard and
published IEEE 802.11-2012 standard for Information technology - Clause 19 of the
publishedIEEE 802.11-2007 standard, and Clause 19 of the published IEEE
802.11-2012 standard.
Contact Us
Hangzhou Gubei Electronics Technology Co., Ltd.
Room 106, Building 1, No. 611 Jianghong Road, Binjiang, Hangzhou, Zhejiang, P.R.China
T: +86-571-85159281 F: +86-571-86631817
E: intl@broadlink.com.cn W: www.ibroadlink.com.cn
This device complies with Part 15 of the FCC Rules / Industry Canada licence-exempt
RSS standard(s). Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
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.
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Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the
equipment.
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.
MPE Requirements
To satisfy FCC / IC RF exposure requirements, a separation distance of 20 cm or more should be
maintained between the antenna of this device and persons during device operation.
To ensure compliance, operations at closer than this distance is not recommended.
Les antennes installées doivent être situées de facon à ce que la population ne puisse
y être exposée à une distance de moin de 20 cm. Installer les antennes de facon à ce
que le personnel ne puisse approcher à 20 cm ou moins de la position centrale de l’
antenne.
La FCC des éltats-unis stipule que cet appareil doit être en tout temps éloigné d’au
moins 20 cm des personnes pendant son functionnement.
Region Selection
Limited by local law regulations, version for North America does not have region selection option.
Information for the OEM Integrators
This device is intended for OEM integrators only. Please see the full grant of
equipment document for restrictions.
Label Information to the End User by the OEM or Integrators
