BroadLink BL3383-P User manual

World’s leading smart home solution provider
Features
100MHz 32bits MCU
256KB SRAM/2MB FLASH
Support AES, MD5, SHA1
Support XIP
Working voltage: DC 3.3V
Support BLE4.2
Wi-Fi related features
Support 802.11 b/g/n standard
Support station and soft AP
Support SmartConfig and AP
configuration
Support WEP/WPA2
Support multiple cloud services
Integrated balun/PA/LNA
TCP/IP stack optimized for IoT
application
PCB antenna
Peripherals:
 3x UART
1x SPI
8x PWM
Up to 13GPIOs
Working temperature: 0℃to +85℃
Stamp style SMD for surface mounting
production
Applications
Smart transportation
Smart home / appliances
Instruments
Health care
Industrial automation
Intelligent security
Smart energy
Model
Model
Antenna type
Note
BL3383-P
PCB antenna
Default
Embedded Wi-Fi Module
Version：1.1 Release date：May 06, 2021
BL3383-P
Product
Manual

- 2 -
Content
1. Overview............................................................................................................................ - 3 -
2. Basic Specifications............................................................................................................ - 3 -
2.1. Power Consumption................................................................................................... - 3 -
2.2. Working Environment ................................................................................................ - 4 -
3. Radio Specifications........................................................................................................... - 4 -
3.1. Basic Radio Specification............................................................................................ - 4 -
3.2. Radio Performance..................................................................................................... - 5 -
3.2.1 IEEE802.11b.......................................................................................................... - 5 -
3.2.2 IEEE802.11g .......................................................................................................... - 6 -
3.2.3 IEEE802.11n.................................................................................................... - 6 -
4. BL3383-P Hardware Information....................................................................................... - 7 -
4.1. PIN Sequence.............................................................................................................. - 7 -
4.2. PIN Definitions............................................................................................................ - 8 -
4.3 Recommendations....................................................................................................... - 9 -
4.4. Mechanical Dimensions............................................................................................ - 10 -
4.5. Recommended Pad Size ........................................................................................... - 11 -
4.6. Certifications ............................................................................................................ - 11 -
4.7. Label ......................................................................................................................... - 12 -
4.7. Mechanical Dimensions............................................................................................ - 12 -
4.8. Packaging.................................................................................................................. - 13 -
5. Reference Design............................................................................................................. - 14 -
5.1. UART Interface Design.............................................................................................. - 14 -
5.2. Power Supply Requirement...................................................................................... - 16 -
Revision History................................................................................................................... - 20 -
Copyrights............................................................................................................................ - 20 -
Contact Us ........................................................................................................................... - 20 -

- 3 -
1. Overview
BL3383-P is a cost-effective embedded Wi-Fi module designed by BroadLink, highly integrated
with 32-bit MCU speed up to 100MHz, 256KB SRAM and 2MB flash, with 3.3V power supply.
The module integrates radio transceiver, MAC, baseband, all Wi-Fi protocols, configurations and
network stack. It can be widely used in applications like smart home devices, remote monitoring
devices and medical care instruments.
2. Basic Specifications
2.1. Power Consumption
Please refer to Table 1 for power consumption data.
Table 1 BL3383-P Power Consumption Data
Specifications
Min.
Typ.
Max.
Units
VDD
3.0
3.3
3.6
V
VIL(input low voltage)
0.8
V
VIH(input high voltage)
2.0
3.6
V
VOL(output low voltage)
0.4
V
VOH(output high voltage)
2.4
3.6
V
Standby (RX)
60
mA
pulse current @TX
11b @17.5dBm 11Mbps
280
mA
pulse current @TX
11g @15.5dBm 54Mbps
245
mA
pulse current @TX
11n @15.5dBm 65Mbps
245
mA

- 4 -
BLE @4dBm
150
2.2. Working Environment
Please refer to Table 2 for working environment data.
Table 2 BL3383-P Working Environment Data
Symbol
Description
Min.
Max.
Units
Ts
Storage temperature
-40
125
℃
TA
Ambient operating temperature
0
85
℃
Vdd
Supply voltage
3.0
3.6
V
Vio
Voltage on IO pin
0
3.6
V
3. Radio Specifications
3.1. Basic Radio Specification
Please refer to Table 3 for radio specification.
Table 3 BL3383-P Radio Specification
Radio range
2402-2480MHz
Wireless standards
IEEE 802.11 b/g/n
Radio output (conductive)
802.11b:18.6±1.5dBm@11Mbps
802.11g: 16.81±1.5dBm@54Mbps
802.11n: 16.9±1.5dBm@MCS7/HT20
BLE: 4±2dBm
Antenna type
Internal: PCB antenna
External: Not supported
Receiving sensitivity
802.11b≦-89dBm@11Mbps
802.11g≦-76dBm@54Mbps
802.11n/HT20≦-73dBm@MCS7
Stack
IPv4, TCP/UDP/FTP/HTTP/HTTPS/TLS/mDNS

- 5 -
Data rate (max)
11M@802.11b, 54M@802.11g, MCS[email protected]
Security
Encryption standard: Open/WEP-Open/WPA/WPA2
Encryption algorithm: WEP64/WEP128/TKIP/AES
Network types
STA/AP
3.2. Radio Performance
3.2.1 IEEE802.11b
Table 4 Basic specifications under IEEE802.11b
ITEM
Specification
Modulation Type
DSSS / CCK
Frequency range
2412 MHz~ 2462 MHz
Channel
CH1 to CH11
Data rate
1, 2, 5.5, 11Mbps
Table 5 Transmitting performance under IEEE802.11b
TX Characteristics
Min.
Typical
Max.
Unit
Power@11Mbps
17.5
dBm
Frequency Error
-10
+10
ppm
EVM@11Mbps
-14
dB
Transmit spectrum mask
Pass
Table 6 Receiving performance under IEEE802.11b
RX Characteristics
Min
.
Typical
Max.
Unit
11Mbps Input Level Sensitivity
Minimum Input Level (FER≦8%)
-89
dBm

- 6 -
3.2.2 IEEE802.11g
Table 7 Basic specifications under IEEE802.11g
ITEM
Specification
Modulation Type
OFDM
Frequency range
2412 MHz~ 2462 MHz
Channel
CH1 to CH11
Data rate
6, 9, 12, 18, 24, 36, 48, 54Mbps
Table 8 Transmitting performance under IEEE802.11g
TX Characteristics
Min.
Typical
Max.
Unit
Power@54Mbps
16
dBm
Frequency Error
-10
+10
ppm
EVM@54Mbps
-30
dB
Transmit spectrum mask
Pass
Table 9 Receiving performance under IEEE802.11g
RX Characteristics
Min
.
Typical
Max.
Unit
54Mbps Input Level Sensitivity
Minimum Input Level (FER≦10%)
-76
dBm
3.2.3 IEEE802.11n
IEEE802.11n 20MHz bandwidth mode
Table 10Basic specifications under IEEE802.11n with 20MHz
ITEM
Specification

- 7 -
Modulation Type
OFDM
Frequency range
2412 MHz~ 2462 MHz
Channel
CH1 to CH11
Data rate
MCS0/1/2/3/4/5/6/7
Table 11 Transmitting performance under IEEE802.11n with 20MHz
TX Characteristics
Min.
Typical
Max.
Unit
Power@HT20, MCS7
15.5
dBm
Frequency Error
-10
+10
ppm
EVM@HT20, MCS7
-30
dB
Transmit spectrum mask
Pass
Table 12 Receiving performance under IEEE802.11n with 20MHz
RX Characteristics
Min
.
Typical
Ma
x.
Unit
MCS7 Input Level Sensitivity
Minimum Input Level (FER≦10%)
-73
dBm
4. BL3383-P Hardware Information
4.1. PIN Sequence
Please refer to Fig 1 for the pin sequence.

- 8 -
Fig 1 BL3383-P pin sequence
4.2. PIN Definitions
Please refer to Table 13 for pin definitions.
PIN
Function
1
Function
2
Function
3
Function
4
Function
5
1
GDN
2
VDD
3
RST
4
GPIO14
TX0
5
GPIO13
RX0
6
GPIO16
TX2
SI-SCL
7
GPIO15
RX2
SPI-CS
8
GPIO0
PWM0
9
GPIO17
PWM5
10
GPIO18
PWM6
11
GPIO19
PWM7
SPI-MOSI
12
GPIO20
PWM0
SPI-MISO
13
VDD
14
GND
15
GPIO1
PWM1
16
GPIO4
PWM4
17
GPIO3
TX1
PWM2
I2C-SDA
18
GPIO2
RX1
PWM3
I2C-SCL

- 9 -
Table 13 BL3383-P pin definitions
Note:
1. In default, UART2 (pin4 and pin5) are used for bypass communication and UART2 (pin6 and
pin7) are used for output of debugging information and burning firmware. Please refer to the
description in DC Characteristics for UART output current level.
2. RST is the reset pin and will be effective with VIL. Configuration information will be remained
after module reset. The module has pull-up process for RST designed internally.
3. The pins for reset button and LED indication should be defined according to actual firmware
and circuit
4. GPIO0 and GPIO1 are hardware function pins and DO NOT pull up these two pins before
power-up.
5. Pulling up both GPIO0 and GPIO3 will switch the module to firmware programming mode.
4.3 Recommendations
The following precautions should be considered during PCB designing:
Do not place any electrical components or grounding in antenna area on main board and it’s
better to leave this area blank on PCB.
It is recommended to not place any electrical components within 10mm range of module
antenna and not design any circuit or bond copper on main board under this area.
Do not use the module inside any metal case or containers with metal painting.
Keep the antenna of Wi-Fi module next to the edge of main board (as shown in Fig 5) during
design of PCB to ensure better performance of antenna.

- 10 -
Fig 2 BL3383-P Recommended PCB layout
4.4. Mechanical Dimensions
Please refer to Fig 3 for the dimensions of module.
Fig 3 BL3383-P Module Dimensions
Note: Dimensions (17.7±0.2) mm * (30±0.2) mm * (3.2)mm (with shielding case)

- 11 -
4.5. Recommended Pad Size
Please refer to Fig 4 for the recommended pad size
Fig 4 BL3383-P Recommended pad size
4.6. Certifications
1. Compliant and certified with SRRC standard (CMIIT ID: 2020DP13621).
2. Compliant with requirement of RoHS 2.0.
3. Compliant with requirement of REACH.

- 12 -
4.7. Label
Fig 5 BL3383-P label content
Please refer to Fig 8 for the content description on label.
Model: ******* : Module model
SN: 00ACA3FE75D7: Module unique MAC address
4.7. Mechanical Dimensions
Please refer to Fig 6 for the dimensions of shielding case.
Fool-proof hole

- 13 -
Fig 6 BL3383-P Dimensions of shielding case
(Unit: mm)
4.8. Packaging
Please refer to Fig 7 and Fig 8 for the details of packaging.
Fig 7 Packaging

- 14 -
Fig 8 Carton
BL3383-P is packed in reel with 850 pcs/reel.
5. Reference Design
5.1. UART Interface Design
For devices with 3.3V power supply, you can directly connect the device UART port with module
UART port according to the illustration in Fig 12.

- 15 -
Fig 9 Circuit diagram (3.3V)
If your device is powered by 5V, you can refer to the circuit shown in Fig 10 or design your own
circuit for power conversion. The value of resistor can be adjusted according to actual circuit
design.
Fig 10 Circuit diagram (5V)
External
MCU
Wi-Fi
module
Capacitor
Groundin
g

- 16 -
5.2. Power Supply Requirement
If an LDO is used to supply the module with 3.3V power, C1 capacitor can be considered to be
used with 10uF-22uF; If a DCDC is used to supply 3.3V power, C1 capacitor can be considered to
be used with 22uF.
It is recommended to supply the module with power higher than 450mA to ensure enough
power supply to the module and avoid power down during data.
The module is designed with 2x 3.3V pins. You can power the module with either pin or both
pins.
FCC Warning
This device complies with Part 15 of the FCC Rules. 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.
NOTE 1: Any changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. End users must follow the specific operating instructions for satisfying RF exposure
compliance.
This module certified that complies with RF exposure requirement under mobile or fixed
condition, this module is to be installed only in mobile or fixed applications.
A mobile device is defined as a transmitting device designed to be used in other than fixed
locations and to generally be used in such a way that a separation distance of at least 20
centimeters is normally maintained between the transmitter's radiating structure(s) and the body
of the user or nearby persons. Transmitting devices designed to be used by consumers or workers

- 17 -
that can be easily re-located, such as wireless devices associated with a personal computer, are
considered to be mobile devices if they meet the 20 centimeter separation requirement.
A fixed device is defined as a device is physically secured at one location and is not able to be
easily moved to another location.
Note 2: Any modifications made to the module will void the Grant of Certification, this module is
limited to OEM installation only and must not be sold to end-users, end-user has no manual
instructions to remove or install the device, only software or operating procedure shall be placed
in the end-user operating manual of final products.
Note 3: Additional testing and certification may be necessary when multiple modules are used.
Note 4: The module may be operated only with the antenna with which it is authorized. Any
antenna that is of the same type and of equal or less directional gain as an antenna that is
authorized with the intentional radiator may be marketed with, and used with, that intentional
radiator.
Note 5: To ensure compliance with all non-transmitter functions the host manufacturer is
responsible for ensuring compliance with the module(s) installed and fully operational. For
example, if a host was previously authorized as an unintentional radiator under the Supplier’s
Declaration of Conformity procedure without a transmitter certified module and a module is
added, the host manufacturer is responsible for ensuring that the after the module is installed
and operational the host continues to be compliant with the Part 15B unintentional radiator
requirements. Since this may depend on the details of how the module is integrated with the
host, Hangzhou BroadLink Technology Co., Ltd. shall provide guidance to the host manufacturer
for compliance with the Part 15B requirements.
Note 6: FCC ID label on the final system must be labeled with “Contains FCC ID: 2ATEV-BL3383-P”
or “Contains transmitter module FCC ID: 2ATEV-BL3383-P”.
Note 7: For all products market in US, OEM has to limit the operation channels in CH1 to CH11 for
2.4G band by supplied firmware programming tool. OEM shall not supply any tool or info to the
end-user regarding to Regulatory Domain change.

- 18 -
IC WARNING
This device contains licence-exempt transmitter(s) that comply with Innovation, Science and
Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two
conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR
d’Innovation, Sciences et Développement économique 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;
2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement.
IC Radiation Exposure Statement:
This device and its antenna(s) must not be co-located with any other transmitters except in
accordance with IC multi-transmitter product procedures. Referring to the multi-transmitter
policy, multiple-transmitter(s) and module(s) can be operated simultaneously without
reassessment permissive change.
Cet appareil et son antenne (s) ne doit pas être co-localisés ou fonctionnement en association
avec une autre antenne ou transmetteur.
This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance 20cm
between the radiator & your body.
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
20cm de distance entre la source de rayonnement et votre corps.

- 19 -
This module is limited to OEM installation only and must not be sold to end-users, end-user
has no manual instructions to remove or install the device, only software or operating procedure
shall be placed in the end-user operating manual of final products. Additional testing and
certification may be necessary when multiple modules are used.
Any changes or modifications not expressly approved by the manufacturer could void the
user's authority to operate this equipment.
The final end product must be labeled in a visible area with the following " Contains IC:
25062-BL3383P ".

- 20 -
Revision History
Date
Version
Updated Content
April 28, 2021
1.0
Preliminary version
May 06, 2021
1.1
Updated SRAM
Copyrights
It is prohibited to use or copy all or any part of contents in this manual without
prior permission, especially applicable for trademarks, models, part numbers and
figures.
Contact Us
Ms Zhou
Hangzhou BroadLink Technology Co., Ltd.
Add: Building C, 57 Jiang’er Road, Binjiang District, Hangzhou, P.R.China
Postcode: 310052
Tel: [phone]- 8010
Email: [e-mail]