HANGZHOU LIJIACHENG ELECTRIC M39 Module User Manual
- June 6, 2024
- HANGZHOU LIJIACHENG ELECTRIC
Table of Contents
HANGZHOU LIJIACHENG ELECTRIC M39 Module User Manual
1 Product description
M39 is a low-power embedded Wi-Fi module developed by Huayulian Technology. It consists of a highly integrated radio frequency core It is composed of BK7231T and a small number of peripheral devices, built-in Wi-Fi network protocol stack and rich library functions. M39 built-in low power consumption 32-bit MCU, 2Mbyte flash memory, 256KB SRAM and abundant peripheral resources. M39 is a function library equipped with RTOS platform that integrates all Wi-Fi MAC and TCP/IP protocols. Users can develop embedded Wi-Fi products that meet their needs based on these
1.1 characteristic
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Built-in low-power 32-bit CPU, which can double as an application processor
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basic frequency support : 120MHz
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Operating Voltage3.3±0.3V
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Peripherals5×GPIOs
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Wi-Fi Convexity
– 802.11 b/g/n
– passageway 1-14@2.4GHz
– Support WPA/WPA2 security mode
– Maximum in 8 0 2 . 11 bode +18dBm output power
– Support STA/AP/STA+AP working mode
– Support Smart Config and AP two network configuration methods (including Android and IOS devices)
– PCB onboard antenna, antenna gai 1.2dBi
– Operating temperature：-20℃ to 105℃ -
BLE Connectivity
- Support bluetooth V4.2
– Maximum output p o w e r +4dBm
– PCB onboard antenna, antenna gain 1.2dBi
1.2 Application field
- Smart building
- Smart Home/ Home Appliances
- Smart sockets, smart lights
- Industrial wireless control
- Baby Monitor
- Webcam
- Smart bus
1.3 Version update instructions
2 Module interface
2.1 size-package
M39 has 2 rows of pins The pin spacing is 2.0 ± 0.1mm M39 size 24.0± 0.35mm (W)×16.0±0.35mm (L) ×0.8±0.15mm (H) M39 Dimensions
2.2 Pin definition
3 Electrical parameters
3.1 Absolute electrical parameters
3.2 Normal working conditions
3.3 Power consumption for continuous transmission and reception
3.4 Working current
4 RF parameters
4.1 Basic RF characteristics
4.2 Emission performance
TX Continuous transmission performance
4.3 Receiving performance
RX Sensitivity
5 Antenna information5.
5.1 Antenna type
Use PCB onboard antenna.
5.2 Reduce antenna interference
Try to keep the antenna away from large components.。
6 Packaging information and production
6.1 Mechanical Dimensions
PCB Size：16.0±0.35mm (W)×24.0±0.35mm (L) ×0.8±0.15mm (H)。
6.2 PCB Package drawing – pins
M39 SMD soldering for module selection The size of the patch is shown in the figure below：
6.3 Production guide
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The stamp port package module delivered by Huay Lain must be mounted by SMT machine, and the mounting must be completed within 24 hours after unpacking and burning the firmware Otherwise, vacuum packaging must be re-evacuated, and the module must be baked before placement. A. Equipment or equipment required for SMT placement: a) Reflow soldering placement machine; b) AOI detector; c) 6-8mm nozzle; B. Baking equipment or equipment: a) Cabinet baking Box; b) Anti-static high temperature resistant tray; c) Anti-static high temperature resistant gloves;
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The storage conditions of the modules shipped by Huayu Lian are as follows: A. The moisture-proof bag must be stored in an environment where the temperature is less than 30℃ and the humidity is less than 70%RH.
B. For dry-packaged products, the shelf life is 6 months from the date the package is sealed. C. There is a humidity indicator card in the sealed package: 3The modules shipped by Huayulian need to be baked. The humidity indicator card and the baking conditions are as follows：
A. When unpacking, if the reading value of humidity indicator card is 30%, 40% and 50% and the color ring is blue, the module needs to be continuously baked for 2 hours; B. When unpacking, if the humidity indicator card reads that 30% color ring turns pink, the module needs to be continuously baked for 4 hours; C. When unpacking, if the humidity indicator card reads 30% and 40% of the color ring turns pink, the module needs to be continuously baked for 6 hours; D. When unpacking, if the humidity indicator card reads that 30%, 40% and 50% color rings turn pink, the module needs to be continuously baked for 12 hours Baking parameters are as follows: A. Baking temperature: 125±5℃; B. Alarm temperature setting: 130℃; C. After cooling under natural conditions <36℃ SMT patch can be performed; D. Drying times: 1 time; E. If there is no soldering after baking for more than 12 hours, please bake again； -
If the unpacking time exceeds 3 months, it is forbidden to use SMT process to solder this batch of modules, because this PCB is an immersion gold process After more than 3 months, the pad oxidizes severely, and it is very likely to cause false
soldering and missing soldering during SMT placement. Our company does not bear the corresponding responsibility for the various problems caused by this. -
Before SMT mounting, please carry out ESD (electrostatic discharge, electrostatic discharge) protection to the module;
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In order to ensure the pass rate of reflow soldering, please sample 10% of the products for the first patch for visual inspection and AOI inspection to ensure the reasonableness of the adsorption method and placement method of the furnace temperature control device; subsequent mass production is recommended to sample 5-10 per hour Visual inspection and AOI inspection of the film
6.4 Recommended furnace temperature curve
Please insert the parts directly according to the reflow soldering curve, the peak temperature is 245℃, and the reflow soldering temperature curve is shown in the figure below：
6.5 Storage conditions
7 Module MOQ and packaging information
8 Appendix: Statement
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
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: 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. Radiation
Exposure Statement This equipment complies with FCC radiation exposure limits
set forth for an uncontrolled rolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. Important Note This radio module must not installed to co-locate and operating simultaneously with other radios in host system except in accordance with FCC multi-transmitter product procedures. Additional testing and equipment authorization may be required to operating simultaneously with other radio. The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the in-tended destination. The firmware setting is not accessible by the end user.
The host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. The end user manual shall include all required regulatory information/warning as shown in this manual, including: This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body.
The RF module is considered as a limited modular transmitter according to FCC
rules. Even though the RF module get a FCC ID, the host product manufacturer
can not use the FCC ID on the final product directly. In these circumstances,
the host product manufacturer integrator will be responsible for re-evaluating
the end product (including the transmitter) and obtaining the FCC
authorization by a Class II permissive change application or a new
application.
Declaration of Conformity European notice
Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU.A copy of the Declaration of conformity can be found at https://www.tuya.com
This product must not be disposed of as normal household waste, in accordance with EU directive for waste electrical and electronic equipment (WEEE-2012/19/EU). Instead it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point. The device could be used with a separation distance of 20cm to the human body.
Requirement per KDB996369 D03
2.2 List of applicable FCC rules
List the FCC rules that are applicable to the modular transmitter. These are
the rules that specifically establish the bands of operation, the power,
spurious emissions, and operating fundamental frequencies. DO NOT list
compliance to unintentional-radiator rules (Part 15 Subpart B) since that is
not a condition of a module grant that is extended to a host manufacturer. See
also Section 2.10 below concerning the need to notify host manufacturers that
further testing is required.3 Explanation: This module meets the requirements
of FCC part 15C(15.247).it specifically establish the 6dB Bandwidth, Peak
Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted
Band of Operation and Band Edge (Out of Band Emissions)
2.3 Summarize the specific operational use conditions
Describe use conditions that are applicable to the modular transmitter,
including for example any limits on antennas, etc. For example, if point-to-
point antennas are used that require reduction in power or compensation for
cable loss, then this information must be in the instructions. If the use
condition limitations extend to professional users, then instructions must
state that this information also extends to the host manufacturer’s
instruction manual. In addition, certain information may also be needed, such
as peak gain per frequency band and minimum gain, specifically for master
devices in 5 GHz DFS bands. Explanation: The module has one PCB antenna, The
antenna cannot be removed, Unconventional interface
2.4 Limited module procedures
If a modular transmitter is approved as a “limited module,” then the module
manufacturer is responsible for approving the host environment that the
limited module is used with. The manufacturer of a limited module must
describe, both in the filing and in the installation instructions, the
alternative means that the limited module manufacturer uses to verify that the
host meets the necessary requirements to satisfy the module limiting
conditions. A limited module manufacturer has the flexibility to define its
alternative method to address the conditions that limit the initial approval,
such as: shielding, minimum signalling amplitude, buffered modulation/data
inputs, or power supply regulation. The alternative method could include that
the limited module manufacturer reviews detailed test data or host designs
prior to giving the host manufacturer approval.
This limited module procedure is also applicable for RF exposure evaluation
when it is necessary to demonstrate compliance in a specific host. The module
manufacturer must state how control of the product into which the modular
transmitter will be installed will be maintained such that full compliance of
the product is always ensured. For additional hosts other than the specific
host originally granted with a limited module, a Class II permissive change is
required on the module grant to register the additional host as a specific
host also approved with the module.
Explanation: The module is a single module.
2.5 Trace antenna designs
For a modular transmitter with trace antenna designs, see the guidance in
Question 11 of KDB Publication 996369 D02 FAQ Modules for Micro-Strip
Antennas and traces. The integration information shall include for the TCB
review the integration instructions for the following aspects: layout of trace
design, parts list (BOM), antenna, connectors, and isolation requirements.
a) Information that includes permitted variances (e.g., trace boundary limits,
thickness, length, width, shape(s), dielectric constant, and impedance as
applicable for each type of antenna);
b) Each design shall be considered a different type (e.g., antenna length in
multiple(s) of frequency, the wavelength, and antenna shape (traces in phase)
can affect antenna gain and must be considered);
c) The parameters shall be provided in a manner permitting host manufacturers
to design the printed circuit (PC) board layout;
d) Appropriate parts by manufacturer and specifications;
e) Test procedures for design verification; and
f) Production test procedures for ensuring compliance. The module grantee
shall provide a notice that any deviation(s) from the defined parameters of
the antenna trace, as described by the instructions, require that the host
product manufacturer must notify the module grantee that they wish to change
the antenna trace design. In this case, a Class II permissive change
application is required to be filed by the grantee, or the host manufacturer
can take responsibility through the change in FCC ID (new application)
procedure followed by a Class II permissive change application. Explanation:
Yes, The module with trace antenna designs, and This manual has been shown the
layout of trace design,, antenna, connectors, and isolation requirements.
2.6 RF exposure considerations
It is essential for module grantees to clearly and explicitly state the RF
exposure conditions that permit a host product manufacturer to use the module.
Two types of instructions are required for RF exposure information: (1) to the
host product manufacturer, to define the application conditions (mobile,
portable xx cm from a person’s body); and (2) additional text needed for the
host product manufacturer to provide to end users in their end-product
manuals. If RF exposure statements and use conditions are not provided, then
the host product manufacturer is required to take responsibility of the module
through a change in FCC ID (new application).
Explanation: This module complies with FCC RF radiation exposure limits
set forth for an uncontrolled environment, This equipment should be installed
and operated with a minimum distance of 20 centimetres between the radiator
and your body.” This module is designed
to comply with the FCC statement, FCC ID: 2AWY7GWF-KM26.
2.7 Antennas
A list of antennas included in the application for certification must be
provided in the instructions. For modular transmitters approved as limited
modules, all applicable professional installer instructions must be included
as part of the information to the host product manufacturer. The antenna list
shall also identify the antenna types (monopole, PIFA, dipole, etc. (note that
for example an “omni-directional antenna” is not considered to be a specific
“antenna type”)).
For situations where the host product manufacturer is responsible for an external connector, for example with an RF pin and antenna trace design, the integration instructions shall inform the installer that unique antenna connector must be used on the Part 15 authorized transmitters used in the host product. The module manufacturers shall provide a list of acceptable unique connectors.
Explanation: The EUT has one PCB Antenna, The antenna cannot be removed, Unconventional interface
2.8 Label and compliance information
Grantees are responsible for the continued compliance of their modules to the
FCC rules. This includes advising host product manufacturers that they need to
provide a physical or e-label stating “Contains FCC ID” with their finished
product. See Guidelines for Labeling and User Information for RF Devices KDB
Publication 784748. Explanation: The host system using this module, should
have label in a visible area indicated the following texts: Contains FCC ID:
2AW8C-LJCM39
2.9 Information on test modes and additional testing requirements
Additional guidance for testing host products is given in KDB Publication
996369 D04 Module Integration Guide. Test modes should take into consideration
different operational conditions for a stand-alone modular transmitter in a
host, as well as for multiple simultaneously transmitting modules or other
transmitters in a host product. The grantee should provide information on how
to configure test modes for host product evaluation for different operational
conditions for a stand-alone modular transmitter in a host, versus with
multiple, simultaneously transmitting modules or other transmitters in a host.
Grantees can increase the utility of their modular transmitters by providing
special means, modes, or instructions that simulates or characterizes a
connection by enabling a transmitter. This can greatly simplify a host
manufacturer’s determination that a module as installed in a host complies
with FCC requirements.
Explanation: WiFi Module can increase the utility of our modular
transmitters by providing
instructions that simulates or characterizes a connection by enabling a
transmitter.
2.10 Additional testing, Part 15 Subpart B disclaimer
The grantee should include a statement that the modular transmitter is only
FCC authorized for the specific rule parts (i.e., FCC transmitter rules)
listed on the grant, and that the host product manufacturer is responsible for
compliance to any other FCC rules that apply to the host not covered by the
modular transmitter grant of certification. If the grantee markets their
product as being Part 15 Subpart B compliant (when it also contains
unintentional-radiator digital circuity), then the grantee shall provide a
notice stating that the final host product still requires Part 15 Subpart B
compliance testing with the modular transmitter installed.
Explanation: The module without unintentional-radiator digital circuity, so the module does not require an evaluation by FCC Part 15 Subpart B. The host should be evaluated by the FCC Subpart B.
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