coillill CW1314-BEL-WiFi CPE Module Instruction Manual

coillill CW1314-BEL-WiFi CPE Module

Product Information

Specifications

• Product Name: CW1314_BEL_WiFi Module
• Version: V1.0
• Date: 2023.12.07

Product Usage Instructions

• The CW1314_BEL_WiFi Module is an all-in-one technical development service that provides wireless connectivity.
• Refer to the product manual for detailed drawings and dimensions of the module.
• Ensure all components listed in the product package are present before proceeding with installation.
• Consult the pin definition section in the manual to understand the function of each pin on the module.
• Follow the guidelines provided in the manual to set up the minimal system required for the module to function properly.

FAQ

• Q: What should I do if the device causes interference?
• If the device causes interference, try one or more of the following measures:
• Q: Is there a warranty for this product?
• The document is provided AS IS, without warranty of any kind. Please refer to the manual for more information on warranty and liability.

Disclaimer and Notice
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.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, according 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 under the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
Suppose this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on. In that case, 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 the receiver.
• Connect the equipment to 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.

The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
The document is provided “AS IS”, without warranty of any kind, including the implied warranties of merchantability, and applies to any guarantee for a particular purpose, or non-infringement, and any proposal, specification or sample of any guarantee mentioned anywhere else.
This document does not bear any responsibility, including the use of the document information from infringement of any patent infringement liability.
This document is not here by estoppel or otherwise, any intellectual property rights is granted the license, whether express or implied license.
The information in this document might be modified for upgrade or other reasons. COWIN Corporation reserves the right to make changes without notice. This document is used for design guide only, COWIN corporation try its best to supply the correct information, but it does not assure there is not any error in this document. All the ostensive or implied states, information, and suggestions are not guaranteed.

Version History

Product Overview

The CW1314_BEL_WiFi module is a complete BLE5.2+ WiFi network solution that can operate independently or as a slave to other host MCUs. The module can be booted directly from the built-in Flash when equipped with external applications and acting as the only application processor in the device; it also contains a low-power ARM- CM4 MCU, 1T1R WLAN, up to 160MHz, built-in 288K SRAM, 2Mbyte flash and rich peripheral resources.
The CW1314_BEL_WiFi module supports the IEEE 802.11 b/g/n protocol standard, BLE5.2, supports lightweight TCP/IP protocol stacks, and supports STA, AP, and AP+STA modes. Users can use the module to add networking capabilities to existing devices or build stand-alone network controllers.
Provide customers with complete hardware and software reference programs to shorten your product development cycle and save costs for you.

Product Features

• Supports the 802.11 b/g/n/BLE5.2 standard protocol
• Built-in lightweight TCP/IP protocol stack
• Built-in TR switch, Balun, LNA, PA, and integrated on-board antenna (compatible with external antennas)
• MCU up to 160M clock frequency +288KB SRAM
• Built-in 2Mbit Flash
• Support remote firmware OTA upgrade, can be initiated through the mobile APP, AT command to start the upgrade
• Support STA, AP, AP + STA working mode
• Support WEP/TKIP/WPA/WPA2 security protocol
• Supports 802.11e and the WMM/WMM PS protocol
• Support Smart Link’s intelligent networking function
• Supports HT20
• Supports 6-way hardware PWM
• Supports 6-way ADC
• Maximum +16dBm output power in Wi-Fi 802.11b mode
• Bluetooth maximum output power +6dBm
• The voltage range is 2.4V to 3.6V DC, and it is recommended to operate from a single 3.3V 500mA supply
• On-board antenna, compatible with external antennas
• Size：24m16m2.8mm

Application products

• Smart home appliances
• Smart sockets、lamp
• Health products
• WIFI to serial port products

Product module interface
Product outline drawing
The physical size of the CW1314_BEL_WiFi module is 24mm16mm2.8mm, and the module has a built-in 2.4dBi PCB on-board antenna.

2.2Product package dimension drawing

Package dimension

Module model

| ****

Module model

| ****

Module model

| ****

Module model

| ****

Module model

| ****

Module model

| ****

Module model

---|---|---|---|---|---|---
CW1314_BEL

_WiFi

| CW1314_BEL

_WiFi

| CW1314_BEL

_WiFi

| CW1314_BEL

_WiFi

| CW1314_BEL

_WiFi

| CW1314_BEL

_WiFi

| CW1314_BEL

_WiFi

Pin definition

• The CW1314_BEL_WiFi module connects a total of 22 interfaces, of which GPIO has 16.

Table 2.3 Pin function definitions

5

| UART1_RX| General IO,UART1_RXD（Communicate with MCU)

, ADC6

6| ADC3| General IO, ADC3
7| PWM5| General IO, PWM5,ADC1,IIC_SDA
8| VBAT| Module total power input ， Voltage2.7V~3.6V，

Recommend3.3V 500mA

9| GND| –
10| GPIO21| General IO
11| GPIO22| General IO
12| GPIO23| General IO
13| PWM1| General IO, PWM1
14| PWM2| General IO, PWM2
15| PWM3| General IO, PWM3
16| GND| –
17| PWM4| General IO,PWM4,ADC2,IIC_SCL
18| UART1_TX| General IO, UART_TX, DL_TX
19| SCK| General IO, SPI_SCK
20| PWM0| General IO, PWM0
21| SPI| General IO, SPI_MOSI
22| UART2_RX| General IO, UART2_RX
23| UART2_TX| General IO, UART2_TX

Hardware design

Minimal system

Explain

1. The module does not need additional components, only needs to supply the module to work normally, the supply voltage is recommended 3.3V, the supply current is greater than 500mA;GPIOMaximum drive current is 8mA；
2. 1-pin RST, low active, there is a 10K pull-up resistor inside the module, which requires external MCU IO control；
3. The module’s UART1 is connected to the external MCU’s TXD and the module’s TXD is connected to the RXD of the external MCU；
4. Module online upgrade, just connect the UART2 port and then pull the RST down more than 15ms and then release it, or it can be reset by software；

Serial 5V-3V level translation reference circuit

Antenna clearance area
CW1314_BEL_WiFi needs to be soldered on the PCB board, to obtain the best RF performance, as shown in the following figure, the PCB on-board antenna below, there can be no copper, devices, traces, PCB design needs to be the corresponding area for headroom treatment

RF parameter

Overall parameters
Operating frequency| 2412|  | 2484| MHz
Enter the impedance|  | 50|  | Ω
Transmit power
 | CH1| CH7| CH13|
Output power

（802.11b@11Mbps）

| 17.0| 16.5| 16.4| dBm
Output power

（802.11g@54Mbps）

| 15.0| 15.0| 15.0| dBm
Output power

（802.11n@HT20,MCS7）

| 14| 14| 14| dBm
Receive sensitivity
Sensitivity

（802.11b@11Mbps,CCK）

| -99.0| -99.0| -98.0| dBm
Sensitivity| -76| -76| -76| dBm
（802.11g@54Mbps,OFDM）|  |  |  |
---|---|---|---|---
Sensitivity

（802.11n@HT20,MCS7）

| -74| -74| -74| dBm
Sensitivity（BLE 1M）| -75| -75| -75| dBm

Power consumption
The following power consumption data are measured data under 3.3V supply conditions.

Transmit 802.11n, MCS7, POUT

=+14dBm

|  | 220|  | mA
Receive 802.11b, CCK,1Mbp|  | 75|  | mA
Receive 802.11g, OFDM,54Mbp|  | 82|  | mA
Receive 802.11n,HT20,MCS7|  | 82|  | mA

Furnace temperature curve

• Maximum temperature：<200℃
• Number of times the furnace is passed：≤2

FCC 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.

This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter.
15.105 Information to the user.
(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual:

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, according 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 under the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. Suppose this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on. In that case, 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 the receiver.
• Connect the equipment to 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 equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance 20cm between the radiator and your body. Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

• The availability of some specific channels and/or operational frequency bands are country-dependent and are firmware programmed at the factory to match the intended destination.
• The firmware setting is not accessible by the end user.
• The end product must be labeled in a visible area with the following:
• “Contains Transmitter Module “FCC ID: 2BELC-CW1314”

Requirement per KDB996369 D03

List of applicable FCC rules
List the FCC rules that apply 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 identified AC Power Line Conducted Emission, Radiated Spurious emissions, Band edge and RF Conducted Spurious Emissions, Conducted Peak Output Power, Bandwidth, Power Spectral Density, Antenna Requirement.

Summarize the specific operational use conditions

Describe use conditions that apply to the modular transmitter, including for example any limits on antennas, etc. For example, if point-to-point antennas are used that require a 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 product antenna uses an irreplaceable antenna with a gain of BT:3.85dBi, WIFI:3.18dBi

Single Modular
If a modular transmitter is approved as a “Single Modular,” then the module manufacturer is responsible for approving the host environment that the Single Modular is used with. The manufacturer of a Single Modular must describe, both in the filing and in the installation instructions, the alternative means that the Single Modular manufacturer uses to verify that the host meets the requirements to satisfy the module limiting conditions.
A Single Modular manufacturer has the flexibility to define its alternative method to address the conditions that limit the initial approval, such as: shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation. The alternative method could include the limited module manufacturer reviewing detailed test data or host designs before giving the host manufacturer approval.
This Single Modular 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.

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.

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, 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, requires 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

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: The module complies with FCC radiofrequency radiation exposure limits for uncontrolled environments. The device is installed and operated with a distance of more than 20 cm between the radiator and your body.” This module follows FCC statement design, FCC ID :
2BELC-CW1314

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 “omnidirectional 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 a 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 product antenna uses an irreplaceable antenna with a gain of
BT:3.85dBi, WIFI:3.18dBi

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 indicating the following texts: “Contains FCC ID: 2BELC-CW1314

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 simulate or characterize 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: Dongguan Cowin Intelligent Technology Co., Ltd. can increase the utility of our modular transmitters by providing instructions that simulate or characterize a connection by enabling a transmitter.

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 shoule be evaluated by the FCC Subpart B.

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