Cdtech CDW-C45502S-01 Wi-Fi Module Owner’s Manual
- September 12, 2024
- Cdtech
Table of Contents
CDW-C45502S-01 Wi-Fi Module
“`html
Specifications
Model: CDW-C45502S-01
Product Name: WiFi Module
Major Chipset: ASR550X
Standard: IEEE 802.11 b/g/n
Operating Temperature: Standard Operating
Temperature
Storage Temperature: Storage Temperature
Product Information
Overview
CDW-C45502S-01 is a highly integrated, high performance and low
cost 1×1 IEEE 802.11 b/g/n System-on-Chip (SoC) for the Internet of
Things (IoT). It integrates RF transceiver, 802.11 PHY+MAC, ARM
Cortex-M4F, advanced peripheral interfaces, Real Time Counter
(RTC), and power management circuits.
Features
-
Support 802.11 b/g/n compatible WLAN
-
Support 802.11e QoS enhancement (WMM)
-
Support 802.11i (WPA/WPA2 PSK), Open/WEP/TKIP/CCMP
-
Integrated Power Amplifier (PA) with internal power detector
and closed loop power calibration -
Support eXecute-in-Place (XiP) on flash and external SPI
flash -
Support OTA
Block Diagram
Physical Dimensions
Pin Description
| PIN Name | Type | Description |
|---|
Physical Photo
Packaging Detail
Vacuum AL BAG ANTI-STATIC
Color of plastic disc: blue
Product Usage Instructions
FAQ
Q: How do I update the firmware on the CDW-C45502S-01 WiFi
Module?
A: To update the firmware, follow these steps: 1. Step 1 2. Step
2 3. Step 3 …
“`
SPECIFCATION
CDW-C45502S-01 WiFi Module Spec
Software
Customer
Approve
Date
Design
Check
Approve
Version
Date
V1.0
2023.12.26
CHINA DRAGON TECHNOLOGY LIMITED
B4 (86 755) 81449957 (86 755) 81449967 E-mail: Info@cdtech.cn
Http://www.cdtech.cn
Reversion History
Version
Date
1.0
2023.12.26
Modification
First release
WiFi Module
CDW-C45502S-01
Page 2
WiFi Module
CDW-C45502S-01
1. Overview
CDW-C45502S-01 is a highly integrated, high performance and low cost 1×1 IEEE
802.11 b/g/n System-on-Chip (SoC) for the Internet of Things (IoT). ASR550X
integrates RF transceiver, 802.11 PHY+MAC, ARM Cortex-M4F, advanced peripheral
interfaces, Real Time Counter (RTC) and power management circuits. The
integrated RF and analog circuit incorporate T/R switch, RF balun, power
amplifier, low-noise amplifier, and entire power management modules.
2. Features
Support 802.11 b/g/n compatible WLAN Support 802.11e QoS enhancement (WMM)
Support 802.11i (WPA/WPA2 PSK), Open/WEP/TKIP/CCMP Integrated Power Amplifier
(PA) with internal power detector and closed loop power
calibration
Support eXecute-in-Place (XiP) on flash and external SPI flash
Support OTA
Page 3
3. Block Diagram
WiFi Module
CDW-C45502S-01
4. General Specification
Model
Product Name
Major Chipset
Standard Operating Temperature Storage Temperature
Dimension
CDW-C45502S-01 WiFi Module ASR5502S 802.11b/g/n -20~ +70°C ambient temperature -40 ~ 80°C ambient temperature 18x15x1.6 (LxWxH) ±0.2mm
Page 4
WiFi Module
CDW-C45502S-01
5. RF Specification
Wifi WLAN Standard Frequency Range Number of Channels
Description IEEE 802.11b/g/n WiFi compliant 2.42.4835 GHz ISM Band 2.4GHzCh1 ~
Ch11
802.11b /11Mbps : 17dBm ± 2 dB @ EVM -15dB
Output Power
802.11g /54Mbps : 15dBm ± 2 dB @ EVM -28dB
802.11n /MCS7: 14dBm ± 2 dB @ EVM -30dB
Receive Sensitivity (11b,11MHz) Receive Sensitivity (11g,54Mbps) Receive Sensitivity (11n,20MHz)
– 11Mbps – 54Mbps – MCS 7
PER @ -89dBm, typical PER @ -76dBm, typical PER @ -73dBm, typical
6. Physical Dimensions
Note: ± 0.1mm.
(Unit: mm)
Top
side face
Bottom
Page 5
7. Pin Description
WiFi Module
CDW-C45502S-01
NO. 1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17
PIN Name
NC IO17 RESET IO16 IO14 IO12 IO13 VCC_3V3 GND IO15
TXD
IO0 IO4 IO5 RXD TXD TEST1
Type
— — I/O — — — — P — — I/O
Description
No connect, keep floating GPIO,(No connect, keep floating) Enable the foot
GPIO,(No connect, keep floating) GPIO,(No connect, keep floating) GPIO,(No
connect, keep floating) GPIO,(No connect, keep floating) 3.3V INPUT Ground
connections GPIO,(No connect, keep floating) (for printing the module internal
information)
— GPIO,(No connect, keep floating) — GPIO,(No connect, keep floating) — GPIO,(No connect, keep floating) I/O UART 1 RXD (User Serial Port) I/O UART 1 TXD (User Serial Port) I/O Boot with UARTNeed to pull up
Page 6
8. Physical photo
WiFi Module
CDW-C45502S-01
Description: PCB different suppliers
Page 7
9. Packaging Detail:
35±2mm
WiFi Module
CDW-C45502S-01
Vacuum
AL BAG ANTI-STATIC
Color of plastic disc: blue A roll of 700pcs(20pcs)
inner box K3K: 33.5cm34.7cm7cm A box of 700 PCS
carton K=A: 36.435.737.5cm A case of 3500 PCS
ESD CAUTION
Page 8
WiFi Module
CDW-C45502S-01
FCC Warning Statement
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.
FCC Radiation Exposure Statement The antennas used for this transmitter must
be installed to provide a separation distance of at least 20 cm from all
persons and must not be co-located for operating in conjunction with any other
antenna or transmitter.
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.
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 final end product must be labelled in a
visible area with the following: Contains Transmitter Module FCC ID: 2BFLD-
CDWC45502S01
Page 9
WiFi Module
CDW-C45502S-01
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).
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 EUT has PCB antenna, The antenna gain is -0.74dBi.
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 signaling 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.
Page 10
WiFi Module
CDW-C45502S-01
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 PCB
antenna designs, and this manual has been shown the layout of 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 centimeters between the
radiator and your body.” This module is designed to comply with the FCC
statement, FCC ID is: 2BFLD-CDWC45502S01.
Page 11
WiFi Module
CDW-C45502S-01
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 PCB antenna,
the antenna gain is -0.74dBi.
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: 2BFLD-CDWC45502S01
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: Can increase the utility of our modular
transmitters by providing instructions that simulates or characterizes a
connection by enabling a transmitter.
Page 12
WiFi Module
CDW-C45502S-01
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
circuit), 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 circuit, so the module does not require an evaluation by FCC Part 15
Subpart B. The host should be evaluated by the FCC Subpart B.
Page 13