FEIT LCM4 Lighting Connectivity Module LCM User Guide
- June 17, 2024
- Feit
Table of Contents
Lighting Connectivity Module (LCM)
Version 4 (LCM4)
Highly integrated 802.11b/g/n Wi-Fi module
Features
- Wi-Fi 1×1 802.11ax/b/g/n, WPA3-R2 Personal and Enterprise (Without Fast BSS Transition) authentication
- Multi-country certified turnkey solution
- Integrated antenna
- IPv4 and IPv6 support
- OTA Firmware Upgrades
- 100% Production Tested
- Low Power Consumption
- Receive sensitivity to -98dBm [802.11b, 1Mbps]
- 105°C temperature rating available
- 3.0 ~ 3.6V Supply Range
- Simple Design-In
- Minimal external components
- Small 13.2×18*0.8mm [2.3mm w/ shield can] 26-pad package
- Standard PCBA process compatible
Description
The LCM4 is a fully integrated 802.11b/g/n embedded module, specifically aimed
at the IoT and Lighting market.
Operating from a 3.0 ~ 3.6V supply range [SoC inside could support 3.0-3.6V],
the LCM allows simple integration into existing products.
Fully qualified firmware and software are provided, enabling simple design-in.
The module is available with a temperature rating of 30~+105°C, enabling a
wide range of lighting applications.
The module is FCC, IC, CE and ROHS certified.
Absolute Maximum Ratings
| Supply voltage (VDD) | 3.0V-3.6V |
|---|---|
| Current consumption (IVDD) | 354mA |
| Input low voltage (V IL) | –0.3V – 0.25xVDD |
| Input high voltage (V IH) | 0.75xV + 0.3V- V |
| Maximum output drive capability (I D) | 40mA |
Operating Temperature Range –30°C to 105°C
Note: All the specifications in this chapter have been tested under the
following general condition: VDD = 3.3V, Ta = 25°C, unless otherwisspecified.
WiFi Radio Characteristics
| Parameter | Operation Mode | Specification | Unit |
|---|---|---|---|
| RF Frequency Range | 802.11b/g/n | 2412-2484 | GHz |
| Conducted Transmit Power(typical) | 802.11b | 21.5 | dBm |
| Receiver Sensitivity(typical) | 802.11b 1Mbps |
11Mbps
802.11g 6Mbps
54Mbps
802.11n MCS0
MCS7| -98
-89
-93
-76
-93
-74| dBm
System Specification
| CPU | Two 32-bit RISC CPUs with max 160 MHz internal clock frequency |
|---|---|
| eFuse | 1 Kbit eFuse |
| Flash Size | 4Mb (In-package) |
| EEPROM | 128 Kbits |
| SRAM | 528 KB |
| ROM | 320 KB for booting and core functions |
Mechanical Specification
Design Guidelines
- The LCM4 driver circuit should be able to handle 100mA average current and up to 700mA surge current for around 2us during data transmission.
- Test points are needed for GND (Pin1), +VDD (Pin2), CHIP_UP (Pin3), GPIO8 (Pin12), GPIO9(PIN13), U_Tx (Pin18) and U_Rx (Pin19), to do debugging and programming.
- Make sure the whole PSU you designed consumes no more than 80mW when no module and load is connected, this is to pass Title20 standby power requirement, which is ≤200mW.
Part Number and Ordering Information
| Ordering Code | Antenna | Flash Size |
|---|---|---|
| LCM4-04D-01A | Trace | 4MB |
History
| Version | Description | Date |
|---|---|---|
| 1.0 | Initial public release version | Jun-23 |
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: The manufacturer is not responsible for any radio or TV interference
caused by unauthorized modifications or changes to this equipment. Such
modifications or changes 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, 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.
The device has been evaluated to meet general RF exposure requirement, The
device can be used in portable exposure condition without restriction. Federal
Communication Commission (FCC) Radiation Exposure Statement Power is so low
that no RF exposure calculation is needed.
Federal Communication Commission (FCC) Radiation Exposure Statement
When using the product, maintain a distance of 20cm from the body to ensure
compliance with RF exposure requirements.
This device is intended only for OEM integrators under the following
conditions: 1. The antenna must be installed such that 20 cm is maintained
between the antenna and users. 2. The transmitter module may not be co-located
with any other transmitter or antenna. As long as the two conditions above are
met, additional transmitter testing will not be required. However, the OEM
integrator is still responsible for testing their end-product for any
additional compliance requirements required for the installed module.
Important Note: In the event that these conditions cannot be met (for example
certain laptop configurations or co-location with another transmitter), then
the Federal Communications Commission of the U.S.
Government (FCC) and the Canadian Government authorizations are no longer
considered valid and the FCC ID cannot be used on the final product. In these
circumstances, the OEM integrator shall be responsible for re-evaluating the
end-product (including the transmitter) and obtaining a separate FCC
authorization in the U.S. and Canada.
OEM Integrators – End Product Labeling Considerations: This transmitter module
is authorized only for use in device where the antenna may be installed such
that 20 cm may be maintained between the antenna and users. The final end
product must be labeled in a visible area with the following: “Contains, FCC
ID:
SYW-LCM4”. The grantee’s FCC ID can be used only when all FCC compliance
requirements are met.
OEM Integrators – End Product Manual Provided to the End User: The OEM
integrator shall not provide information to the end user regarding how to
install or remove this RF module in end product user manual.
The end user manual must include all required regulatory information and
warnings as outlined in this document.
Appropriate measurements (e.g. 15 B compliance) and if applicable additional
equipment authorizations (e.g. SDoC) of the host product to be addressed by
the integrator/manufacturer.
This module is only FCC authorized for the specific rule parts 15.247, 15.407
listed on the grant, and the host product manufacturer is responsible for
compliance to any other FCC rules that apply to the host product as being Part
15 Subpart B compliant.
IC statements:
This device complies with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
- this device may not cause interference, and
- this device must accept any interference, including interference that may cause undesired operation of the device.
This Class B digital apparatus complies with Canadian ICES-003.
Radiation Exposure Statement:
This equipment complies with IC 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.
The LCM4 module has been labelled with its own IC number. If the IC number is
not visible when the module is installed inside another device, the outside of
the finished product into which the module is installed must display a label
referring to the enclosed module. This exterior label can use wording as
follows:
Contains transmitter module IC : 20416-LCM4 or Contains IC : 20416-LCM4
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