AUXLM Wi-Fi Module Users Manual

Tuya Smart Wi-Fi Module 1. Product Overview AUX_LM is a low power consumption module with Serial Communication of 12V Level to 3.3V Level Wi-Fi connectivity solution designed by Hangzhou Tuya Information Technology Co.,Ltd..The Wi-Fi Module consists of a highly integrated wireless radio chip W302I1160P1 and some extra flash that has been programed with Wi-Fi network protocol and plenty of software examples. AUX_LM include a ARM CM4F, WLAN MAC, 1T1R WLAN, maximum frequency reaches 125MHz, 256K SRAM, 2M byte flash and various peripheral resources. AUX_LM is a RTOS platform, embedded with all the Wi-Fi MAC and TCP/IP protocol function examples, users can customize their Wi-Fi product by using these software examples. Features Integrated low power consumption 32-bit CPU, also known as application processor Basic frequency of the CPU can support 125 MHz Peripherals: 7 GPIO channels, 1 UART Wi-Fi connectivity:

802.11 B/G/N20/N40 Channel 1 to 11 @ 2.4GHz Support WPA/WPA2 Support SmartConfig function for both Android and IOS devices On-board PCB antenna Operating temperature range: -20 to 85 Main Application Fields Intelligent Building Intelligent home, Intelligent household applications Healthy devices Industrial wireless control Baby monitor Webcam Intelligent bus 2. Dimensions and Footprint 2.1Dimensions AUX_LM size: 57.3 mm (W)*36.2 mm (L)*7.2 mm (H) package as shown in Figure 2.1:

The tolerance of length and width of PCB is (0.25 mm) and that of thickness is (0.1mm). Figure 2.1. The dimensions of AUX_LM 2.2 Pin Definition Table 1 shows the generalpin attributes of AUX_LM Table 1. The typical pin definitionof AUX_LM NAME TYPE DISCREPTION VDD GND EN RXD TXD Supplyvoltage(12V) Ground P P I/O DC-DCPower Enabling Foot I/O UART0_RXD I/O UART0_TXD PIN NO. 1 2 3 4 5 Note: P: Power supply pins; I/O: Digital input or output pins; AI: Analog input. 3. Electrical Characteristics Absolute Maximum Ratings Table 3.1. Absolute Maximum Ratings DESCRIPTION Storagetemperature Supplyvoltage TAMB25 TAMB25 MIN 40 0.3 MAX 125 18 2 0.5 UNIT V KV KV PARAMETERS Ts VCC Staticelectricityvoltage

(humanmodel) Staticelectricityvoltage

(machinemodel) Electrical Conditions Table 3.2. Electrical Conditions PARAMETERS DESCRIPTION Ta VCC VIL VIH VOL VoH Imax Cpad Workingtemperature Workingvoltage IOlowlevelinput IOhighlevelinput IOlowleveloutput IOhighleveloutput IOdrivecurrent Inputcapacitor MIN 20 4.5 0.3 2.47 2.64 TYPICAL MAX 2 85 18 0.8 3.6 0.34 3.4 16 UNIT V V V V V mA pF Wi-Fi Transmitting Current Consumptions Table 3.3. Wi-Fi TX current consumption PARAMETERS IRF IRF IRF IRF MODE 11b 11g 11 n-HT20 11n-HT40 RATE 1Mbps 6Mbps MCS0 MCS0 Transmittingpower TYPICAL

+23.09dBm

+25.13dBm

+24.26dBm

+23.53dBm 287 255 244 220 UNIT mA mA mA mA Wi-Fi Receiving Current Consumptions Table 3.4. Wi-Fi RX current consumption PARAMETERS IRF IRF MODE CPUsleep CPUactive TYPICAL 90 120 UNIT mA mA Working Mode Current Consumptions WORKMODE ATTA=25 TYPICAL MAX* UNIT Table 3.5. The module working current consumption EZMode StandbyMode AUX_LMisunderEZparingmode,Wi Fiindicatorlightflashesquickly AUX_LM isconnected,WiFiindicatorlightison OperationMode AUX_LMisconnected,WiFiindicatorlightison AUX_LMisdisconnected,WiFiindicatorlight is Disconnection off Mode Note: peak continuous time is about 5us. 115 60 118 34 125 mA 209 mA 198 192 mA mA The parameter shown above will vary depending on different firmware functions. 4. WLAN Radio Specification Basic Radio Frequency Characteristics Table 41.Basic Radio frequency characteristics PARAMETERS Frequencyband WiFistandard Datatransmittingrate Antennatype Wi-Fi Receiving Sensitivity DESCRIPTION 2.412GHzto2.462GHz IEEE802.11n/g/b(Terminal111) 11b:1,2,5.5,11(Mbps) 11g:6,9,12,18,24,36,48,54(Mbps) 11n:HT20,MCS0~7 11n:HT40,MCS0~7 OnboardPCBAntenna Table 4.3. Wi-Fi Receiving sensitivity PARAMETERS 11M PER<8%,Receivingsensitivity,802.11bCCKMode PER<10%,Receivingsensitivity,802.11gOFDMMode 54M PER<10%,Receivingsensitivity,802.11nOFDMMode MCS7 MIN TYPICAL MAX UNI T dBm dBm dBm 91 75 72 5. Antenna Information Antenna Type PCB board antenna Reduce Antenna Interference While using the On-board PCB antenna, in order to have the best Wi-Fi performance, its recommended to keep a minimum15mm distance between the antenna part and the other metal pieces. Fig. 1 shows five common antenna placement modes, of which scheme 1 and scheme 2 have the best performance, and have little influence on the RF performance, which is comparable to the RF performance tested by the module alone. If the design is limited, the PCB antenna must be placed on the bottom board, you can refer to the placement of scheme 3, but there will be some loss of radio frequency performance, almost 1-2 dBm attenuation. The radio frequency performance of scheme 5 is the worst. Because the antenna is placed in the bottom plate, the radio frequency signal can not be transmitted and received well, so it is not recommended to use. Scheme 1: The antenna is outside the frame. Scheme 2: The antenna is placed along the edge of the plate and hollowed underneath. Scheme 3: The antenna is placed along the edge of the plate without copper cladding underneath. Scheme 4: The antenna is placed in the frame and hollowed out below. Scheme 5: The antenna is in the frame and there is no clearance below. 6. Packaging Information And Production Guide Mechanical Dimensions Figure 6.1. Top view of the module Production Guide The storage for the delivered module should meet the following condition:

1. The anti-moisture bag should be kept in the environment with temperature< 30 and humidity< 85% RH. 2. The expiration date is 6 months since the dry packaging products was sealed. Cautions:

1. All the operators should wear electrostatic ring in the whole process of production. 2. While operating, water and dirt should not have any contact with the modules. Recommended furnace temperature curve Figure 6.4. PCB Package Drawing Recommended furnace temperature curve FCC Statement Any Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the 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. FCC Radiation Exposure Statement:

This equipment complies with FCC 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. FCC Label Instructions:

The outside of final products that contains this module device must display a label referring to the enclosed module. This exterior label can use wording such as: Contains Transmitter Module FCC ID: 2ANDL-AUXLM,or Contains FCC ID: 2ANDL-AUXLM, Any similar wording that expresses the same meaning may be used. Regulatory Module Integration Instructions This device complies with part 15.247 of the FCC Rules. The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The antenna is integral PCB Antenna and maximum gain is 2.5dBi . This Wi-Fi module has been granted modular approval for mobile applications. OEM integrators for host products may use the module in their final products without additional FCC certification if they meet the following conditions. Otherwise, additional FCC approvals must be obtained. The host product with the module installed must be evaluated for simultaneous transmission requirements. The users manual for the host product must clearly indicate the operating requirements and conditions that must be observed to ensure compliance with current FCC RF exposure guidelines. To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation, use this module only with the included onboard antenna. The final host / module combination may also need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device.