Hangzhou Tuya Information Technology WR4 Wi-Fi Module User Manual WR4

Hangzhou Tuya Information Technology Co.,Ltd Wi-Fi Module WR4

User Manual

WR4DATASHEETTuya Smart Wi-Fi Module 1. Product OverviewWR4 is a low power consumption module with built-in connectivity solution designed byHangzhou Tuya Information Technology Co., Ltd.The Wi-Fi Module consists of a highly integrated wireless radio chip W302 12E77H2 and some extra flash that has been programed with Wi-Fi network protocol and plenty of software examples.WR4 includea ARM CM4F,WLAN MAC,1T1R WLAN,maximum frequency reaches 125MHz,256K SRAM,2M byte flash and various peripheral resources.WR4 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. 1.1 Features Integrated low power consumption 32-bit CPU, also known as application processorBasic frequency of the CPU can support 125 MHzSupply voltage : 3.3VPeripherals: 7 GPIO channels, 2 UART, 1 ADCWi-Fi connectivity:802.11 B/G/N20/N40Channel 1 to 11 @ 2.4GHzSupport WPA/WPA2+24.5 dBm output powerSupport SmartConfig function for both Android and IOS devices
WR4DATASHEETExternal IPEX connecter antennaOperating temperature range: -20℃ to 85℃1.2 Main ApplicationFields Intelligent BuildingIntelligent home, Intelligent household applicationsHealthy devicesIndustrial wireless controlBaby monitorWebcamIntelligent bus
WR4DATASHEET2. Dimensions and Footprint2.1Dimensions WR4 has 2 columns of Pins (2*8).The distance between each Pin is 1.5 mm. Size of WR4: 13.8mm(W)*15.5mm(L)*3.3mm(H) Figure 2 shows the dimensions of WR4. Figure 2. The dimensions of WR4 2.2 Pin Definition Table 1 shows the generalpin attributes of WR4 Table 1. The typical pin definitionof WR4 PINNO.NAMETYPEDISCREPTION1NC/ NC，No Connect 2ADCAIADCterminal(input5Vmaximally)3ENI/OExternalresetsingal(lowleveleffects)4A_19 I/O GPIOA_19 5A_12 I/O GPIOA_12 6A_0 I/O GPIOA_0,cannotbepull‐upwhilebooting,canbeusedasGPIOwhileinnormalworkingmode7A_5 I/OGPIOA_1583.3V I/OSupplyvoltage(3.3V)9GND I/OGround10A_23 I/OUART0_TXD
WR4DATASHEET11A_18 I/OUART0_RXD12A_22 I/OGPIOA_2213A_15 I/OGPIOA_1514A_14 I/OGPIOA_1415A_29 I/OUART_Log_RXD(usedtoprintmodule'sinternalinformation)16A_30 I/OUART_Log_TXD(usedtoprintmodule'sinternalinformation)Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input.
WR4DATASHEET3. Electrical Characteristics3.1 Absolute Maximum Ratings Table 3.1. Absolute Maximum Ratings PAR AM ETERSDESCRIPTIONMINMAXUNITTsStoragetemperature‐40105℃VCCSupplyvoltage ‐0.33.6VStaticelectricityvoltage(humanmodel)TAMB‐25℃‐ 2KVStaticelectricityvoltage(machinemodel)TAMB‐25℃‐ 0.5KV3.2 Electrical Conditions Table 3.2. Electrical Conditions PAR AM ETERSDESCRIPTIONMINTYPICAL MAXUNITTaWorkingtemperature ‐20 ‐85℃VCCWorkingvoltage3‐3.6VVILIOlowlevelinput ‐0.3‐ VCC*0.25VVIHIOhighlevelinputVCC*0.75 ‐ VCCVVOLIOlowleveloutput ‐‐VCC*0.1VVoHIOhighleveloutputVCC*0.8‐ VCCVImaxIOdrivecurrent ‐‐16mACpadInputcapacitor ‐2‐pF3.3 Wi-Fi Transmitting Current Consumptions Table 3.3. Wi-Fi TX current consumption PARAMETERSMODERATETransmittingpowerTYPICALUNITIRF11b1Mbps +20.18dBm287mAIRF11g6Mbps+24.17dBm255mAIRF11 n-HT20 MCS0 +23.30dBm244mAIRF 11n-HT40MCS0+22.97dBm220mA
WR4DATASHEET3.4 Wi-Fi Receiving CurrentConsumptions Table 3.4. Wi-Fi RX currentconsumption PAR AM ETERSMODETYPICALUNITIRFCPUsleep90mAIRFCPUactive120mA3.5 Working Mode CurrentConsumptions Table 3.5. The module working currentconsumption WORKMODEATTA=2 5℃TYPICALMAX*UNITEZModeWR4isunderEZparingmode,Wi‐Fiindicatorlightflashesquickly115 130 mAStandbyModeWR4isconnected,Wi‐Fiindicatorlightison50 110 mAOperationModeWR4isconnected,Wi‐Fiindicatorlightison120 265 mADisconnectionModeWR4isdisconnected,Wi‐Fiindicatorlightisoff 35 90 mANote: peak continuous time is about 5us. The parameter shown above will vary dependingon different firmware functions. 4. WLAN Radio Specification4.1 Basic Radio Frequency Characteristics Table 41.Basic Radio frequency characteristics PAR AM ETERSDESCRIPTIONFrequencyband2.412GHzto2.462GHzWi‐FistandardDatatransmittingrate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AntennatypeU.FLRFexternalconnectorIEEE802.11n20/n40/g/b(Terminal1‐11)
WR4DATASHEETPAR AM ETERSMIN TYPICALMAXUNITRFpeakoutputpower,802.11bCCKMode11M‐ 17.5‐dBmRFpeakoutputpower,802.11gOFDMMode54M‐ 14.5‐dBmRFpeakoutputpower,802.11nOFDMModeMCS7‐ 13.5‐dBmTheFrequencyerror ‐10‐ 10ppm4.3Wi-Fi Receiving Sensitivity Table 4.3. Wi-Fi Receiving sensitivity 4.2Wi-Fi TransmittingPower Table 4.2. Wi-Fi transmitting power PAR AM ETERSMIN TYPICALMAXUNITRFpeak outputpower,802.11bCCKMode1M ‐20.18‐dBmRFpeakoutputpower,802.11gOFDMMode6M ‐21.41‐dBmRFpeakoutputpower,802.11n20OFDMMode MCS0‐ 22.30‐dBmRFpeakoutputpower,802.11n40OFDMMode MCS0‐ 21.45‐dBmTheFrequencyerror 10‐‐ 10ppm
WR4DATASHEET5. Antenna Information5.1 Antenna Type External antenna and the FPC antenna is recommended. Figure 5.1. recommended antenna size 5.2 U.FL RF connector The parameter for U.FL RF connector is shown below:
WR4DATASHEET6. Packaging Information And Production Guide6.1 Mechanical Dimensions Figure 6.1. Top view of the module 6.2PCBRecommended Package Figure 6.2 PCB schematic Drawing 6.3 Production Guide The storage for the delivered module should meet the following condition:1. The anti-moisture bag should be kept in the environment withtemperature< 30℃ and
WR4DATASHEET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 ringin the whole process of production.2. While operating, water and dirt should not have any contact with the modules.6.4 Recommended furnace temperature curve Figure 6.3. PCB Package DrawingRecommended furnace temperature curve FCC Statement Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s 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-WR4”,or “Contains FCC ID: 2ANDL-WR4”, Any similar wording that expresses the same meaning may be used.

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