Hangzhou Tuya Information Technology WR2 Wi-Fi Module User Manual

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

User Manual

WR2DATASHEETTuyaSmart Wi-Fi Module 1. Product OverviewWR2 is a low power consumption module with built-in Wi-Fi connectivity solution designed by Hangzhou 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 programmed with Wi-Fi network protocol and plenty of software examples.WR2 include a ARM CM4F, WLAN MAC, 1T1R WLAN, maximum frequency reaches 125MHz, 256K SRAM, 1M byte flash and various peripheral resources. WR2 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 range: 3.3V DCPeripherals: 5 GPIO channels, 1 UART, 1 ADCWi-Fi connectivity:802.11 B/G/N20/N40Channel 1 to 11@ 2.4GHzSupport WPA/WPA2+20.11dBm output power in 802.11b modeSupport SmartConfig function for both Android and IOS devices
WR2DATASHEETOn-board PCB antennaOperating temperature range: -20℃ to 85℃1.2 Main Application Fields Intelligent BuildingIntelligent home, Intelligent household applicationsHealthy devicesIndustrial wireless controlBaby monitorWebcamIntelligent bus
WR2DATASHEET2. Dimensions and Footprint2.1Dimensions WR2 has 2 columns of Pins. The distance between each Pin is 2 mm. Size of WR2: 15mm(W)*18mm(L)*3.3mm(H) Figure 2 shows the dimensions of WR2. Figure 2. The dimensions of WR2 2.2 Pin Definition Table 1 shows the general pin attributes of WR2 Table 2.1 The typical pin definition of WR2 PINNO.NAMETYPEDISCREPTION1VD33PSupplyvoltage(3.3V)2GPIOA_12 I/O GPIOA_12 3GNDPGround4GPIOA_0I/OGPIOA_0,cannotbepull‐upwhilebooting,canbeusedasGPIOwhileinnormalworkingmode5 GPIOA_18 I/O UART0_RXD6GPIOA_5 I/O GPIOA_5 7GPIOA_23 I/O UART0_TXD 8ADCAIADCterminal(input5Vmaximally)9GPIOA_14 I/O GPIOA_14 10CHIP_ENI/OExternalresetsignal(lowleveleffects)
WR2DATASHEET11GPIOA_15 I/O GPIOA_15 Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input.
WR2DATASHEET3. Electrical Characteristics3.1 Absolute Maximum Ratings Table 3.1 Absolute Maximum Ratings PARAMETERSDESCRIPTIONMINMAXUNITTsStoragetemperature‐40105℃VDD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 PARAMETERS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 +20.11dBm287mAIRF11g6Mbps +20.81dBm255mAIRF11nHT20 MCS0+20.29dBm244mAIRF11nHT40 MCS0+19.09dBm220mA
WR2DATASHEET3.4 Wi-Fi Receiving Current Consumptions Table 3.4. Wi-Fi RX current consumption PARAMETERSMODETYPICALUNITIRFCPUsleep90mAIRFCPUactive120mA3.5 Working Mode CurrentConsumptions Table 3.5 The module working current consumption WORKMODEATTA =25℃TYPICALMAX*UNITEZModeWR2isunderEZparingmode,Wi‐Fiindicatorlightflashesquickly115 130 mAStandbyModeWR2isconnected,Wi‐Fiindicatorlightison50 110 mAOperationModeWR2isconnected,Wi‐Fiindicatorlightison120 265 mADisconnectionModeWR2isdisconnected,Wi‐Fiindicatorlightisoff 35 90 mANote: peak continuous time is about 5us. The parameter shown above will vary depending on different firmware functions.
WR2DATASHEET4. WLAN Radio Specification4.1 Basic Radio Frequency Characteristics Table 41.Basic Radio frequency characteristics PARAMETERSDESCRIPTIONFrequencyband2.412GHz to 2.462GHzWi‐FistandardIEEE 802.11n20/g/b (Terminal 1-11),802.11n40( Terminal 1-7)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On‐boardPCBAntenna4.2Wi-Fi Receiving Sensitivity Table 4.2. Wi-Fi Receiving sensitivity PARAMETERSMIN TYPICALMAXUNITPER<8%,Receivingsensitivity,802.11bCCKMode11M ‐ ‐91‐dBmPER<10%,Receivingsensitivity,802.11gOFDMMode 54M ‐ ‐75‐dBmPER<10%,Receivingsensitivity,802.11nOFDMMode MCS7 ‐ ‐72‐dBm
WR2DATASHEET5. Antenna Information5.1 Antenna Type Antenna can be connected using On-board PCB antenna by default. 5.2 Reduce Antenna Interference While using the On-board PCB antenna, in order to have the best Wi-Fi performance, it’s recommended to keep a minimum15mm distance between the antenna part and the other metal pieces. User’s own PCBA design is recommended NOT to pass any wire, NOT do copper pour under the region of the module’s antenna, to avoid interferences. 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
WR2DATASHEET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 with temperature< 30℃ andhumidity< 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 6.4. PCB Package Drawing Recommended furnace temperature curve
WR2DATASHEETHereby,HangzhouTuyaInformationTechnologyCo.,Ltd,declaresthatthisWi‐FiModuleisIncompliancewiththeessentialrequirementsandotherrelevantprovisionsofDirective2014/53/EU.Thisequipmentshouldbeinstalledandoperatedwithaminimumdistanceof20cmbetweentheradiatorandyourbody.EnvironmentfriendlydisposalYoucanhelpprotecttheenvironment!Pleaseremembertorespectthelocalregulations:handinthenon‐workingelectricalequipmentstoanappropriatewastedisposalcentre.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-WR2”,or “Contains FCC ID:2ANDL-WR2”, Any similar wording that expresses the same meaning may be used.

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