Hangzhou Tuya Information Technology WR1 Wi-Fi Module User Manual WR1 x
Hangzhou Tuya Information Technology Co.,Ltd Wi-Fi Module WR1 x
User Manual
WR1 DATASHEET Tuya SmartWi-Fi Module 1. Product Overview WR1 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 12E75M2 and some extra flash that has been programed with Wi-Fi network protocol and plenty of software examples.WR1 include a ARM CM4F, WLAN MAC, 1T1R WLAN, maximum frequency reaches 125MHz, 256K SRAM, 1M byte flash and various peripheral resources. WR1 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. Figure 1 shows the block diagram of the WR1. Figure 1. The block diagram of the WR1 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: 3V to 3.6V Peripherals: 6 GPIO channels, 2 UART, 1 ADC Wi-Fi connectivity: 802.11 B/G/N20/N40 Channel 1 to 11 @ 2.4GHz Support WPA/WPA2 +21.10dBm output power in 802.11b mode WR1 DATASHEET Support SmartConfig function for both Android and IOS devices On-board PCB antenna Operating temperature range: -20℃ to 105℃ 1.2 Main Application Fields Intelligent Building Intelligent home, Intelligent household applications Healthy devices Industrial wireless control Baby monitor Webcam Intelligent bus WR1 DATASHEET 2. Dimensions and Footprint 2.1Dimensions WR1 has 2 columns of Pins (2*9).The distance between each Pin is 1.5 mm. Size of WR1: 18mm(W)*23.5mm(L)*3.1mm(H) Figure 2 shows the dimensions of WR1. Figure 2. The dimensions of WR1 2.2 Pin Definition Table 1 shows the generalpin attributes of WR1 Table 1. The typical pin definition of WR1 PIN NO. NAME TYP DISCREPTION VCC Supply voltage (3.3V) UART0_TX I/O UART0_TXD UART0_RX I/O UART0_RXD VD33 Supply voltage (3.3V) GND Ground GPIOA_14 I/O GPIOA_14 GPIOA_15 I/O GPIOA_15 WR1 DATASHEET LOG_TXD I/O UART_Log_TXD(used to print module's internal information) GPIOA_0 I/O GPIOA_0, can not be pull‐up while booting, can be used as GPIO while in normal working mode 10 GPIOA_5 I/O GPIOA_5 11 LOG_RXD I/O UART_Log_RXD (used to print module's internal information) 12 GPIOA_19 I/O GPIOA_19 13 GPIOA_22 I/O GPIOA_22 14 GND Ground 15 GND Ground 16 CHIP_EN I/O External reset singal(low level effects) 17 ADC AI ADC terminal(input 5V maximally) 18 GND Ground Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input. WR1 DATASHEET 3. Electrical Characteristics 3.1 Absolute Maximum Ratings Table 3.1. Absolute Maximum Ratings PARAMETERS DESCRIPTION MIN MAX UNIT Ts Storage temperature ‐20 105 ℃ VCC Supply voltage ‐0.3 3.6 Static electricity voltage (human model) TAMB‐25℃ ‐ 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 ‐ 105 ℃ VCC Working voltage ‐ 3.6 VIL IO low level input ‐0.3 ‐ VCC*0.25 VIH IO high level input VCC*0.75 ‐ VCC VOL IO low level output ‐ ‐ VCC*0.1 VoH IO high level output VCC*0.8 ‐ VCC Imax IO drive current ‐ ‐ 16 mA Cpad Input capacitor ‐ ‐ 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 +21.10dBm 287 mA IRF 11g 6Mbps +19.97dBm 255 mA IRF IRF 11n-HT20 MCS0 MCS0 +20.09dBm +20.19dBm 244 220 mA mA 11n-HT40 WR1 DATASHEET 3.4 Wi-Fi Receiving Current Consumptions Table 3.4. Wi-Fi RX currentconsumption PARAMETERS MODE TYPICAL UNIT IRF CPU sleep 90 mA IRF CPU active 120 mA 3.5 Working Mode Current Consumptions Table 3.5. The module working currentcon sumption WORK MODE AT TA=25℃ TYPICAL MAX* UNIT EZ Mode WR1 is under EZ paring mode, Wi‐Fi indicator light flashes quickly 121.8 141 mA Standby Mode WR1 is connected, Wi‐Fi indicator light is on 52 125 mA Operation Mode WR1 is connected, Wi‐Fi indicator light is on 180 312 mA Disconnection Mode WR1 is disconnected, Wi‐Fi indicator light is off 46 120 mA Note: peak continuous time is about 5us. The parameter shown above will vary dependingon different firmware functions. 4. WLAN Radio Specification 4.1 Basic Radio Frequency Characteristics Table 41.Basic Radio frequency characteristics PARAMETERS DESCRIPTION Frequency band 2412MHz-2462MHz Wi‐Fi standard IEEE 802.11n20/n40/g/b (Terminal 1‐11) 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 Transmitting Power Table 4.2. Wi-Fi transmitting power WR1 DATASHEET PARAMETERS MIN TYPICAL MAX UNI RF average output power, 802.11b CCK Mode 1M ‐ 21.10 ‐ dBm RF average output power, 802.11g OFDM Mode 6M ‐ 19.97 ‐ dBm RF average output power, 802.11n20 OFDM Mode MCS0 ‐ 20.09 ‐ dBm RF average output power, 802.11n40 OFDM Mode MCS0 ‐ 20.19 ‐ dBm ‐10 ‐ 10 ppm The Frequency error 4.3Wi-Fi Receiving Sensitivity Table 4.3. Wi-Fi Receiving sensitivity PARAMETERS MIN TYPICAL MAX UNI PER<8%, Receiving sensitivity, 802.11b CCK Mode 1M ‐ ‐91 ‐ dBm PER<10%, Receiving sensitivity, 802.11g OFDM Mode 6M ‐ ‐75 ‐ dBm PER<10%, Receiving sensitivity, 802.11n OFDM Mode MCS0 ‐ ‐72 ‐ dBm WR1 DATASHEET 5. Antenna Information 5.1 Antenna Type Antenna can be connectedusing On-board PCB antenna Figure 5.1. Resistor definition for on-board PCB antenna Figure 5.2. Resistor definition for external antenna 5.2 Antenna Interference While using the On-board PCBantenna, 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. WR1 DATASHEET 6. Packaging Information And Production Guide 6.1 Mechanical Dimensions Figure 6.1. Top view of the module 6.2PCB Recommended Package WR1 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 withtemperature< 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 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 DrawingRecommended furnace temperature curve WR1 DATASHEET Figure A.1. The application schematic design of the module 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-WR1”,or “Contains FCC ID:2ANDL-WR1”, Any similar wording that expresses the same meaning may be used.
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