Global Intelligent Platform Product Manual Tuya TYWRD2S Wi-Fi Module Version: 2.0.0 Date: 2019-09-04 No.: 0000000001 1. Product Overview TYWRD2S is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a highly integrated RF chip (RDA5981B) and several peripheral components, with an embedded Wi-Fi network protocol stack and robust library functions. TYWRD2S is embedded with a low-power Arm Cortex-M4 MCU, 2 MB flash memory, and 448 KB static random-access memory (SRAM), and has extensive peripherals. TYWRD2S is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and TCP/IP protocols. You can develop embedded Wi-Fi products as required. 1.1 Features Embedded low-power CPU, which can also function as an application processor Dominant frequency: up to 160 MHz Working voltage: 3.0 V to 3.6 V Peripherals: five GPIOs, one universal asynchronous receiver/transmitter (UART), and one analog-to-digital converter (ADC) Wi-Fi connectivity 802.11b/g/n HT20 2.4GHz WiFi WPA, WPA2, WEP, and TKIP security modes Up to +17 dBm output power in 802.11b mode STA, AP, and STA+AP working modes Smart and AP network configuration modes for Android and iOS devices Onboard PCB antenna with antenna gain of 1.0dBi. TYWRD2S Datasheet Working temperature: 20C to +85C 1.2 Applications Intelligent building Smart household and home appliances Smart socket and light Industrial wireless control Baby monitor Network camera Intelligent bus Hangzhou Tuya Information Technology Co., Ltd. 2 V2.0.0 TYWRD2S Datasheet Change History No. Date Change Description Version After Change 1 2019-07-26 This is the first release. 2.0.0 Hangzhou Tuya Information Technology Co., Ltd. 3 V2.0.0 TYWRD2S Datasheet Contents 1. Product Overview ............................................................................................................ 1 1.1 Features.................................................................................................................. 1 1.2 Applications ............................................................................................................ 2 2 Module Interfaces ............................................................................................................. 6 2.1 Dimensions and Footprint ...................................................................................... 6 2.2 Interface Pin Definition ........................................................................................... 6 2.3 Test Pin Definition ................................................................................................... 8 3 Electrical Parameters ........................................................................................................ 8 3.1 Absolute Electrical Parameters .............................................................................. 8 3.2 Electrical Conditions ............................................................................................... 9 3.3 TYWRD2S RX Power Consumption .................................................................... 10 3.4 Working Current ................................................................................................... 10 4 RF Features .................................................................................................................... 10 4.1 Basic RF Features ................................................................................................ 10 4.2 TYWRD2S Output Power ..................................................................................... 11 4.3 TYWRD2S RX Sensitivity ..................................................................................... 11 5 Antenna Information ........................................................................................................ 12 5.1 Antenna Type ........................................................................................................ 12 5.2 Antenna Interference Reduction ........................................................................... 12 5.3 Antenna Connector Specifications ....................................................................... 13 6 Packaging Information and Production Instructions ....................................................... 13 6.1 Mechanical Dimensions ....................................................................................... 13 6.2 Recommended PCB Encapsulation ..................................................................... 14 6.3 Production Instructions ......................................................................................... 14 6.4 Recommended Oven Temperature Curve ........................................................... 16 Hangzhou Tuya Information Technology Co., Ltd. 4 V2.0.0 TYWRD2S Datasheet 6.5 Storage Conditions ............................................................................................... 17 7 MOQ and Packing Information ....................................................................................... 17 8 Appendix: Statement ....................................................................................................... 18 Figures Figure 2-1 TYWRD2S front and rear views ......................................................................... 6 Figure 6-1 TYWRD2S mechanical dimensions ................................................................. 13 Figure 6-2 Side view .......................................................................................................... 13 Figure 6-3 TYWRD2S pins ................................................................................................ 14 Figure 6-4 PCB encapsulation diagram of TYWRD2S ...................................................... 14 Figure 6-5 HIC for TYWRD2S ........................................................................................... 15 Tables Table 2-1 TYWRD2S interface pins ..................................................................................... 6 Table 2-2 TYWRD2S test pins ............................................................................................. 8 Table 3-1 Absolute electrical parameters ............................................................................ 8 Table 3-2 Normal electrical conditions ................................................................................. 9 Table 3-4 Power consumption during constant receiving .................................................. 10 Table 3-5 TYWRD2S working current ................................................................................ 10 Table 4-1 Basic RF features .............................................................................................. 10 Table 4-2 Power during constant transmission ................................................................. 11 Table 4-3 RX sensitivity ..................................................................................................... 11 Hangzhou Tuya Information Technology Co., Ltd. 5 V2.0.0 TYWRD2S Datasheet 2 Module Interfaces 2.1 Dimensions and Footprint TYWRD2S has two rows of pins with a 2 mm pin spacing. The TYWRD2S dimensions (H x W x D) are 3.50.15 mm x 150.35 mm x 17.970.35 mm. Figure 2-1 shows TYWRD2S front and rear views. Figure 2-1 TYWRD2S front and rear views 2.2 Interface Pin Definition Table 2-1 TYWRD2S interface pins Pin No. Symbol I/O Type Function 1 2 3 4 VCC P Power supply pin (3.3 V) 22 I/O GPIO_22, a standard PWM pin, which is connected to GPIO22 (pin 34) on the IC GND P Power supply reference ground pin 23 I/O GPIO_23, a standard PWM pin, which is connected to GPIO23 (pin 33) on the IC Hangzhou Tuya Information Technology Co., Ltd. 6 V2.0.0 TYWRD2S Datasheet Pin No. Symbol I/O Type Function RX I/O
(pin 16) on the IC (See the following Note UART_RX, which is connected to GPIO27 3.) 25 I/O GPIO_25, a standard PWM pin, which is connected to GPIO25 (pin 31) on the IC UART_TX, which is connected to GPIO26 TX Output
(pin 24) on the IC (See the following Note ADC IO24 RST IO3 AI I/O I/O I/O 3.) ADC pin (See the following Note 2.) GPIO_24, a standard PWM pin, which is connected to GPIO24 (pin 32) on the IC Hardware reset pin (active at a low level) GPIO_3, a standard PWM pin, which is connected to GPIO3 (pin 23) on the IC 5 6 7 8 9 10 11 Note:
1. P indicates power supply pins, I/O indicates input/output pins, and AI indicates analog input pins. RST is only a hardware reset pin and cannot clear the Wi-Fi network configuration. 2. This pin can only function as an ADC input and not a common I/O. If this pin is not used, it must be disconnected. When this pin is used as the ADC input, the input voltage range is 0 V to 2.0 V. 3. The UART pins are user-side serial interfaces. Hangzhou Tuya Information Technology Co., Ltd. 7 V2.0.0 TYWRD2S Datasheet 2.3 Test Pin Definition Table 2-2 TYWRD2S test pins Pin No. Symbol I/O Type Function N/A N/A Used for the module production test N/A IO2 Output UART2_TXD, used to display the module internal information, and corresponding to GPIO2 (pin 22) on the IC N/A IO8 I/O GPIO_8, corresponding to GPIO8 (pin 13) on the IC N/A IO0 I/O GPIO_0, corresponding to GPIO0 (pin 36) on the IC Note:
Test pins cannot be used. 3 Electrical Parameters 3.1 Absolute Electrical Parameters Table 3-1 Absolute electrical parameters Parameter Description Minimum Maximum Unit Value Value Ts VCC Storage temperature 20 Power supply voltage 3.0 Static electricity Tamb = 25C N/A 85 3.6 2 C V kV voltage (human body model) Hangzhou Tuya Information Technology Co., Ltd. 8 V2.0.0 TYWRD2S Datasheet Static electricity Tamb = 25C N/A 0.5 kV voltage (machine model) 3.2 Electrical Conditions Table 3-2 Normal electrical conditions Parameter Description Minimum Typical Maximum Unit Value Value Value Ta Working 20 N/A 85 C temperature VCC Working voltage 3.0 VIL I/O low-level 0.3 input 3.3 N/A 3.6 VCC x 0.25 VIH I/O high-level VCC x N/A VCC input 0.75 V V V VOL I/O low-level N/A N/A VCC x V output 0.1 VOH I/O high-level VCC x 0.8 N/A VCC V output Imax I/O drive current N/A N/A 12 mA Hangzhou Tuya Information Technology Co., Ltd. 9 V2.0.0 TYWRD2S Datasheet 3.3 TYWRD2S RX Power Consumption Table 3-4 Power consumption during constant receiving Symbol Mode Rate Typical Value Unit 802.11b 11 Mbit/s 80 802.11g 54 Mbit/s 80 802.11n MCS7 80 mA mA mA IRF IRF IRF 3.4 Working Current Table 3-5 TYWRD2S working current Working Status (Ta = 25C) Average Unit Working Mode EZ AP The module is in EZ mode. The module is in AP mode. Value 70 80 mA mA mA Connected The module is connected to the network. 70 4 RF Features 4.1 Basic RF Features Table 4-1 Basic RF features Parameter Description Frequency band 2.4GHz Wi-Fi standard IEEE 802.11b/g/n20 Data transmission rate 802.11b: 1, 2, 5.5, or 11 (Mbit/s) 802.11g: 6, 9, 12, 18, 24, 36, 48, or 54 (Mbit/s) Hangzhou Tuya Information Technology Co., Ltd. 10 V2.0.0 TYWRD2S Datasheet Parameter Description 802.11n: HT20 MCS0 to MCS7 Antenna type Onboard PCB antenna 4.2 TYWRD2S Output Power Table 4-2 Power during constant transmission Parameter Minimum Typical Maximum Unit Value Value Value Average RF output power, 1 Mbit/s N/A 17 N/A dBm 802.11b CCK mode Average RF output power, 54 Mbit/s N/A 14 N/A dBm 802.11g OFDM mode Average RF output power, MCS7 N/A 13 N/A dBm 802.11n OFDM mode Frequency error 20 N/A 20 ppm 4.3 TYWRD2S RX Sensitivity Table 4-3 RX sensitivity Parameter Minimum Typical Maximum Value Value Value Unit PER < 8%, 802.11b CCK mode PER < 10%, 802.11g OFDM mode PER < 10%, 802.11n OFDM mode 1 Mbit/s N/A 90 N/A dBm 54 Mbit/s N/A 73 N/A dBm MCS7 N/A 70 N/A dBm Hangzhou Tuya Information Technology Co., Ltd. 11 V2.0.0 TYWRD2S Datasheet 5 Antenna Information 5.1 Antenna Type TYWRD2S uses an onboard PCB antenna. 5.2 Antenna Interference Reduction To ensure optimal Wi-Fi performance when the Wi-Fi module uses an onboard PCB antenna, it is recommended that the antenna be at least 15 mm away from other metal parts. To prevent adverse impact on the antenna radiation performance, avoid copper or traces along the antenna area on the PCB. Ensure that there are no substrate media above or below the antenna and that copper is at a certain distance away from the antenna to maximize the antenna radiation performance. Hangzhou Tuya Information Technology Co., Ltd. 12 V2.0.0 TYWRD2S Datasheet 5.3 Antenna Connector Specifications TYWRD2S does not use an antenna connector. 6 Packaging Information and Production Instructions 6.1 Mechanical Dimensions Figure 6-1 TYWRD2S mechanical dimensions Figure 6-2 Side view Hangzhou Tuya Information Technology Co., Ltd. 13 V2.0.0 TYWRD2S Datasheet 6.2 Recommended PCB Encapsulation Figure 6-3 TYWRD2S pins Figure 6-4 PCB encapsulation diagram of TYWRD2S 6.3 Production Instructions 1. Use an SMT placement machine to mount components to the stamp hole module that Tuya produces within 24 hours after the module is unpacked and the firmware is burned. If not, vacuum pack the module again. Bake the module before mounting components to the module.
(1) SMT placement equipment i. Reflow soldering machine Hangzhou Tuya Information Technology Co., Ltd. 14 V2.0.0 TYWRD2S Datasheet ii. Automated optical inspection (AOI) equipment iii. Nozzle with a 6 mm to 8 mm diameter
(2) Baking equipment i. Cabinet oven ii. Anti-static heat-resistant trays iii. Anti-static heat-resistant gloves 2. Storage conditions for a delivered module are as follows:
(1) The moisture-proof bag is placed in an environment where the temperature is below 30C and the relative humidity is lower than 70%.
(2) The shelf life of a dry-packaged product is six months from the date when the product is packaged and sealed.
(3) The package contains a humidity indicator card (HIC). Figure 6-5 HIC for TYWRD2S 3. Bake a module based on HIC status as follows when you unpack the module package:
(1) If the 30%, 40%, and 50% circles are blue, bake the module for 2 consecutive hours.
(2) If the 30% circle is pink, bake the module for 4 consecutive hours.
(3) If the 30% and 40% circles are pink, bake the module for 6 consecutive hours.
(4) If the 30%, 40%, and 50% circles are pink, bake the module for 12 consecutive hours. 4. Baking settings:
(1) Baking temperature: 1255C Hangzhou Tuya Information Technology Co., Ltd. 15 V2.0.0 TYWRD2S Datasheet
(2) Alarm temperature: 130C
(3) SMT placement ready temperature after natural cooling: < 36C
(4) Number of drying times: 1
(5) Rebaking condition: The module is not soldered within 12 hours after baking. 5. Do not use SMT to process modules that have unpacked for over three months. Electroless nickel immersion gold (ENIG) is used for the PCBs. If the solder pads are exposed to the air for over three months, they will be oxidized severely and dry joints or solder skips may occur. Tuya is not liable for such problems and consequences. 6. Before SMT placement, take electrostatic discharge (ESD) protective measures. 7. To reduce the reflow defect rate, draw 10% of the products for visual inspection and AOI before first SMT placement to determine a proper oven temperature and component placement method. Draw 5 to 10 modules every hour from subsequent batches for visual inspection and AOI. 6.4 Recommended Oven Temperature Curve Perform SMT placement based on the following reflow oven temperature curve. The highest temperature is 245C. Based on the IPC/JEDEC standard, perform reflow soldering on a module at most twice. Hangzhou Tuya Information Technology Co., Ltd. 16 V2.0.0 6.5 Storage Conditions TYWRD2S Datasheet 7 MOQ and Packing Information MOQ and packing information Product Model MOQ Packing Modules in Method Each Reel Number of Pack Number of Reel Packs in Each Box Hangzhou Tuya Information Technology Co., Ltd. 17 V2.0.0 TYWRD2S Datasheet 8 Appendix: Statement Federal Communications Commission (FCC) Declaration of Conformity FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this 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. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 15.105 Information to the user.
(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual:
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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body. Hangzhou Tuya Information Technology Co., Ltd. 18 V2.0.0 TYWRD2S Datasheet Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The availability of some specific channels and/or operational frequency bands is country dependent and firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end user. The final end product must be labeled in a visible area with the following:
"Contains Transmitter Module 2ANDL-TYWRD2S"
This radio module must not be installed to co-locate and operating simultaneously with other radios in host system, additional testing and equipment authorization may be required to operating simultaneously with other radio. Declaration of Conformity European notice Hereby, Hangzhou Tuya Information Technology Co., Ltd. declares that this Wi-Fi module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EC. A copy of the Declaration of conformity can be found at https://www.tuya.com. EN 300 328 V2.1.1 EN 301 489-1 V2.1.1; EN 301 489-17 V3.1.1 EN 62311:2008 EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013 Hangzhou Tuya Information Technology Co., Ltd. 19 V2.0.0