Product Manual

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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.

Tuya TYWRD2S Wi-Fi Module

Version: 2.0.0

Date: 2019-09-04

No.: 0000000001

Product

Manual

Global Intelligent Platform

Summary of content (19 pages)

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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.
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TYWRD2S Datasheet ⚫ Working temperature: –20°C to +85°C 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.
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TYWRD2S Datasheet Change History No. 1 Date 2019-07-26 Change Description This is the first release. Hangzhou Tuya Information Technology Co., Ltd. 3 Version After Change 2.0.0 V2.0.
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TYWRD2S Datasheet Contents 1. Product Overview ............................................................................................................ 1 1.1 Features.................................................................................................................. 1 1.2 Applications ............................................................................................................ 2 2 Module Interfaces ............................................................................
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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 .........................................................................
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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 3.5±0.15 mm x 15±0.35 mm x 17.97±0.35 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 VCC P Power supply pin (3.
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TYWRD2S Datasheet Pin No. Symbol I/O Type 5 Function UART_RX, which is connected to GPIO27 RX I/O (pin 16) on the IC (See the following Note 3.) 6 25 I/O GPIO_25, a standard PWM pin, which is connected to GPIO25 (pin 31) on the IC 7 UART_TX, which is connected to GPIO26 TX Output (pin 24) on the IC (See the following Note 3.) 8 ADC AI ADC pin (See the following Note 2.
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TYWRD2S Datasheet 2.3 Test Pin Definition Table 2-2 TYWRD2S test pins Pin No. Symbol N/A N/A IO2 I/O Type Function N/A Used for the module production test 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.
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TYWRD2S Datasheet Static electricity Tamb = 25°C N/A 0.5 kV Unit voltage (machine model) 3.2 Electrical Conditions Table 3-2 Normal electrical conditions Parameter Ta Description Working Minimum Typical Maximum Value Value Value –20 N/A 85 °C temperature VCC Working voltage 3.0 3.3 3.6 V VIL I/O low-level –0.3 N/A VCC x V input VIH VOL 0.25 I/O high-level VCC x input 0.75 I/O low-level N/A N/A VCC V N/A VCC x V output VOH I/O high-level 0.1 VCC x 0.
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TYWRD2S Datasheet 3.3 TYWRD2S RX Power Consumption Table 3-4 Power consumption during constant receiving Symbol Mode Rate Typical Value Unit IRF 802.11b 11 Mbit/s 80 mA IRF 802.11g 54 Mbit/s 80 mA IRF 802.11n MCS7 80 mA 3.4 Working Current Table 3-5 TYWRD2S working current Working Working Status (Ta = 25°C) Mode Average Unit Value EZ The module is in EZ mode. 70 mA AP The module is in AP mode. 80 mA Connected The module is connected to the network.
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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 Average RF output power, Minimum Typical Maximum Value Value Value Unit 1 Mbit/s N/A 17 N/A dBm 54 Mbit/s N/A 14 N/A dBm MCS7 N/A 13 N/A dBm –20 N/A 20 ppm 802.11b CCK mode Average RF output power, 802.11g OFDM mode Average RF output power, 802.11n OFDM mode Frequency error 4.
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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.
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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.
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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.
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TYWRD2S Datasheet ii. Automated optical inspection (AOI) equipment iii. Nozzle with a 6 mm to 8 mm diameter (2) Baking equipment 2. i. Cabinet oven ii. Anti-static heat-resistant trays iii. Anti-static heat-resistant gloves Storage conditions for a delivered module are as follows: (1) The moisture-proof bag is placed in an environment where the temperature is below 30°C and the relative humidity is lower than 70%.
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TYWRD2S Datasheet (2) Alarm temperature: 130°C (3) SMT placement ready temperature after natural cooling: < 36°C (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.
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TYWRD2S Datasheet 6.5 Storage Conditions 7 MOQ and Packing Information MOQ and packing information Number of Product Model MOQ Packing Modules in Method Each Reel Pack Hangzhou Tuya Information Technology Co., Ltd. 17 Number of Reel Packs in Each Box V2.0.
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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.
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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.