Hangzhou Tuya Information Technology TYWRD2S User Manual

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

TYWRD2S Datasheet

Hangzhou Tuya Information Technology Co., Ltd. 2 V2.0.0

⚫ 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

TYWRD2S Datasheet

Hangzhou Tuya Information Technology Co., Ltd. 3 V2.0.0

Change History

No.

Date

Change Description

Version After Change

1

2019-07-26

This is the first release.

2.0.0

TYWRD2S Datasheet

Hangzhou Tuya Information Technology Co., Ltd. 4 V2.0.0

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

TYWRD2S Datasheet

Hangzhou Tuya Information Technology Co., Ltd. 5 V2.0.0

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

TYWRD2S Datasheet

Hangzhou Tuya Information Technology Co., Ltd. 6 V2.0.0

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 (3.3 V)

2

22

I/O

GPIO_22, a standard PWM pin, which is
connected to GPIO22 (pin 34) on the IC

3

GND

P

Power supply reference ground pin

4

23

I/O

GPIO_23, a standard PWM pin, which is
connected to GPIO23 (pin 33) on the IC