Wi-Fi module introduction--TYJW2

Last Updated on : 2021-04-22 10:20:55download

1. Product Overview

​ TYJW2 is a Wi-Fi module with 5V TTL UART series port interface designed by Hangzhou Tuya Information Technology Co., Ltd.,. The module consist a highly integrated wireless radio chip ESP8266EX and extra flash which has been programmed with Wi-Fi network protocol and plenty of software examples. TYJW2 also has a 32-bit CPU, 1M byte flash and 36k SRAM.

​ TYJW2 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 TYJW2:

Wi-Fi module introduction--TYJW2

1.1 Feature

  • Integrated low power consumption 32-bit CPU, also known as application processor

​ Basic frequency can support 80MHz and 160MHz

  • Supply voltage range: 4.5V-5.5V
  • Peripherals: 1*UART (5V TTL)
  • Wi-Fi connectivity:

​ 802.11 b/g/n

​ Channel 1-14@2.4GHz

​ Support WPA/WPA2

​ +20dBm output power in 802.11b mode

​ Support STA/AP/STA+AP operation mode

​ Support SmartConfig function for both Android and IOS devices

​ On-board PCB antenna, or IPEX connect for external antenna

​ Operating temperature range: -20℃ to 85℃

1.2 Main application Fields

  • Intelligent Building
  • Intelligent home, Intelligent household applications
  • Health care
  • Industrial wireless control

2. Dimensions and Footprint

2.1 Dimensions

​ TYJW2 has an interface of PHS connection port. The distance between each Pin is 2mm.

​ Size of TYJW2: 49.6mm(W)*31mm(L)*9.1mm(H)

​ Figure 2 shows the dimensions of TYJW2.

​ Figure 2. The dimensions of TYJW2

Wi-Fi module introduction--TYJW2

2.2 Pin Definition

Table 1 shows the general pin attributes of TYJW2

​ Table 1. The typical pin definition of TYJW2

1RXI/ORX port, input 5V TTL
2TXI/OTX port, output 5V TTL
4VCCPSupply Voltage 5V

​ Note: P: Power supply pins; I/O: Digital input or output pins;

Test Point Definition

​ The test point pin definition is shown as table 2:

​ Table 2. The typical pin definition of TYJW2

53.3VPInternal 3.3V voltage pin
7BOOTI/OIO0 pin, firmware burning selection pin
8TXD1I/OInformation print pin
9RXD0I/OFirmware burning pin
10TXD0I/OFirmware burning pin
11RSTI/OReset pin

Note: P: Power supply pins; I/O: Digital input or output pins

If IO0 is unconnected, module in normal working mode; If IO0 is in negative level, module is in firmware burning mode.

RST is used for module hardware reset, can not clear Wi-Fi connection information.

These test point is not recommended for regular usage.

3. Electrical Characteristics

3.1 Absolute Maximum Ratings

​ Table 3. Absolute Maximum Ratings

TsStorage temperature-2085
VCCSupply voltage-0.35.5V
Static electricity voltage (human model)TAMB-25℃-2KV
Static electricity voltage (machine model)TAMB-25℃-0.5KV

3.2 Electrical Conditions

​ Table 4. Electrical Conditions

TaWorking temperature-20-85
VCCWorking voltage4.555.5V
VILIO negative level input-0.3-VCC*0.25V
VIHIO positive level inputVCC*0.75-VCCV
VOLIO negative level output--VCC*0.1V
VoHIO positive level outputVCC*0.8-VCCV
ImaxIO drive current--5mA

3.3 Wi-Fi Transmitting Current Consumptions

​ Table 5. Wi-Fi TX current consumption


3.4 Wi-Fi Receiving Current Consumptions

​ Table 6. Wi-Fi RX current consumption


3.5 Working Mode Current Consumptions

​ Table 7. MCU working current consumption

EZ ModeModule is under EZ paring mode, Wi-Fi indicator light flashes quickly90151mA
AP ModeModule is under AP paring mode, Wi-Fi indicator light flashes slowly101451mA
Operation ModeModule is connected, Wi-Fi indicator light is on58.5411mA
Disconnection ModeModules is disconnected, Wi-Fi indicator light is off156430mA

4. WLAN Radio Specification

Basic Radio Frequency Characteristics

​ Table 8. Basic Radio frequency characteristic

Frequency band2.4GHz to 2.5GHz
Wi-Fi standardIEEE 802.11n/g/b (Terminal 1-14)
Data transmitting rate11b:1,2,5.5,11(Mbps)
Antenna typeOn-board PCB Antenna (Default)
UF.L RF external antenna (optinal)

Wi-Fi Transmitting Power

​ Table 9. Wi-Fi transmitting power

RF average output power, 802.11b CCK Mode11M-20-dBm
RF average output power, 802.11g OFDM Mode54M-17-dBm
RF average output power, 802.11n OFDM ModeMCS7-14-dBm
The Frequency error -10-10ppm

4.3 Wi-Fi Receiving Sensitivity

​ Table 10. Wi-Fi Receiving sensitivity

PER<8%, Receiving sensitivity, 802.11b CCK Mode11M--91-dBm
PER<10%, Receiving sensitivity, 802.11g OFDM Mode54M--75-dBm
PER<10%, Receiving sensitivity, 802.11n OFDM ModeMCS7--72-dBm

5. Antenna Information

5.1 Antenna Type

​ Antenna can be connected using On-board PCB antenna or an external antenna, the default way is using the On-board PCB antenna.

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 minimum 15mm distance between the antenna part and the other metal pieces.

5.3 U.FL RF Connector

Figure 3 shows the physical parameter of the U.FL RF connector.

​ Figure 3. The physical parameter of the U.FL RF connector

Wi-Fi module introduction--TYJW2

6. Packaging Information And Production Guide

6.1 Mechanical Dimensions

​ Figure 4. Top view of the module

Wi-Fi module introduction--TYJW2

6.2 Production Guide

  • The storage for the delivered module should meet the following condition:

  • The anti-moisture bag should be kept in the environment with temperature < 30℃ and humidity < 85% RH.

  • The expiration date is 6 months since the dry packaging products was sealed.

  • Cautions:

  • All the operators should wear electrostatic ring in the whole process of production.

  • While operating, water and dirt should not have any contact with the modules.