Wi-Fi module introduction--TYJW2
Last Updated on : 2024-06-14 07:42:41download
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:
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
2.2 Pin Definition
Table 1 shows the general pin attributes of TYJW2
Table 1. The typical pin definition of TYJW2
| PIN NO. | NAME | TYPE | DESCRIPTION |
|---|---|---|---|
| 1 | RX | I/O | RX port, input 5V TTL |
| 2 | TX | I/O | TX port, output 5V TTL |
| 3 | GND | P | Ground |
| 4 | VCC | P | Supply 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
| PIN NO. | NAME | TYPE | DESCRIPTION |
|---|---|---|---|
| 5 | 3.3V | P | Internal 3.3V voltage pin |
| 6 | GND | P | Ground |
| 7 | BOOT | I/O | IO0 pin, firmware burning selection pin |
| 8 | TXD1 | I/O | Information print pin |
| 9 | RXD0 | I/O | Firmware burning pin |
| 10 | TXD0 | I/O | Firmware burning pin |
| 11 | RST | I/O | Reset 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
| PARAMETERS | DESCRIPTION | MIN | MAX | UNIT |
|---|---|---|---|---|
| Ts | Storage temperature | -20 | 85 | ℃ |
| VCC | Supply voltage | -0.3 | 5.5 | V |
| Static electricity voltage (human model) | TAMB-25℃ | - | 2 | KV |
| Static electricity voltage (machine model) | TAMB-25℃ | - | 0.5 | KV |
3.2 Electrical Conditions
Table 4. Electrical Conditions
| PARAMETERS | DESCRIPTION | MIN | TYPICAL | MAX | UNIT |
|---|---|---|---|---|---|
| Ta | Working temperature | -20 | - | 85 | ℃ |
| VCC | Working voltage | 4.5 | 5 | 5.5 | V |
| VIL | IO negative level input | -0.3 | - | VCC*0.25 | V |
| VIH | IO positive level input | VCC*0.75 | - | VCC | V |
| VOL | IO negative level output | - | - | VCC*0.1 | V |
| VoH | IO positive level output | VCC*0.8 | - | VCC | V |
| Imax | IO drive current | - | - | 5 | mA |
3.3 Wi-Fi Transmitting Current Consumptions
Table 5. Wi-Fi TX current consumption
| PARAMETERS | MODE | RATE | TYPICAL | UNIT |
|---|---|---|---|---|
| IRF | 11b | 11Mbps | 260 | mA |
| IRF | 11g | 54Mbps | 100 | mA |
| IRF | 11n | MCS7 | 100 | mA |
3.4 Wi-Fi Receiving Current Consumptions
Table 6. Wi-Fi RX current consumption
| PARAMETERS | MODE | RATE | TYPICAL | UNIT |
|---|---|---|---|---|
| IRF | 11b | 11Mbps | 70 | mA |
| IRF | 11g | 54Mbps | 70 | mA |
| IRF | 11n | MCS7 | 70 | mA |
3.5 Working Mode Current Consumptions
Table 7. MCU working current consumption
| WORK MODE | AT TA=25℃ | TYPICAL | MAX* | UNIT |
|---|---|---|---|---|
| EZ Mode | Module is under EZ paring mode, Wi-Fi indicator light flashes quickly | 90 | 151 | mA |
| AP Mode | Module is under AP paring mode, Wi-Fi indicator light flashes slowly | 101 | 451 | mA |
| Operation Mode | Module is connected, Wi-Fi indicator light is on | 58.5 | 411 | mA |
| Disconnection Mode | Modules is disconnected, Wi-Fi indicator light is off | 156 | 430 | mA |
4. WLAN Radio Specification
Basic Radio Frequency Characteristics
Table 8. Basic Radio frequency characteristic
| PARAMETERS | DESCRIPTION |
|---|---|
| Frequency band | 2.4GHz to 2.5GHz |
| Wi-Fi standard | IEEE 802.11n/g/b (Terminal 1-14) |
| Data transmitting rate | 11b:1,2,5.5,11(Mbps) |
| 11g:6,9,12,18,24,36,48,54(Mbps) | |
| 11n:HT20,MCS0~7 | |
| Antenna type | On-board PCB Antenna (Default) |
| UF.L RF external antenna (optinal) |
Wi-Fi Transmitting Power
Table 9. Wi-Fi transmitting power
| PARAMETERS | MIN | TYPICAL | MAX | UNIT | |
|---|---|---|---|---|---|
| RF average output power, 802.11b CCK Mode | 11M | - | 20 | - | dBm |
| RF average output power, 802.11g OFDM Mode | 54M | - | 17 | - | dBm |
| RF average output power, 802.11n OFDM Mode | MCS7 | - | 14 | - | dBm |
| The Frequency error | -10 | - | 10 | ppm |
4.3 Wi-Fi Receiving Sensitivity
Table 10. Wi-Fi Receiving sensitivity
| PARAMETERS | MIN | TYPICAL | MAX | UNIT | |
|---|---|---|---|---|---|
| PER<8%, Receiving sensitivity, 802.11b CCK Mode | 11M | - | -91 | - | dBm |
| PER<10%, Receiving sensitivity, 802.11g OFDM Mode | 54M | - | -75 | - | dBm |
| PER<10%, Receiving sensitivity, 802.11n OFDM Mode | MCS7 | - | -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
6. Packaging Information And Production Guide
6.1 Mechanical Dimensions
Figure 4. Top view of the module
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.
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