The TYWE3S Module Socket Circuit

Last Updated on : 2021-04-22 10:20:24download

This topic describes the typical circuit design and the package of the TYWE3S module socket.

Typical application diagram

The typical application diagram of the TYWE3S module socket is as follows. The TYWE3S Module Socket Circuit

S1 button is a reset button of the Wi-Fi module, and D2 is a status indicator light of the Wi-Fi module. The relation between the default D2 status for Tuya products and Wi-Fi module working status is as follows.

D2 status D2 display Working status of Wi-Fi module
Flicker fast On and off interval is 250 ms Fast connection mode (SmartConfig mode)
Flicker slowly On and off interval is 1,500 ms Compatible mode (AP pairing mode)
Always on Always on Wi-Fi module is connected to the router
Always off Always off Wi-Fi module is disconnected from the router

Design specification

Circuit design

Parameter Description
Power consumption 3.3V/100 mA. Transient (5 us) current: 450 mA. Recommended supply current is ≥ 300 mA.
C1/C2 Power filter capacitor. The power filter capacitor should be arranged near the VCC pin.
TXD/RXD serial port It is a serial port mode by default.
Note: If you need to use this serial port as a general I/O port, contact technicians.
ADC pin The voltage acquisition pin cannot be used as a general I/O port.
Note: When not in use, the pin can float.
I/O0 pin This pin takes part in the normal start of the module. During power-on and start, the pin requires a high electrical level to start normally.
  • When it is used as an output port, it is recommended to add a pull-up resistor.
  • When it is used as an input port, consider the electrical level of the pin during power-on.
  • When not in use, the pin can float.
I/O2 pin This pin takes part in the normal start of the module. During power-on and start, it requires a high electrical level to start normally.
It is a debugging port of the module by default. Data is output during power-on. It can only be used as an output port.
Note: When not in use, the pin can float.
I/O15 This pin takes part in the normal start of the module. During power-on and start, it requires a low electrical level to start normally.
A pull-down resistor must be added to the pin.
RST pin The module hardware reset pin, which is active low.
I/O16 pin Avoid any pull-up resistor in the pin while using.
LED2 pin Relay status indicator.
LED1 pin Wi-Fi status indicator.
Reset button Active low.
  • Press the button: Turn on or off the relay.
  • Press and hold for 5 seconds: Clear Wi-Fi configurations.
RELAY pin Coil for control of the relay. The maximum driving capacity of the module I/O port is 12 mA.
Note: The I/O driving capacity of the module shall be greater than the driving current required by the relay.
No. 9 to 14 pins They shall float.
Other unused pins They can float.

Module antenna

Wiring and copper pour are not allowed below this area of the antenna, and the PCB shall be hollowed out, in order not to affect the antenna performance.

Package description

The TYWE3S Module Socket Circuit