Contact Us
Log In

WR1 Module

Last Updated on : 2020-09-28 12:29:03download

Scope of application

This topic describes relevant information about WR1 module during MCU connection development.

WR1 is a low power embedded Wi-Fi module developed by Tuya Smart. The module consists of a highly integrated radio-frequency identification (RFID) chip RTL8710BN and an extended flash chip, with built-in Wi-Fi network protocol stack and various library functions.

WR1 also has low-power ARM CM4F, WLAN MAC, and 1T1R WLAN. The highest basic frequency is 125 MHz. The module has 256 KB built-in static random access memory (SRAM), 2 MB flash, and numerous peripheral resources. As a real time operating system (RTOS) platform, WR1 integrates all function libraries of Wi-Fi MAC and TCP/IP protocols. You can develop your own embedded Wi-Fi products.

For more information, see WR1 Module Datasheet.

Typical application diagram

Figure 1 is a reference diagram of coordinated processing mode of the module and 3.3 V MCU.

WR1 Module

Figure 2 is a reference diagram of coordinated processing mode of the module and 5 V MCU.

WR1 Module

Design specification

  • Module power supply:

    • When the module is in the continuous emission status, the maximum current is 428 mA. It is recommended that supply current of the module should exceed 500 mA, and total capacity of external filter capacitor should exceed 10 uF.
    • In the PCB layout, filter capacitor at the power input pin shall be arranged near the power supply pin.
  • Module pin:

  • Radio frequency (RF) of the module:

    • The module has two types of antennas, PCB onboard antenna and external antenna. By default, PCB onboard antenna is used.

      WR1 Module

    • When a PCB onboard antenna is used in the Wi-Fi module, it is recommended that the distance between the module antenna and other metal parts should be at least 15 mm, in order to optimize the Wi-Fi performance.