Hangzhou Tuya Information Technology WRG1 User Manual

WRG1 User Manual

1. Product Overview

WRG1 is a low power-consuming built-in Wi-Fi module developed by Hangzhou Tuya

Information Technology Co., Ltd. It consists of a highly integrated radio frequency chip

(RTL8711AM) and an external flash chip, with a built-in Wi-Fi network protocol stack and robust library functions. WRG1 also contains a low power-consuming ARM-Cortex M3 MCU， a

WLAN MAC, a 1T1R WLAN, and the maximum basic frequency of 166 MHz, and is embedded with a 2MB SDRAM ，4Mbyte flash, and robust peripheral resources.

WRG1 is an RTOS platform that integrates all the function libraries of the Wi-Fi MAC

and TCP/IP protocols. You can develop built-in Wi-Fi products as required.

1.1 Features

Built-in low power-consuming 32-bit CPU functioning as an application processor

 Basic frequency: 166 MHz

 Working voltage: 3 V to 3.6 V  Peripherals: ten GPIOs, two UARTs, and one ADC  Wi-Fi connectivity

 802.11 B/G/N20/N40

 Channels 1-11@2.4GHz

 Supports WPA/WPA2 safe modes

 SmartConfig mode (for Android and iOS devices)

 Passing the CE, FCC, and SRRC certification

 Working temperature: –20°C to +85°C

1.2 Major Application Fields

 Intelligent building  Intelligent home and household appliances  Healthcare

 Industrial wireless control  Baby monitors  Network camera  Intelligent bus

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WRG1 User Manual

2. Module Interfaces

2.1 Dimensions and Pin Layout

WRG1 provides three rows of pins with the distance of 1.5 mm between every two pins.

WRG1 dimensions: 19±0.25 mm (W) x 25.7±0.25 mm (L) x 3.6±0.2 mm (H)

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2.2 Pin definition

Table 2.1 describes the common pins.

Table 2.1，WRG1 pins description

No. Symbol I/OType Function

1 GND P

2 SWD_TMS AI

3 E_2 I

4 SWD_CLK I/O

5 I2C2_SDA I/O

6 I2C2_SCL I/O

7 ADC AI ADC

8 EN P

9 GND P

10 Rts I/O

Power Reference Ground GPIOE_3，JTAG_TMS,used as JLink Burning foot

GPIOE_2，if E3/E4 configured to JTAG，the foot is not configurable to GPIO。

GPIOE_4，JTAG_CLK，used as JLink Burning foot

GPIOE_1，if E3/E4 configured to JTAG，the foot is not configurable to GPIO。 GPIOE_0，if E3/E4 configured to JTAG，the foot is not configurable to GPIO。

（1）

port

，16-bit accuracy ADC

Module enabling foot, normal use needs to be

connected to 3.3V, module has been pulled up

Power Reference Ground

GPIOA_3, Flow control send request foot, if A6/A7 is configured as UART0，the foot is not configurable to GPIO。

WRG1

User Manual

11 Rx I/O

12 Cts I/O

13 Tx I/O

14 C_3 I/O

15 C_2 I/O 16 GND P

17 3.3V P

18 C_1 I/O

19 C_0 I/O

20 I2C1_SDA I/O

21 I2C1_SCL I/O

22 Log_Tx I/O

23 Log_Rx I/O

24 I2C3_SCL I/O

25 I2C3_SDA I/O

GPIOA_6,UART0_Rx，User docking serial port

GPIOA_5, Flow control sending allowable foot，if A6/A7

configured to UART0，he foot is not configurable to GPIO。

GPIOA_7,UART0_Tx，User docking serial port GPIOC_3，hardware PWM3 GPIOC_2，hardware PWM2

Power Reference Ground Power pin of module（3.3V） GPIOC_1，hardware PWM1 GPIOC_0，hardware PWM0

GPIOC_4，the foot is not configurable to I2C or GPIO

GPIOC_5， can be configurable to I2C or GPIO GPIOB_0，Log Tx，Serial port print information

pin, can not

GPIOB_1，Log Rx，Serial port printing information pin

connect high level

GPIOB_2，can be configurable to I2C or GPIO GPIOB_3，can be configurable to I2C or GPIO

Note: P indicates power-supply pins, I/O indicates input/output pins

(1)The pin can only be used as ADC port, not ordinary IO port. When not in use, it needs to be suspended. As the input port of ADC, the range of input voltage is limited to 0-3.3V. (2)UART0 is the user serial port. When the module is powered on and started, the serial port has information output, which can be ignored by the user.

3. Electrical Parameters

3.1 Absolute electrical parameters

Table 3.1,Absolute Parameters

WRG1

User Manual

Parameters Description

VDD

Static electricity voltage

(human model)

Static electricity voltage

(machine model)

3.2 Electrical Conditions

Table 3.2 Normal electrical conditions

Paramet

ers

Description Min Typ Max Unit

Working

temperature

Minimu m value

Storage

temperature

Power-supply

voltage

TAMB –

25°C

TAMB –

25°C

–20 - 85 °C

–40 105 °C

–0.3 3.6 V

- 2 kV

- 0.5 kV

Maximu

m value

Unit

VDD Working voltage 3.0 3.3 3.6 V

VIL I/O low-level input – - V

VIH I/O high-level input -

VOL I/O low-level output -

high-level

VOH

Imax I/O drive current - - 16 mA

Cpad

I/O

output

Input pin

capacitance

2.0

2.4

- 2 - pF

0.8

0.4

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