Hangzhou Tuya Information Technology WR3LE User Manual
WR3LE User Manual
TuyaSmartWi-Fi Module
1. Product Overview
WR3LE is a low power consumption module with built-in Wi-Fi connectivity solution
designed by Hangzhou Tuya Information Technology Co.,Ltd. The Wi-Fi Module consists of a
highly integrated wireless radio chip RTL8710BX and some extra flash that has been programed
with Wi-Fi network protocol and plenty of software examples.WR3LE include a ARM CM4F,
WLAN MAC, 1T1R WLAN, maximum frequency reaches 125MHz, 256K SRAM, 2Mbyte
flash and various peripheral resources.
WR3LE is a RTOS
function examples, users can customize their Wi-Fi product by using these software examples.
1.1 Features
platform, embedded with all the Wi-Fi MAC and TCP/IP protocol
Integrated low power consumption 32-bit CPU, also known as application processor
Basic frequency of the CPU can support 125 MHz
Supply voltage range: 3V to 3.6V
Peripherals:7 GPIO channels, 2 UART, 1 ADC
Wi-Fi connectivity:
802.11 B/G/N20/N40
Channel 1 to 11@ 2.4GHz
Support WPA/WPA
Support Smart Config function for both Android and IOS devices
On-board PCB antenna
Pass CE, FCC, SRRC certifications
Operating temperature range: -20℃ to105℃
2
1.2 Main ApplicationFields
Intelligent Building
Intelligent home, Intelligent household applications
Healthy devices
Industrial wireless control
Baby monitor
Webcam
Intelligent bus
WR3LE User Manual
2. Dimensions an d F oot pr in t
2.1Dimensions
WR3LE has 2 columns of Pins (2*8).The distance between each Pin is2 mm.
Size of WR3LE: 16 mm (W)×24 mm (L) ×3.3 mm (H)
Figure1. dimension Drawing
2.2 Pin Definition
Table 1 shows the generalpin attributes of WR3LE
Table 1. The typical pin definition of WR3LE
PIN
NO.
1
2
NAME TYPE DISCREPTION
NC / Dangling don't pick up, in order to compatible with other
modules
ADC AI
ADC，Max5V
WR3LE User Manual
3
CHIP_EN I/O
4
GPIOA_29 I/O U A RT_Log_RXD GPIO
5
GPIOA_14 I/O
6
GPIOA_15 I/O
7
GPIOA_22 I/O GPIOA_22
8
VCC P
9
GND P
10
GPIOA_0 I/O
11
GPIOA_30 I/O U A RT_Log_TXD GPIO
12 GPIOA_19 I/O GPIOA_19
13 GPIOA_5 I/O
14 GPIOA_12 I/O
15 RXD I/O UART0_RXD
16 TXD I/O UART0_TXD
Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input.
GPIOA_14，hardware PWM
GPIOA_15，hardware PWM
（3.3V）
GPIOA_0，HardwarePWM
GPIOA_5，hardware PWM
GPIOA_12，hardware PWM
3. Electrical Characteristics
3.1 Absolute Maximum Ratings
Table 3.1. Absolute Maximum Ratings
PARAMETERS DESCRIPTION MIN MAX UNIT
Ts Storage temperature -40 125
VCC Supply voltage -0.3 3.6 V
Static electricity voltage
(human model)
Static electricity voltage
(machine model)
TAMB-25℃
TAMB-25℃
- 2 KV
- 0.5 KV
3.2 Electrical Conditions
Table 3.2. Electrical Conditions
PARAMETERS DESCRIPTION MIN TYPICAL MAX UNIT
Ta Working temperature -20 - 105
VCC Working voltage 3 - 3.6 V
VIL IO low level input -0.3 - VDD*0.25 V
VIH IO high level input VDD*0.75 - VDD V
VOL IO low level output - - VDD*0.1 V
℃
℃
WR3LE User Manual
VoH IO high level output VDD*0.8 - V V
Imax IO drive current - - 16 mA
Cpad Input capacitor - 2 - pF
3.3 Wi-Fi Transmitting Current Consumptions
Table 3.3. Wi-Fi TX current consumption
PARAMETERS MODE RATE
IRF 11b
IRF 11g
IRF 11n bw20
IRF 11n bw40
1Mbps
6Mbps
MCS0
MCS0
Transmitting power
21.54
24.01
23.11
22.36
TYPICAL UNIT
287 mA
267 mA
244 mA
220 mA
3.4 Wi-Fi Receiving Current Consumptions
Table 3.4. Wi-Fi RX current consumption
PARAMETERS MODE TYPICAL UNIT
IRF CPU sleep 90 mA
IRF CPU active 120 mA
3.5 Working Mode Current Consumptions
Table 3.5. The module working current consumption
WORK MODE
EZ Mode WR3LE is under EZ paring mode, Wi-Fi indicator
Standby Mode WR3LE is connected, Wi-Fi indicator light is on
Operation Mode WR3LE is connected, Wi-Fi indicator light is on
Disconnection
Mode
Note: peak continuous time is about 5 us.
The parameter shown above will vary depending on different firmware functions.
AT TA = 2 5 ℃
light flashes quickly
WR3LE is disconnected, Wi-Fi indicator light is
off
TYPICAL MAX* UNIT
115 125
60 209
118 198
34 192
mA
mA
mA
mA
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