Hangzhou Tuya Information Technology WR2 Wi-Fi Module User Manual

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Document ID	4045820
Application ID	JI8HifbjEnm9K08tC2uj6A==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	31.73kB (396609 bits)
Date Submitted	2018-10-23 00:00:00
Date Available	2018-10-23 00:00:00
Creation Date	2018-09-25 16:18:31
Producing Software	Acrobat Distiller 11.0 (Windows)
Document Lastmod	2018-10-23 17:12:29
Document Title	Microsoft Word - WR2_V1.00_EN datasheet - 副本
Document Creator	PScript5.dll Version 5.2.2
Document Author:	baclsh47

WR2 DATASHEET
TuyaSmart Wi-Fi Module
1. Product Overview
WR2 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 W302 12E77H2 and some extra flash that has been
programmed with Wi-Fi network protocol and plenty of software examples.WR2 include a
ARM CM4F, WLAN MAC, 1T1R WLAN, maximum frequency reaches 125MHz, 256K
SRAM, 1M byte flash and various peripheral resources.
WR2 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.
1.1 Features





Integrated low power consumption 32-bit CPU, also known as application processor
Basic frequency of the CPU can support 125 MHz
Supply voltage range: 3.3V DC
Peripherals: 5 GPIO channels, 1 UART, 1 ADC
Wi-Fi connectivity:
 802.11 B/G/N20/N40
 Channel 1 to 11@ 2.4GHz
 Support WPA/WPA2
 +20.11dBm output power in 802.11b mode
 Support SmartConfig function for both Android and IOS devices
WR2 DATASHEET


On-board PCB antenna
Operating temperature range: -20℃ to 85℃
1.2 Main Application Fields







Intelligent Building
Intelligent home, Intelligent household applications
Healthy devices
Industrial wireless control
Baby monitor
Webcam
Intelligent bus
WR2 DATASHEET
2. Dimensions and Footprint
2.1Dimensions
WR2 has 2 columns of Pins. The distance between each Pin is 2 mm.
Size of WR2: 15mm(W)*18mm(L)*3.3mm(H)
Figure 2 shows the dimensions of WR2.
Figure 2. The dimensions of WR2
2.2 Pin Definition
Table 1 shows the general pin attributes of WR2
Table 2.1 The typical pin definition of WR2
PIN
NO.
NAME
TYPE
DISCREPTION
VD33
GPIOA_12
GND
GPIOA_0
I/O
GPIOA_0, can not be pull‐up while booting, can be used as GPIO
while in normal working mode
GPIOA_18
I/O
UART0_RXD
GPIOA_5
I/O
GPIOA_5
GPIOA_23
I/O
UART0_TXD
ADC
AI
ADC terminal(input 5V maximally)
GPIOA_14
I/O
GPIOA_14
10
CHIP_EN
I/O
External reset signal(low level effects)
I/O
Supply voltage (3.3V)
GPIOA_12
Ground
WR2 DATASHEET
11
GPIOA_15
I/O
GPIOA_15
Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input.
WR2 DATASHEET
3. Electrical Characteristics
3.1 Absolute Maximum Ratings
Table 3.1 Absolute Maximum Ratings
PARAMETERS
DESCRIPTION
MIN
MAX
UNIT
Ts
Storage temperature
‐40
105
℃
VDD
Supply voltage
‐0.3
3.6
Static electricity voltage
(human model)
TAMB‐25℃
‐
KV
Static electricity voltage
(machine model)
TAMB‐25℃
‐
0.5
KV
3.2 Electrical Conditions
Table 3.2. Electrical Conditions
PARAMETERS
DESCRIPTION
MIN
TYPICAL
MAX
UNIT
Ta
Working temperature
‐20
‐
85
℃
VCC
Working voltage
‐
3.6
VIL
IO low level input
‐0.3
‐
VCC*0.25
VIH
IO high level input
VCC*0.75
‐
VCC
VOL
IO low level output
‐
‐
VCC*0.1
VoH
IO high level output
VCC*0.8
‐
VCC
Imax
IO drive current
‐
‐
16
mA
Cpad
Input capacitor
‐
‐
pF
3.3 Wi-Fi Transmitting Current Consumptions
Table 3.3. Wi-Fi TX current consumption
PARAMETERS
MODE
RATE
Transmitting power
TYPICAL
UNIT
IRF
11b
1Mbps
+20.11dBm
287
mA
IRF
11g
6Mbps
+20.81dBm
255
mA
IRF
11n HT20
MCS0
+20.29dBm
244
mA
IRF
11n HT40
MCS0
+19.09dBm
220
mA
WR2 DATASHEET
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 CurrentConsumptions
Table 3.5 The module working current consumption
WORK MODE
AT TA=25℃
TYPICAL
MAX*
EZ Mode
UNIT
WR2 is under EZ paring mode, Wi‐Fi indicator
light flashes quickly
115
130
mA
Standby Mode
WR2 is connected, Wi‐Fi indicator light is on
50
110
mA
Operation Mode
WR2 is connected, Wi‐Fi indicator light is on
120
265
mA
Disconnection
Mode
WR2 is disconnected, Wi‐Fi indicator light is off
35
90
mA
Note: peak continuous time is about 5us.
The parameter shown above will vary depending on different firmware functions.
WR2 DATASHEET
4. WLAN Radio Specification
4.1 Basic Radio Frequency Characteristics
Table 41.Basic Radio frequency characteristics
PARAMETERS
DESCRIPTION
Frequency band
2.412GHz to 2.462GHz
Wi‐Fi standard
IEEE 802.11n20/g/b (Terminal 1-11),802.11n40( Terminal 1-7)
Data transmitting rate
11b:1,2,5.5,11(Mbps)
11g:6,9,12,18,24,36,48,54(Mbps)
11n:HT20,MCS0~7
11n:HT40,MCS0~7
Antenna type
On‐board PCB Antenna
4.2Wi-Fi Receiving Sensitivity
Table 4.2. Wi-Fi Receiving sensitivity
PARAMETERS
MIN
TYPICAL
MAX
UNI
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
WR2 DATASHEET
5. Antenna Information
5.1 Antenna Type
Antenna can be connected using On-board PCB antenna by default.
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 minimum15mm distance between the antenna part and the other metal
pieces.
User’s own PCBA design is recommended NOT to pass any wire, NOT do copper pour under
the region of the module’s antenna, to avoid interferences.
6. Packaging Information And Production Guide
6.1 Mechanical Dimensions
Figure 6.1 Top view of the module
6.2PCBRecommended Package
Figure 6.2 PCB schematic Drawing
WR2 DATASHEET
6.3 Production Guide

The storage for the delivered module should meet the following condition:
1. The anti-moisture bag should be kept in the environment with temperature< 30℃ and
humidity< 85% RH.
2. The expiration date is 6 months since the dry packaging products was sealed.
 Cautions:
1. All the operators should wear electrostatic ringin the whole process of production.
2. While operating, water and dirt should not have any contact with the modules.
6.4 Recommended furnace temperature curve
Figure 6.4. PCB Package Drawing Recommended furnace temperature curve
WR2 DATASHEET
FCC Statement
Any Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause
undesired operation.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment .This equipment should be installed and operated with
minimum distance 20cm between the radiator& your body.
FCC Label Instructions:
The outside of final products that contains this module device must display a label
referring to the enclosed module. This exterior label can use wording such as: “Contains
Transmitter Module FCC ID:2ANDL-WR2”,or “Contains FCC ID:2ANDL-WR2”, Any similar
wording that expresses the same meaning may be used.
Hereby, Hangzhou Tuya Information Technology Co.,Ltd , declares that this Wi‐Fi Module is
In compliance with the essential requirements and other relevant provisions of Directive
2014/53/EU.
This equipment should be installed and operated with a minimum distance of 20cm between the
radiator and your body.
Environment friendly disposal
You can help protect the environment!
Please remember to respect the local regulations: hand in
the non‐working electrical equipments to an appropriate
waste disposal centre.

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Format                          : application/pdf
Title                           : Microsoft Word - WR2_V1.00_EN datasheet - 副本
Creator                         : baclsh47
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