Hangzhou Tuya Information Technology WRD2L User Manual
WRD2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd.
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V1.0.0
1. Product Overview
WRD2L is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a
highly integrated RF chip (RDA5981BM) and several peripheral components, with an
embedded Wi-Fi network protocol stack and robust library functions. WRD2L is
embedded with a low-power Arm Cortex-M4 MCU, 2 MB flash memory, and 384 KB static
random-access memory (SRAM), and has extensive peripherals.
WRD2L is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and
TCP/IP protocols. You can develop embedded Wi-Fi products as required.
Tuya WRD2L Wi-Fi Module
No.: 0000000004
Date: 2019-07-26
Product
Manual
Version: 1.0.0
Global Intelligent Platform
1.1 Features
Embedded low-power 32-bit CPU, which can also function as an application
processor
Dominant frequency: 160 MHz
Working voltage: 3.0 V to 3.6 V
Peripherals: five GPIOs and one universal asynchronous receiver/transmitter (UART)
Wi-Fi connectivity
802.11b/g/n
2.4 GHz WiFi
WPA and WPA2 security modes
Up to +20±3dBm output power
STA, AP, and STA+AP working modes
Smart and AP network configuration modes for Android and iOS devices
Onboard PCB antenna with a gain of 2.0 dBi
Working temperature: –40°C to +105°C
1.2 Applications
Intelligent building
Smart household and home appliances
Smart socket and light
Industrial wireless control
Baby monitor
Network camera
Intelligent bus
WRD2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd.
2
V1.0.0
Change History
No.
Date
Change Description
Version After Change
1
2019-09-20
This is the first release.
1.0.0
WRD2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd.
3
V1.0.0
WRD2L Datasheet
Contents
1. Product Overview........................................................................................................................ 1
1.1 Features..............................................................................................................................1
1.2 Applications........................................................................................................................ 2
2 Module Interfaces......................................................................................................................... 6
2.1 Dimensions and Footprint................................................................................................6
2.2 Interface Pin Definition..................................................................................................... 6
2.3 Test Pin Definition..............................................................................................................7
3. Electrical Parameters..................................................................................................................8
3.1 Absolute Electrical Parameters.......................................................................................8
3.2 Electrical Conditions......................................................................................................... 8
3.3 RF Current Consumption................................................................................................. 9
3.4 Working Current.................................................................................................................9
4 RF Features.................................................................................................................................10
4.1 Basic RF Features.......................................................................................................... 10
4.2 TX Performance.............................................................................................................. 10
4.3 RX Performance.............................................................................................................. 11
5 Antenna Information................................................................................................................... 11
5.1 Antenna Type................................................................................................................... 11
5.2 Antenna Interference Reduction................................................................................... 11
6. Packaging Information and Production Instructions............................................................12
6.1 Mechanical Dimensions................................................................................................. 12
6.2 Recommended PCB Layout..........................................................................................13
6.3 Production Instructions...................................................................................................14
6.4 Recommended Oven Temperature Curve..................................................................16
6.5 Storage Conditions......................................................................................................... 17
7. MOQ and Packing Information................................................................................................17
8 Appendix: Statement..................................................................................................................18
Hangzhou Tuya Information Technology Co., Ltd.
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V1.0.0
WRD2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd.
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V1.0.0
Tables
Table 2-1 WRD2L interface pins....................................................................................................6
Table 2-2 WRD2L test pins.............................................................................................................7
Table 3-1 Absolute electrical parameters.....................................................................................8
Table 3-2 Normal electrical conditions..........................................................................................8
Table 3-3 Current consumption during constant transmission and receiving........................9
Table 3-4 WRD2L working current................................................................................................ 9
Table 4-1 Basic RF features.........................................................................................................10
Table 4-2 Performance during constant transmission............................................................. 10
Table 4-3 RX sensitivity.................................................................................................................11
Figures
Figure 1-1 WRD2L architecture...................................................................错误！未定义书签。
Figure 2-1 WRD2L front and rear views.......................................................................................6
Figure 6-2 Side view......................................................................................................................12
Figure 6-3 WRD2L pins.................................................................................................................13
Figure 6-4 WRD2L pin header dimensions............................................................................... 13
Figure 6-5 Layout of the PCB to which WRD2L applies......................................................... 14
Figure 6-6 HIC for WRD2L...........................................................................................................15
Figure 6-7 Oven temperature curve........................................................................................... 16
WRD2L Datasheet
Pin No.
Symbol
I/O Type
Function
1
GPIO25
P
Hardware PWM pin, which is connected to
GPIO25 (pin 31) on the internal IC
2
GPIO24
I/O
Hardware PWM pin, which is connected to
GPIO24 (pin 32) on the internal IC
3
GPIO3
I/O
Hardware PWM pin, which is connected to
GPIO3 (pin 23) on the internal IC
2 Module Interfaces
2.1 Dimensions and Footprint
WRD2L has two rows of pins with a 2±0.1 mm pin spacing.
The WRD2L dimensions (H x W x D) are 2.8±0.15 mm x 17.3±0.35 mm x 15±0.35 mm.
Figure 2-1 shows the WRD2L front and rear views.
Figure 2-1 WRD2L front and rear views
2.2 Interface Pin Definition
Table 2-1 WRD2L interface pins
Hangzhou Tuya Information Technology Co., Ltd.
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V1.0.0
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