Hangzhou Tuya Information Technology WBR2 Installation Guide

Tuya WBR2 Wi-Fi and Bluetooth Module
Version: 2.0.0 Date: 2019-10-28
No.: 0000000001

1. Product Overview

Product
Manual
WBR2 is a low-power embedded Wi-Fi and Bluetooth module that Tuya has developed. It
consists of a highly integrated RF chip (RTL8720CF) with an embedded Wi-Fi network
protocol stack and robust library functions. WBR2 also contains a low-power KM4
microcontroller unit (MCU), a WLAN MAC, a 1T1R capable WLAN baseband, 256 KB
static random-access memory (SRAM), 2 MB flash memory, and extensive peripherals.
WBR2 is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and
TCP/IP protocols. You can develop embedded Wi-Fi and Bluetooth products as required.
Figure 1-1 shows the WBR2 architecture.
Figure 1-1 WBR2 architecture
1
WBR2 Datasheet

1.1 Features

Embedded low-power KM4 MCU, which can also function as an application processor
Clock rate: 100 MHz
Working voltage: 3.0 V to 3.6 V
Peripherals: six GPIOs and one universal asynchronous receiver/transmitter (UART)
Wi-Fi connectivity
802.11b/g/n20
Channels 1 to 14 at 2.4 GHz
Compatible with Bluetooth low energy (BLE) 4.2(Up to +9dBm EIPR output
power)
WPA and WPA2 security modes
Up to +20 dBm EIRP output power in 802.11b mode
EZ net pairing mode for Android and iOS devices
Onboard PCB antenna
Certified by CE, FCC, and SRRC
Working temperature: –20°C to +85°C

1.2 Application Scenarios

Intelligent building
Smart household and home appliances
Smart socket and light
Industrial wireless control
Baby monitor
Network camera
Intelligent bus
2
Change History
No.
Date
Change Description
Version After Change
1
2019-10-28
This is the first release.
2.0.0
WBR2 Datasheet
3
WBR2 Datasheet
Contents
1. Product Overview........................................................................................................................ 1
1.1 Features..............................................................................................................................2
1.2 Application Scenarios....................................................................................................... 2
2. Module Interfaces........................................................................................................................ 6
2.1 Dimensions and Footprint................................................................................................ 6
2.2 Interface Pin Definition..................................................................................................... 6
3. Electrical Parameters..................................................................................................................7
3.1 Absolute Electrical Parameters....................................................................................... 7
3.2 Working Conditions........................................................................................................... 8
3.3 RF Current Consumption................................................................................................. 8
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............................................................ 11
6.1 Mechanical Dimensions................................................................................................. 11
6.2 Recommended PCB Layout..........................................................................................12
6.3 Production Instructions...................................................................................................13
6.4 Recommended Oven Temperature Curve and Soldering Temperature................ 14
6.5 Storage Conditions......................................................................................................... 16
7. MOQ and Packing Information................................................................................................18
8. Appendix: Statement.................................................................................................................19
4
WBR2 Datasheet
Tables
Table 2-1 WBR2 interface pins.............................................................................................. 6
Table 3-1 Absolute electrical parameters............................................................................. 7
Table 3-2 Normal working conditions....................................................................................8
Table 3-3 Current consumption during constant transmission......................................... 8
Table 3-4 Current consumption during constant receiving............................................... 9
Table 3-5 Working current.......................................................................................................9
Table 4-1 Basic RF features.................................................................................................10
Table 4-2 Performance during constant transmission..................................................... 10
Table 4-3 RX sensitivity.........................................................................................................11
Table 6-1 Recommended wave soldering temperature.................................................. 15
Figures
Figure 1-1 WBR2 architecture............................................................................................... 1
Figure 2-1 WBR2 front and rear views................................................................................. 6
Figure 6-1 WBR2 mechanical dimensions........................................................................ 12
Figure 6-2 WBR2 pins...........................................................................................................12
Figure 6-3 Top and bottom views of the PCB to which WBR2 applies.........................13
Figure 6-4 Oven temperature curve................................................................................... 15
Figure 6-5 HIC for WBR2..................................................................................................... 16
5
WBR2 Datasheet
Pin No.
Symbol
I/O Type
Function
1
3V3
N/A
Power supply pin (3.3 V)
2
A19
I/O
GPIOA_19, hardware PWM pin, which is
connected to pin 40 on the internal IC

2. Module Interfaces

2.1 Dimensions and Footprint

WBR2 has two rows of pins with a 2 mm pin spacing.
The WBR2 dimensions (H x W x D) are 2.9±0.15 mm x 15±0.35 mm x 18±0.35 mm. Figure
2-1 shows the WBR2 front and rear views.
Figure 2-1 WBR2 front and rear views

2.2 Interface Pin Definition

Table 2-1 WBR2 interface pins
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