WBR1 Datasheet
Tuya WBR1 Wi-Fi and Bluetooth
Global Intelligent Platform
1. Product Overview
WBR1 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. WBR1 also contains a low-power KM4
multipoint control unit (MCU), WLAN MAC, 1T1R WLAN, 256 KB static random-access
memory (SRAM), and 2 MB flash memory, and has extensive peripherals.
WBR1 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.
Figure 1-1 shows the WBR1 architecture.
Figure 1-1 WBR1 architecture
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WBR1 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: seven GPIOs and two universal asynchronous receivers/transmitters
(UARTs)
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 EIPR output power in 802.11b mode
Smart network configuration for Android and iOS devices
Onboard PCB antenna
Certified by CE, FCC, and SRRC
Working temperature: –20°C to +85°C
1.2 Applications
Intelligent building
Smart household and home appliances
Smart socket and light
Industrial wireless control
Baby monitor
Network camera
Intelligent bus
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Change History
This is the first release.
WBR1 Datasheet
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WBR1 Datasheet
Contents
1. Product Overview.........................................................................................................................1
1.1 Features.............................................................................................................................. 2
1.2 Applications.........................................................................................................................2
2 Module Interfaces..........................................................................................................................6
2.1 Dimensions and Footprint................................................................................................ 6
2.2 Interface Pin Definition......................................................................................................6
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...............................................................................................................11
4.3 RX Performance.............................................................................................................. 11
5 Antenna Information................................................................................................................... 12
5.1 Antenna Type................................................................................................................... 12
5.2 Antenna Interference Reduction...................................................................................12
6 Packaging Information and Production Instructions.............................................................12
6.1 Mechanical Dimensions................................................................................................. 12
6.2 Recommended PCB Layout..........................................................................................14
6.3 Production Instructions...................................................................................................15
6.4 Recommended Oven Temperature Curve.................................................................. 17
6.5 Storage Conditions..........................................................................................................18
7 MOQ and Packing Information................................................................................................. 19
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WBR1 Datasheet
Tables
Table 2-1 WBR1 interface pins...................................................................................................... 6
Table 3-1 Absolute electrical parameters.....................................................................................8
Table 3-2 Normal electrical conditions..........................................................................................8
Table 3-3 Power consumption during constant transmission................................................... 9
Table 3-4 Power consumption during constant receiving..........................................................9
Table 3-5 WBR1 working current...................................................................................................9
Table 4-1 Basic RF features.........................................................................................................10
Table 4-2 Performance during constant transmission............................................................. 11
Table 4-3 RX sensitivity.................................................................................................................11
Figures
Figure 1-1 WBR1 architecture....................................................................................................... 1
Figure 2-1 WBR1 front and rear views......................................................................................... 6
Figure 6-1 WBR1 mechanical dimensions................................................................................ 13
Figure 6-2 Side view......................................................................................................................13
Figure 6-3 WBR1 pins...................................................................................................................14
Figure 6-4 Layout of the PCB to which WBR1 applies............................................................15
Figure 6-5 HIC for WBR1............................................................................................................. 16
Figure 6-6 Oven temperature curve........................................................................................... 17
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WBR1 Datasheet
VinPUART_TX power conversion pin (5 V or 3.3 V)
GPIOA_14, UART_TX (user-side serial
interface)
GPIOA_13, UART_RX (user-side serial
interface)
2 Module Interfaces
2.1 Dimensions and Footprint
WBR1 has two rows of 16 pins (2 x 8) with a 2 mm pin spacing.
The WBR1 dimensions (H x W x D) are 2.9±0.15 mm x 18±0.35 mm x 23.5±0.35 mm.
Figure 2-1 shows the WBR1 front and rear views.
Figure 2-1 WBR1 front and rear views
2.2 Interface Pin Definition
Table 2-1 WBR1 interface pins
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WBR1 Datasheet
3V3PPower supply pin (3.3 V)
Power supply reference ground pin
GPIOA_2, hardware PWM pin, which is
connected to pin 18 on the internal IC
GPIOA_3, hardware PWM pin, which is
connected to pin 19 on the internal IC
GPIOA_16, UART_Log_TXD, which is used
for printing the module internal information
and can be configured as a common GPIO
GPIOA_4, hardware PWM pin, which is
connected to pin 20 on the internal IC
GPIOA_11, hardware PWM pin, which is
connected to pin 25 on the internal IC
GPIOA_15, UART_Log_RXD, which is used
for printing the module internal information
and can be configured as a common GPIO
GPIOA_12, hardware PWM pin, which is
connected to pin 26 on the internal IC
GPIOA_17, hardware PWM pin, which is
connected to pin 38 on the internal IC
Power supply reference ground pin
Power supply reference ground pin
Enable pin, which is active at a high level (The
pin has been pulled up and is externally
controllable.)
GPIOA_18, hardware PWM pin, which is
connected to pin 39 on the internal IC
Power supply reference ground pin
Note:
P indicates power supply pins, and I/O indicates input/output pins.
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