TUYA WB2L User manual

WB2L Module Datasheet
Hardware Product Development > Network Modules > Wi-Fi & BLE
Dual Mode Module > WB Series Module
Version: 20210105
Online Version

Contents
Contents
1 Product overview 2
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Change history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Module interfaces 3
2.1 Dimensions and footprint . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Interface pin definition . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Test pin definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Electrical parameters 8
3.1 Absolute electrical parameters . . . . . . . . . . . . . . . . . . . . . 8
3.2 Working conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Current consumption during constant transmission and receiving . . . 9
3.4 Working current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 RF features 11
4.1 Basic RF features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 TX performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 RX performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Antenna 14
5.1 Antenna type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2 Antenna interference reduction . . . . . . . . . . . . . . . . . . . . . 14
6 Packaging Information and Production Instructions 17
6.1 Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2 Side view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3 Recommended schematic encapsulation . . . . . . . . . . . . . . . . 18
6.4 Recommended PCB Encapsulation-Pin header . . . . . . . . . . . . . . 18
6.5 Recommended PCB Encapsulation-SMT . . . . . . . . . . . . . . . . . 19
6.6 Production instructions . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.7 Recommended oven temperature curve . . . . . . . . . . . . . . . . . 21
6.8 Storage conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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Contents
7 MOQ and packing information 24
8 Appendix: Statement 24
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Contents
WB2L is a low-power embedded Wi-Fi and BLE module that Tuya has developed.
It consists of a highly integrated RF chip (BK7231T) and several peripheral com-
ponents, with an embedded Wi-Fi network protocol stack and robust library func-
tions.
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1 PRODUCT OVERVIEW
1 Product overview
WB2L is embedded with a low-power 32-bit microcontroller unit (MCU), 2 MB flash
memory, 256 KB static random-access memory (SRAM), and extensive peripher-
als.
WB2L 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.
1.1 Features
• Embedded low-power 32-bit CPU, which can also function as an application
processor
• Dominant frequency: 120 MHz
• Working voltage: 3.0 V to 3.6 V
• Peripherals: 5 GPIOs
• Wi-Fi connectivity
–802.11 b/g/n
–Channels 1 to 14 at 2.4 GHz
–Support WEP，WPA/WPA2，WPA/WPA2 PSK (AES) security modes
–Up to +17 dBm output power in 802.11b mode
–EZ and AP net pairing modes for Android and iOS devices
–Onboard PCB antenna with a gain of 1 dBi
–Working temperature: –20°C to +105°C
• BLE connectivity
–Support for BLE 4.2
–Maximum output power of +7 dBm
–Onboard PCB antenna with a gain of 1 dBi
1.2 Applications
• Intelligent building
• Smart household and home appliances
• Smart socket and light
• Industrial wireless control
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2 MODULE INTERFACES
• Baby monitor
• Network camera
• Intelligent bus
1.3 Change history
Date Description Version after change
2019-11-07 This is the first release. V1.0.0
2019-11-23 Update antenna gain. V1.0.1
2019-12-04 Update power
consumption of
distribution network.
V1.0.2
2019-12-10 Update Bluetooth
related parameters.
V1.0.3
2 Module interfaces
2.1 Dimensions and footprint
WB2L has one row of pins with a 2±0.1 mm pin spacing.
The WB2L dimensions (Lx Wx H) are 17.3±0.35 mm x 15±0.35 mm x 2.8±0.15 mm.
The following figure shows the WB2L front and rear views.
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2 MODULE INTERFACES
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2 MODULE INTERFACES
2.2 Interface pin denition
Pin No. Symbol I/O type Function
1 PWM2 I/O Hardware PWM
pin，which is
connected to the
P8/BT_ACTIVE/PWM2
（Pin24）
2 PWM1 I/O Hardware PWM
pin，which is
connected to the
P7/WIFI_ACTIVE/PWM1
（Pin23）
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2 MODULE INTERFACES
Pin No. Symbol I/O type Function
3 PWM0 I/O Hardware PWM
pin，which is
connected to the
P6/CLK13M/PWM0
（Pin22）
4 PWM5 I/O Hardware PWM
pin, which is
connected to the
P26/IRDA/PWM5
（Pin15）
5 PWM4 I/O Hardware PWM
pin，which is
connected to the
P24/LPO_CLK/PWM4
（Pin16）
6 GND P Ground pin
7 3V3 P Power supply pin
(3.3 V)
2.3 Test pin denition
Pin No. Symbol I/O type Function
- GND P Ground pin
- RST I Reset pin, Default
high level, pull
down effective
- U1_TXD I/O UART1_TX, User
serial port
- U1_RXD I/O UART1_RX, User
serial port
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2 MODULE INTERFACES
Pin No. Symbol I/O type Function
- U2_TXD I/O UART2_TX, LOG
serial port
- U2_RXD I/O UART2_RX, LOG
serial port
- F_SCK I/O Clock pin when
data is
downloaded from
the flash memory,
which is
connected to the
P20 pin on the
internal IC
- F_CSN I/O Command
enabling pin
when data is
downloaded from
the flash memory,
which is
connected to the
P21 pin on the
internal IC
- F_SI I/O Data input pin
when data is
downloaded from
the flash memory,
which is
connected to the
P22 pin on the
internal IC
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