TUYA WB2L Manuale utente
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
1
1 Product Overview
WB2L is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a
highly integrated RF chip (BK7231T) and several peripheral components, with an
embedded Wi-Fi network protocol stack and robust library functions. WB2L is embedded
with a low-power Arm Cortex-M4 MCU, 2 MB flash memory, and 256 KB static
random-access memory (SRAM), and has extensive peripherals.
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
Clock rate: 120 MHz
Working voltage: 3.0 V to 3.6 V
Peripherals: five GPIOs
Wi-Fi connectivity
802.11b/g/n
Channels 1 to 14 at 2.4 GHz
WPA and WPA2 security modes
Up to +17.5 dBm output power in 802.11b mode
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 1 dBi
Working temperature: –20°C to +105°C
Tuya WB2L Wi-Fi Module
Version: 1.0.0 Date: 2019-11-07
No.: 0000000004
Product
Manual
Global Intelligent Platform
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
2
BT
Support Bluetooth (V4.0)
Maximum output power + 7dBm EIRP
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
Baby monitor
Network camera
Intelligent bus
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
3
Change History
No.
Date Change Description Version After Change
1 2019-11-07 This is the first release. 1.0.0
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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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................................................... 11
6.1 Mechanical Dimensions ............................................................................... 11
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 ................................................................................... 18
8 Appendix: Statement ....................................................................... 错误!未定义书签。
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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Figures
Figure 2-1 WB2L front and rear views.......................................................................... 6
Figure 6-1 WB2L mechanical dimensions .................................................................. 12
Figure 6-2 Side view ................................................................................................... 12
Figure 6-3 WB2L pins ................................................................................................. 13
Figure 6-4 WB2L pin header dimensions ................................................................... 13
Figure 6-5 Layout of the PCB to which WB2L applies ............................................... 14
Figure 6-6 HIC for WB2L ............................................................................................ 15
Figure 6-7 Oven temperature curve ........................................................................... 16
Tables
Table 2-1 WB2L interface pins ..................................................................................... 6
Table 2-2 WB2L 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 WB2L working current .................................................................................. 9
Table 4-1 Basic RF features ....................................................................................... 10
Table 4-2 Performance during constant transmission ................................................ 10
Table 4-3 RX sensitivity .............................................................................................. 11
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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2 Module Interfaces
2.1 Dimensions and Footprint
WB2L has two rows of pins with a 2±0.1 mm pin spacing.
The WB2L 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 WB2L front and rear views.
Figure 2-1 WB2L front and rear views
2.2 Interface Pin Definition
Table 2-1 WB2L interface pins
Pin No.
Symbol
I/O Type
Function
1 PWM2 I/O Hardware PWM pin, which is connected to
BT_ACTIVE/PWM2 (pin 24) on the internal IC
2 PWM1 I/O Hardware PWM pin, which is connected to
WIFI_ACTIVE/PWM1 (pin 23) on the internal IC
3 PWM0 I/O Hardware PWM pin, which is connected to CLK13M/PWM0
(pin 22) on the internal IC
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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Pin No.
Symbol
I/O Type
Function
4 PWM5 I/O Hardware PWM pin, which is connected to IRDA/PWM5 (pin
15) on the internal IC
5 PWM4 I/O Hardware PWM pin, which is connected to LPO_CLK/PWM4
(pin 16) on the internal IC
6 GND P Power supply reference ground pin
7 3V3 P Power supply pin (3.3 V)
Note: P indicates power supply pins, and I/O indicates input/output pins.
2.3 Test Pin Definition
Table 2-2 WB2L test pins
Pin No. Symbol I/O Type Function
N/A GND P Power supply reference ground pin
N/A RST Input Hardware reset pin (It is at a high level by
default and is active at a low level.)
N/A U1_TXD I/O UART1_TX, which is used as a user-side
serial interface pin
N/A U1_RXD I/O UART2_RX, which is used as a user-side
serial interface pin
N/A U2_TXD I/O Log TX pin
N/A U2_RXD I/O Log RX pin
N/A F_SCK I/O Clock pin when data is downloaded from
the flash memory
N/A F_CSN I/O Command enabling pin when data is
downloaded from the flash memory
N/A F_SI I/O Data input pin when data is downloaded
from the flash memory
N/A F_SO I/O Data output pin when data is downloaded
from the flash memory
Note: Test pins are not recommended.
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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3 Electrical Parameters
3.1 Absolute Electrical Parameters
Table 3-1 Absolute electrical parameters
Parameter Description Minimum
Value
Maximum
Value
Unit
Ts Storage
temperature
–40 105 °C
VBAT Power supply
voltage
3.0 3.6 V
Static electricity voltage
(human body model)
Tamb = 25°C N/A 2 kV
Static electricity voltage
(machine model)
Tamb = 25°C N/A 0.5 kV
3.2 Electrical Conditions
Table 3-2 Normal electrical conditions
Parameter
Description Minimum
Value
Typical
Value
Maximum
Value
Unit
Ta Working temperature –40 N/A 105 °C
VBAT Power supply voltage 3.0 3.3 3.6 V
VIL I/O low-level input –0.3 N/A VCC x 0.25
V
VIH I/O high-level input VCC x 0.75
N/A VCC V
VOL I/O low-level output N/A N/A VCC x 0.1 V
VOH I/O high-level output VCC x 0.8 N/A VCC V
Imax I/O drive current N/A N/A 12 mA
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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3.3 RF Current Consumption
Table 3-3 Current consumption during constant transmission and receiving
Working
Status
Parameter
Typical
Value
Maximum
Value Unit
Mode Rate TX Power/
Receiving
TX
802.11b 11 Mbit/s +17 dBm 295 354 mA
802.11g 54 Mbit/s +13.5 dBm 266 300 mA
802.11n MCS7 +13 dBm 260 290 mA
RX
802.11b 11 Mbit/s Constant
receiving
98 100 mA
802.11g 54 Mbit/s Constant
receiving
98 100 mA
802.11n MCS7 Constant
receiving
98 100 mA
3.4 Working Current
Table 3-4 WB2L working current
Working
Mode
Working Status (Ta = 25°C) Average
Value
Maximum
Value
Unit
EZ The module is in EZ mode, and the Wi-Fi
indicator blinks quickly.
98 100 mA
AP The module is in AP mode, and the Wi-Fi
indicator blinks slowly.
53 125 mA
Connected The module is connected to the network,
and the Wi-Fi indicator is steady on.
60 170 mA
Disconnected
The module is disconnected from the
network, and the Wi-Fi indicator is steady
off.
40 88 mA
WB2L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. V1.0.0
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4 RF Features
4.1 Basic RF Features
Table 4-1 Basic RF features
Parameter Description
Frequency band BT:2.400 GHz to 2.4835 GHz
WIFI:2.412 GHz to 2.484 GHz
Wi-Fi standard IEEE 802.11b/g/n (channels 1 to 14，Ch1-11 for
US/CA,Ch1-13 for EU/CN)
BT standard BT 4.0
Data transmission rate
802.11b: 1, 2, 5.5, or 11 (Mbit/s)
802.11g: 6, 9, 12, 18, 24, 36, 48, or 54 (Mbit/s)
802.11n: HT20 MCS0 to MCS7
802.11n: HT40 MCS0 to MCS7
Antenna type Onboard PCB antenna with a gain of 1 dBi
4.2 TX Performance
Table 4-2 Performance during constant transmission
Parameter Minimum
Value
Typical
Value
Maximum
Value
Unit
Average RF output power,
802.11b CCK mode
11 Mbit/s N/A 17 N/A dBm
Average RF output power,
802.11g OFDM mode
54 Mbit/s N/A 13.5 N/A dBm
Average RF output power,
802.11n OFDM mode
MCS7 N/A 12 N/A dBm
Frequency error –10 N/A +10 ppm
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