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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 

Содержание WB2L

Страница 1: ...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 pr...

Страница 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 Indu...

Страница 3: ...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...

Страница 4: ...lectrical 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 Typ...

Страница 5: ...he 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 paramete...

Страница 6: ...igure 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 pi...

Страница 7: ...ype 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...

Страница 8: ...n 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 Typic...

Страница 9: ...stant 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...

Страница 10: ...ssion 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 Perform...

Страница 11: ...or external antenna with an I PEX connector 5 2 Antenna Interference Reduction To ensure optimal Wi Fi performance when the Wi Fi module uses an onboard PCB antenna it is recommended that the antenna...

Страница 12: ...WB2L Datasheet Hangzhou Tuya Information Technology Co Ltd V1 0 0 12 Figure 6 1 WB2L mechanical dimensions Figure 6 2 Side view...

Страница 13: ...Ltd V1 0 0 13 6 2 Recommended PCB Layout Figure 6 3 WB2L pins WB2L can be mounted onto a PCB by using an SMT placement machine or connected to the PCB through a pin header Figure 6 4 shows the pin he...

Страница 14: ...ot vacuum pack the module again Bake the module before mounting it onto the PCB 1 SMT placement equipment i Reflow soldering machine ii Automated optical inspection AOI equipment iii Nozzle with a 6 m...

Страница 15: ...Baking temperature 125 5 C 2 Alarm temperature 130 C 3 SMT placement ready temperature after natural cooling 36 C 4 Number of drying times 1 5 Rebaking condition The module is not soldered within 12...

Страница 16: ...nology Co Ltd V1 0 0 16 batches for visual inspection and AOI 6 4 Recommended Oven Temperature Curve 1 Perform SMT placement based on the following reflow oven temperature curve The highest temperatur...

Страница 17: ...WB2L Datasheet Hangzhou Tuya Information Technology Co Ltd V1 0 0 17 6 5 Storage Conditions...

Страница 18: ...on Technology Co Ltd V1 0 0 18 7 MOQ and Packing Information MOQ and Packing Information Product Model MOQ Packing Method Number of Modules in Each Reel Pack Number of Reel Packs in Each Box WB2L 4000...

Страница 19: ...not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encou...

Страница 20: ...antenna must be installed such that 20cm is maintained between the antenna and users and 2 The transmitter module may not be co located with any other transmitter or antenna As long as 2 conditions a...

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