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Global Intelligent Platform
Product
Manual
Version: 1.0.0
1 Product Overview
WB2S is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a
highly integrated RF chip (BK7231D) and several peripheral components, with an
embedded Wi-Fi network protocol stack and robust library functions. WB2S also
contains a low-power Arm Cortex-M4 microcontroller unit (MCU), 1T1R WLAN module,
256 KB static random-access memory (SRAM), 2 MB flash memory, and extensive
peripherals.
WB2S 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, one universal asynchronous receiver/transmitter (UART),
and one analog-to-digital converter (ADC)
Wi-Fi connectivity
802.11b/g/n20/n40
Channels 1 to 14 at 2.4 GHz
WPA and WPA2 security modes
Up to +16 dBm output power in 802.11b mode
EZ net pairing mode for Android and iOS devices
Onboard PCB antenna
Tuya WB2S Wi-Fi Module
Date: 2019-11-23
1
WB2S Datasheet
No.: 0000000001
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Table of Contents
Related Manuals for TUYA WB2S
Summary of Contents for TUYA WB2S
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Page 1: Product Overview
Date: 2019-11-23 1 Product Overview WB2S is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a highly integrated RF chip (BK7231D) and several peripheral components, with an embedded Wi-Fi network protocol stack and robust library functions. WB2S also... -
Page 2: Application Scenarios
WB2S Datasheet Certified by CE and FCC Working temperature: –20°C to +85°C BT Support Bluetooth (V4.0) Maximum output power + 7dBm EIRP Onboard PCB antenna with a gain of -1 dBi 1.2 Application Scenarios ... -
Page 3: Table Of Contents
3.4 RX Current Consumption ..................9 3.5 Working Current ..................... 9 4 RF Features ........................10 4.1 Basic RF Features ....................10 4.2 WB2S TX Power ....................11 4.3 WB2S RX Sensitivity .................... 11 5 Antenna Information ......................12 5.1 Antenna Type ......................12 5.2 Antenna Interference Reduction ................ - Page 4 WB2S Datasheet 7. Reference Circuit ......................18 7.1 Schematic Diagram ....................18 8 MOQ and Packing Information ..................19...
- Page 5 Figure 6-1 WB2S mechanical dimensions ................ 13 Figure 6-2 WB2S pins ......................14 Figure 6-3 Top and bottom views of the PCB to which WB2S applies ......14 Figure 6-4 HIC for WB2S ....................15 Figure 6-5 Oven temperature curve .................. 16 Figure 7-1 WB2S schematic diagram ................
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Page 6: Module Interfaces
2.1 Dimensions and Footprint WB2S has two rows of pins with a 2 mm pin spacing. The WB2S dimensions (H x W x D) are 3.3 mm x 15 mm x 18 mm. Figure 2-1 shows the WB2S front and rear views. -
Page 7: Electrical Parameters
WB2S Datasheet Pin No. Symbol I/O Type Function UART1_RXD, which is used as a user-side serial interface pin and is connected to the P10 pin on the internal IC Common GPIO, which is connected to the P6 pin PWM0 on the internal IC... -
Page 8: Working Conditions
WB2S Datasheet Parameter Description Minimum Maximum Unit Value Value Static electricity voltage Tamb = 25°C (human body model) Static electricity voltage Tamb = 25°C (machine model) 3.2 Working Conditions Table 3-2 Normal working conditions Parameter Description Minimum Typical Maximum Unit... -
Page 9: Tx Current Consumption
3.4 RX Current Consumption Table 3-4 Current consumption during constant receiving Symbol Mode Typical Value Unit CPU sleep CPU active 3.5 Working Current Table 3-5 WB2S working current Working Working Status (Ta = 25°C) Average Maximum Unit Mode Value Value The module is in EZ mode, and the Wi-Fi indicator blinks quickly. -
Page 10: Rf Features
WB2S Datasheet Working Working Status (Ta = 25°C) Average Maximum Unit Mode Value Value the Wi-Fi indicator blinks slowly. The module is connected to the network, and the Wi-Fi indicator is Connected steady on. The module is disconnected from Disconnected the network, and the Wi-Fi indicator is steady off. -
Page 11: Wb2S Tx Power
WB2S Datasheet 4.2 WB2S TX Power Table 4-2 Power during constant transmission Parameter Minimum Typical Maximum Unit Value Value Value Average RF output power, 802.11b CCK 1 Mbit/s mode Average RF output power, 802.11g 54 Mbit/s OFDM mode Average RF output power, 802.11n... -
Page 12: Antenna Information
OFDM mode 5 Antenna Information 5.1 Antenna Type WB2S uses an onboard PCB antenna. 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 be at least 15 mm away from other metal parts. -
Page 13: Antenna Connector Specifications
WB2S Datasheet For details about the onboard PCB antenna area on WB2S, see Figure 6-1. Note: The default dimensional tolerance is ±0.35 mm. If a customer has other requirements, clearly specify them in the datasheet after communication. 5.3 Antenna Connector Specifications WB2S does not use an antenna connector. -
Page 14: Recommended Pcb Layout
6.2 Recommended PCB Layout Figure 6-2 WB2S pins Figure 6-3 Top and bottom views of the PCB to which WB2S applies 6.3 Production Instructions 1. Use an SMT placement machine to mount the stamp hole module that Tuya produces onto the PCB within 24 hours after the module is unpacked and the firmware is burned. -
Page 15: Figure 6-4 Hic For Wb2S
(2) The shelf life of a dry-packaged product is 12 months from the date when the product is packaged and sealed. (3) The package contains a humidity indicator card (HIC). Figure 6-4 HIC for WB2S 3. Bake a module based on HIC status as follows when you unpack the module package: (1) If the 30%, 40%, and 50% circles are blue, bake the module for 2 consecutive hours. -
Page 16: Recommended Oven Temperature Curve
Electroless nickel immersion gold (ENIG) is used for the PCBs. If the solder pads are exposed to the air for over three months, they will be oxidized severely and dry joints or solder skips may occur. Tuya is not liable for such problems and consequences. -
Page 17: Storage Conditions
WB2S Datasheet 6.5 Storage Conditions... -
Page 18: Figure 7-1 Wb2S Schematic Diagram
WB2S Datasheet 7. Reference Circuit 7.1 Schematic Diagram Figure 7-1 WB2S schematic diagram... -
Page 19: Table 8-1 Packing Information
WB2S Datasheet 8 MOQ and Packing Information Table 8-1 Packing information MOQ and packing information Number of Number of Reel Product Packing Modules in Each Packs in Each Model Method Reel Pack Carrier tape and WB2S 4000 1000 reel packing... - Page 20 WB2S Datasheet Appendix: Statement Federal Communications Commission (FCC) Declaration of Conformity FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device complies with Part 15 of the FCC Rules.Operation is subject to the following...
- Page 21 This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body. This device have got a FCC ID：2ANDL-WB2S.The final end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID:2ANDL-WB2S”...
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