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WBR3D Datasheet

Product

Manual

Tuya WBR3D Wi-Fi Module

Version: 1.0

Date: 2019-08-23

No.: 0000000001

Global Intelligent Platform

1. Product Overview

WBR3D is a low-power embedded Wi-Fi and Bluetooth module that Tuya has developed.

It consists of a highly integrated RF chip (RTL8720DN) and several peripheral

components, with an embedded Wi-Fi network protocol stack, Bluetooth network protocol,

and robust library functions. WBR3D is embedded with a low-power 32-bit CPU, 512 KB

static random-access memory (SRAM), and 4 MB flash memory, and has extensive

peripherals.

WBR3D 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: up to 200 MHz



Working voltage: 3.0 V to 3.6 V



Peripherals: eight GPIOs, one universal asynchronous receiver/transmitter (UART),

and one analog-to-digital converter (ADC)



Wi-Fi connectivity



802.11a/b/g/n 1T1R, 2.4 GHz and 5 GHz capable



Channels 1 to 14 at 2.4 GHz and channels 36 to 177 at 5 GHz



WPA and WPA2 security modes



Up to +19 dBm output power in 802.11b mode and up to +16 dBm in 802.11a

mode



STA, AP, and STA+AP working modes

Summary of content (23 pages)

PAGE 1
Global Intelligent Platform WBR3D Datasheet Tuya WBR3D Wi-Fi Module Product Manual Version: 1.0 Date: 2019-08-23 No.: 0000000001 1. Product Overview WBR3D is a low-power embedded Wi-Fi and Bluetooth module that Tuya has developed. It consists of a highly integrated RF chip (RTL8720DN) and several peripheral components, with an embedded Wi-Fi network protocol stack, Bluetooth network protocol, and robust library functions.
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WBR3D Datasheet  Smart and AP network configuration modes for Android and iOS devices  Onboard PCB antenna with 2 dBi at 2.4 GHz and 2.6 dBi at 5 GHz  Working temperature: –20°C to +85°C 1.
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WBR3D Datasheet Change History No. 1 Date 2019-08-30 Change Description This is the first release. 3 Version After Change 1.0.
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WBR3D Datasheet Contents 1. Product Overview........................................................................................................................ 1 1.1 Features.............................................................................................................................. 1 1.2 Applications........................................................................................................................ 2 2. WBR3D Label..................................................
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WBR3D Datasheet 8 Reference Circuit........................................................................................................................ 22 8.1 Circuit Schematic Diagram............................................................................................22 Appendix: Statement.................................................................................................................... 24 Tables Table 3-1 WBR3D interface pins...................................................
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WBR3D Datasheet 2.
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WBR3D Datasheet 3. Module Interfaces 3.1 Dimensions and Footprint WBR3D has two rows of pins with a 2 mm pin spacing. The WBRD3 dimensions (H x W x D) are 3.5 mm x 16 mm x 24 mm. Figure 3-1 shows the front and rear views. Figure 3-1 WBR3D front and rear views Note: The common appearance tolerance is ±0.3 mm. The tolerance of positions that involve plug-in assembly is ±0.1 mm. The thickness tolerance of a 1 mm thick PCB is ±0.1 mm.
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WBR3D Datasheet 3.2 Interface Pin Definition Table 3-1 WBR3D interface pins Pin No. Symbol I/O Type Function 1 RST I/O Hardware reset pin (The module has an internal pull-up resistor, and the reset pin is active at a low level.) 2 ADC AI 10-bit precision SAR ADC (See the following Note 2.) 3 EN Input Module enabling pin, which is connected to 3.
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WBR3D Datasheet Pin No. Symbol I/O Type Function 11 GPIO2 Output UART0_TXD (used to display the module internal information) 12 GPIO0 I/O GPIO_0 (used during module power-on and initialization; use it with caution) 13 GPIO4 I/O GPIO_04 14 GPIO5 I/O GPIO_05 15 RXD0 I/O UART0_RXD (See the following Note 3.) 16 TXD0 Output UART0_TXD (See the following Note 3.) Note: 1. P indicates power supply pins, I/O indicates input/output pins, and AI indicates analog input pins.
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WBR3D Datasheet 4. Electrical Parameters 4.1 Absolute Electrical Parameters Table 4-1 Absolute electrical parameters Parameter Description Minimum Value Maximum Value Unit Ts Storage temperature –20 85 °C VCC Power supply voltage –0.3 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 4.
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WBR3D Datasheet Parameter Description Minimum Value Typical Value Maximum Value Unit 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 4.3 RF Current Table 4-3 Current during constant transmission and receiving Working Status TX at 2.4 GHz TX at 5 GHz Parameter Mode Rate TX Power/Receiving Typical Value Unit 802.11b 11 Mbit/s +18 dBm 250 mA 802.11g 54 Mbit/s +17 dBm 180 mA 802.11n HT20 MCS7 +16 dBm 170 mA 802.
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WBR3D Datasheet Working Mode Working Status (Ta = 25°C) Average Value Maximum Value Unit Connected The module is connected to the network, and the Wi-Fi indicator is steady on. mA Disconnected The module is disconnected from the network, and the Wi-Fi indicator is steady off. mA 5. RF Features 5.1 Basic RF Features Table 5-1 Basic RF features Parameter Description Frequency band 2.412 GHz to 2.484 GHz; 5.18 GHz to 5.825 GHz Wi-Fi standard IEEE 802.
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WBR3D Datasheet Parameter Minimum Value Typical Value Maximum Value Unit Average RF output power, 802.11g OFDM mode 54 Mbit/s N/A 16 N/A dBm Average RF output power, 802.11n HT20 mode MCS7 N/A 15 N/A dBm Average RF output power, 802.11n HT40 mode MCS7 N/A 14 N/A dBm –10 N/A +10 ppm Frequency error EVM under 802.11b CCK, 11 Mbit/s, 17.5 dBm EVM under 802.11g OFDM, 54 Mbit/s, 15.0 dBm EVM under 802.11n OFDM, MCS7, 14.0 dBm N/A N/A N/A –16.5 –33.1 –32.
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WBR3D Datasheet 5.3 RX Performance Table 5-4 RX sensitivity Parameter Minimum Value Typical Value Maximum Value Unit PER < 8%, 802.11b CCK mode 11 Mbit/s N/A –91 N/A dBm PER < 10%, 802.11a/g OFDM mode 54 Mbit/s N/A –75 N/A dBm PER < 10%, 802.11n OFDM mode HT20 MCS7 N/A –72 N/A dBm 6. Antenna Information 6.1 Antenna Type WBR3D uses an onboard PCB antenna. 6.
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WBR3D Datasheet Figure 6-1 Antenna placement For details about the onboard PCB antenna area on WBR3D, see Figure 7-1. 6.3 Antenna Connector Specifications WBR3D does not use an antenna connector.
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WBR3D Datasheet 7. Packaging Information and Production Instructions 7.
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WBR3D Datasheet Figure 7-2 Side view The default dimensional tolerance is ±0.3 mm. If a customer has other requirements, clearly specify them in the datasheet after communication. 7.
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WBR3D Datasheet Figure 7-4 PCB encapsulation diagram of WBR3D 7.3 Production Instructions 1. Use an SMT placement machine to mount components to the stamp hole module that Tuya produces within 24 hours after the module is unpacked and the firmware is burned. If not, vacuum pack the module again. Bake the module before mounting components to the module. (1) SMT placement equipment i. Reflow soldering machine ii. Automated optical inspection (AOI) equipment iii.
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WBR3D Datasheet (2) Baking equipment i. Cabinet oven ii. Anti-static heat-resistant trays iii. Anti-static heat-resistant gloves 2. Storage conditions for a delivered module are as follows: (1) The moisture-proof bag is placed in an environment where the temperature is below 30°C and the relative humidity is lower than 70%. (2) The shelf life of a dry-packaged product is six months from the date when the product is packaged and sealed. (3) The package contains a humidity indicator card (HIC).
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WBR3D Datasheet (5) 5. 6. 7. Rebaking condition: The module is not soldered within 12 hours afterbaking. Do not use SMT to process modules that have unpacked for over three months. 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.
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WBR3D Datasheet 7.
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WBR3D 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.
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WBR3D Datasheet Declaration of Conformity European notice Hereby, Hangzhou Tuya Information Technology Co., Ltd. declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU. A copy of the Declaration of conformity can be found at https://www.tuya.com. The device is restricted to indoor use only when operating in the 5150 to 5350 MHz frequency range.