WBR3T Module Datasheet Device Development > Cloud Module > WiFi&BT Dual Mode Module Version: 20200812 Online Version
Contents Contents 1 Product Overview 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Change History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2 2 2 Information about Labels of WBR3T 3 3 Module Interfaces 3.1 Dimensions and Footprint . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Pin Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.
Contents 7.6 Production Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.7 Recommended Oven Temperature Curve . . . . . . . . . . . . . . . . 24 7.8 Storage conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 PRODUCT OVERVIEW 1 Product Overview WBR3T is a low-power embedded WiFi+BLE module that Tuya has developed. It consists of a highly integrated wireless RF chip (RTL8720DN), a few peripherals, an embedded WiFi network protocol stack, the BT network protocol, and varied library functions. WBR3T has an embedded low-power 32-bit CPU, 512-KB static randomaccess memory (SRAM), 4-MB flash memory, and rich peripherals.
1 PRODUCT OVERVIEW – Channels 1 to 14 at 2.4 Ghz; channels 36 to 177 at 5 Ghz – Support WPA and WPA 2 security modes – Up to +17 dBm output power in 802.11b mode; Up to +15 dBm output power in 802.11a mode – Support STA/AP/STA+AP working mode – Support SmartConfig and AP network configuration manners for Android and iOS devices – Onboard PCB antenna with a gain of 0 dBi at 2.4G; onboard PCB antenna with a gain of 0.7 dBi at 5.0 G – Working temperature: -20 to 105℃ • BLE connectivity – – – – Support BLE (V5.
2 INFORMATION ABOUT LABELS OF WBR3T 2 Information about Labels of WBR3T • • • • • P/N: Module Number Model: Product material code: WBR3T S/N: Production serial number CE: CE certification logo RoHS: RoHS certification logo 3 / 28
3 MODULE INTERFACES 3 Module Interfaces 3.1 Dimensions and Footprint WBR3T has two rows of pins with a 2±0.1 mm pin spacing. The WBR3T dimensions are 16 mm (W)×24 mm (L) ×3 mm (H).
3 MODULE INTERFACES Note: The general shape tolerance is 0.3 mm, the position tolerance related to the plug-in assembly is reduced to 0.1 mm, and the tolerance of the 1-mm-thick plate is 0.1 mm.
3 MODULE INTERFACES 3.2 Pin Definition Pin Number Symbol I/O Type Function 1 RST I/O Reset pin 2 ADC AI ADC(1) , which corresponds to PB 3 of IC 3 EN I Enabling pin, which needs to be connected to the voltage of 3.
3 MODULE INTERFACES Pin Number Symbol I/O Type Function 4 PA15 I/O Common IO pin, which corresponds to PA 15 of IC 5 PA13 P Need to support hardware PWM, which corresponds to PA 13 of IC 6 PA12 I/O Need to support hardware PWM, which corresponds to PA 12 of IC 7 PA26 I/O Need to support hardware PWM, which corresponds to PA 26 of IC 8 VCC P Power supply pin (3.
3 MODULE INTERFACES Pin Number Symbol I/O Type Function 11 LOG_TX O UART0_TXD (used to display the internal information of the module), which corresponds to UART_TXD of IC 12 PB20 I/O A common IO pin, which corresponds to PB 20 of IC 13 PB21 I/O Need to support hardware PWM and correspond to PB 21 of IC 14 PA28 I/O Need to support hardware PWM and correspond to PA 28 of IC 15 RXD/PB2 I/O UART0_RXD(2) , which corresponds to PB 2 of IC 16 TXD/PB1 I/O UART0_TXD(2) , which correspond
3 MODULE INTERFACES interface. Once not used, it needs to be pulled up. As an ADC input interface, the input voltage range is 0 to 1.0 V. (2): UART0 is a user-side serial interface pin. When a module is enabled, there is information output from the user-side serial interface pin, which can be neglected. 3.3 Definitions on Test points Pin Number Symbol I/O Type Function - TEST I Be used to the production test of the module Note: Test pins are not recommended.
4 ELECTRICAL PARAMETERS 4 Electrical Parameters 4.1 Absolute Electrical Parameters Minimum value Maximum Value Unit Parameter Description Ts Storage temperature -20 105 ℃ VBAT Power supply voltage 3.0 3.6 V Static electricity discharge voltage (human body model) TAMB-25℃ - 2 KV Static electricity discharge voltage (machine model) TAMB-25℃ - 0.5 KV 4.
4 ELECTRICAL PARAMETERS Minimum value Typical Value Maximum Value Unit Parameter Description VIL IO low-level -0.3 input - VCC*0.25 V VIH IO high-level input - VCC V VOL IO low-level output - VCC*0.1 V VOH IO high-level output VCC*0.8 - VCC V Imax IO drive current - - 12 mA VCC*0.75 4.3 TX and RX Power Consumption: 4.3.1 Transmission and Receiving at 2.
4 ELECTRICAL PARAMETERS Transmit Power/Receive Working Status Typical Value Mode Rate Receive 11n-HT20 MCS 7 Constantly 70 receive 80 mA Receive 11n-HT40 MCS 7 Constantly 73 receive 80 mA Unit 4.3.
5 RF PARAMETERS Working Mode Working Status, Ta = 25℃ Average Value Maximum Value (Typical Value) Unit Quick connection network state The module is in the fast network connection state and the WiFi indicator always flashes 57 184 mA Hotspot network configuration state The module is in the hotspot network configuration state and the WiFi indicator flashes slowly 203 392 mA Network connection operation state The module is connected to the network and the WiFi indicator is always on 55 98 mA D
5 RF PARAMETERS Parameter Description Working frequency 2.412 to 2.484 GHz; 5.180 to 5.885 GHz ＢＴ：２．４０００ ｔｏ ２．４８３５ＧＨＺ WiFi standard IEEE 802.11 a/b/g/n (Channels 1 to 14; channels 36 to 177) Data transmission rate 11b: 1, 2, 5.5, 11 (Mbps); 11 a/g: 6, 9, 12, 18, 24, 36, 48, 54 (Mbps); 11n: HT20 MCS 0 to 7; HT40 MCS 0 to 7 Antenna type PCB antenna with a gain of 0 dBi at 2.4 Ｇ ＆ ＢＴ; PCB antenna with a gain of 0.7 dBi at 5 G 5.2 TX Performance 2.
5 RF PARAMETERS Typical Value Maximum Value Unit Average RF output power, 802.11n HT40 Mode MCS7 14 - dBm Frequency error - 10 ppm Typical Value Maximum Value Unit Average RF output power, 802.11a OFDM Mode 54M 15 - dBm Average RF output power, 802.11n HT20 Mode MCS7 14 - dBm Average RF output power, 802.11n HT40 Mode MCS7 13 - dBm Frequency error - 10 ppm Parameter Minimum Value -10 5G-TX Performance Parameter Minimum Value -10 5.
5 RF PARAMETERS Typical Value Maximum Value Unit - -91 - dBm PER<10%, RX sensitivity, 802.11a/g OFDM Mode 54M -75 - dBm PER<10%, RX sensitivity, 802.11n OFDM Mode HT20-MCS7 -72 - dBm Parameter PER<8%, RX sensitivity, 802.
6 ANTENNA INFORMATION 6 Antenna Information 6.1 Antenna Type WB8P uses only an onboard PCB antenna. 6.2 Antenna Interference Reduction To ensure optimal WiFi performance when the WiFi module uses an onboard PCB antenna, it is recommended that the antenna be at least 15 mm away from other metal parts. To ensure the antenna performance, the PCB should not be routed or clad with copper in the antenna area. The main points of the layout: 1.
6 ANTENNA INFORMATION For the antenna area of the PCB of the module, refer to Diagram of Mechanical Dimensions. 6.3 Treatment of GPIO Pins A few pins (PA 12, PA 13, PA 15, PA 25, PA 28, and PA 26) of the module will have instantaneous high-level pulses before the chip fully works, and everything will be normal after the chip works.
6 ANTENNA INFORMATION will drop to about 2.7V after passing through the diode. The red box represents the original drive tube on the customer’s baseboard. A diode D1 and pull-down 1-K resistor need to be added. If a lamp is directly driven, pull down a 10-K resistor on the grid of the positive Mos. If a lamp is not directly driven and a PWM signal will not be sent until the module is officially launched, there is no need to add a pull-down resistor and diode.
7 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 7 Packaging Information and Production Instructions 7.1 Mechanical Dimensions The WBR3T dimensions are 16 mm (W)×24 mm (L) ×2.8 mm (H).
7 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 7.2 Side View Note: The default dimensional tolerance is 0.3 mm. If you have specific requirements on dimensions, make them clear in the datasheet after communication. 7.
7 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 7.4 The Diagram of PCB Packaging-Pin WBR3T can use SMT. 7.
7 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 7.6 Production Instructions 1. Tuya’s stamp hole package module must be mounted by SMT machine within 24 hours after unpacking and programming of firmware. Otherwise, it must be packaged again under vacuum. The module must be baked before mounting. A. SMT equipment a) b) c) d) e) f) Reflow soldering machine Automated optical inspection (AOI) equipment Nozzle with a 6 mm to 8 mm diameter B.
7 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS and they are seriously oxidized after more than 3 months. SMT is very likely to cause pseudo and missing soldering. Tuya is not liable for such problems and consequences. 6. Before SMT, take electrostatic discharge (ESD) protective measures. 7.
7 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 7.
9 APPENDIX-STATEMENT 8 MOQ and Packaging Information Product Number MOQ(pcs) Shipping packaging method WBR3T 4000 Tape reel The number of modules per reel (pcs) The number of reels per carton (reel) 1000 4 9 Appendix-Statement 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.
9 APPENDIX-STATEMENT This equipment complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. Important Note This radio module must not installed to co-locate and operating simultaneously with other radios in host system except in accordance with FCC multi-transmitter product procedures.
9 APPENDIX-STATEMENT 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, 2011/65/EU. A copy of the Declaration of conformity can be found at https://www.tuya.com. This product must not be disposed of as normal household waste, in accordance with EU directive for waste electrical and electronic equipment (WEEE-2012/19/EU).
