WBR3L 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 1 1 2 Change History 3 3 Module Interfaces 3.1 Dimensions and Footprint . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Pin Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 4 4 Electrical Parameters 4.1 Absolute Electrical Parameters 4.2 Working Conditions . . . . . . 4.
Contents 8.6 Storage Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 PRODUCT OVERVIEW 1 Product Overview WBR3L is a low-power embedded WiFi+BLE module that Tuya has developed. It consists of a highly integrated wireless RF chip (RTL8720CF), with an embedded WiFi network protocol stack and varied library functions. With the maximum CPU clock rate of 100MHz, WBR3L also contains a low-power KM4 microcontroller unit (MCU), a WLAN MAC, a 1T1R WLAN module, 256-KB static random-access memory (SRAM), 2-MB flash memory, and extensive peripherals.
1 • Baby monitor • Network camera • Intelligent bus 2 / 25 PRODUCT OVERVIEW
3 MODULE INTERFACES 2 Change History Serial Number Update Date Updated Content 1 3/21/2020 This is the first release. Version after Update V1.0.0 3 Module Interfaces 3.1 Dimensions and Footprint WBR3L has two rows of pins with a 2 mm pin spacing. Each row has 8 pins. The WBR3L dimensions are 16±0.35 mm (W)×24±0.35 mm (L) ×2.9±0.15 mm (H).
3 MODULE INTERFACES 3.
3 MODULE INTERFACES Pin Number Symbol I/O Type Function 10 A_12 I/O GPIOA_12, hardware PWM, IC Pin 26 11 A_16 I/O GPIOA_16, UART_Log_TXD, which is used for displaying the module internal information and can be configured as a common GPIO 12 A_17 I/O GPIOA_17, hardware PWM, IC Pin 38 13 A_18 I/O GPIOA_18, hardware PWM, IC Pin 39 14 A_19 I/O GPIOA_19, hardware PWM, IC Pin 40 15 RXD I/O GPIOA_13, UART0_RXD, which is used as a user-side serial interface pin 16 TXD I/O GPIOA_14, U
4 ELECTRICAL PARAMETERS 4 Electrical Parameters 4.1 Absolute Electrical Parameters Minimum Value Maximum Value Unit Parameter Description Ts Storage temperature -40 125 ℃ VDD Power supply voltage -0.3 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 I/O low-level input - - 0.8 V VIH I/O high-level input 2.0 - - V VOL I/O low-level output - - 0.4 V VOH I/O high-level output 2.4 - - V Imax I/O drive current - - 16 mA Cpad Input pin capacitance - 2 - pF 4.3 RF Power Consumption 1.
4 ELECTRICAL PARAMETERS Peak Value (Typical Value) Unit Symbol Mode Average Value IRF 11B 11M 63 65 mA IRF 11G 54M 65 67 mA IRF 11N HT20 MCS7 65 67 mA Average Value Peak Value (Typical Value) Unit 4.
5 Working Mode Disconnected status Working Status (Ta = 25°C) The module is offline and the WiFi indicator is dark RF PARAMETERS Average Value Peak Value (Typical Value) Unit 66 309 mA 5 RF Parameters 5.1 Basic RF Features Parameter Description Frequency range 2.400 to 2.4835 GHz WiFi standard IEEE 802.11b/g/n (channels 1 to 14) BLE standard Bluetooth 4.
5 Typical Value Maximum Value Unit Average RF output power, 802.11b CCK Mode, 1 Mbit/s 17.5 - dBm Average RF output power, 802.11g OFDM mode, 54 Mbit/s 14.5 - dBm Average RF output power, 802.11n OFDM mode, MCS7 13.5 - dBm Average RF output power, BLE 4.2, 1 Mbit/s 6.5 - dBm Frequency error - 20 ppm EVM@802.11b CCK 11Mbps Mode 17.5dBm - -10 dB EVM@802.11g OFDM 54Mbps Mode 14.
5 Typical Value Maximum Value Unit - -30 dB Minimum Value Typical Value Maximum Value Unit - -91 - dBm PER<10%, RX sensitivity, 802.11g OFDM Mode 54M -75 - dBm PER<10%, RX sensitivity, 802.11n OFDM Mode MCS7 -72 - dBm PER<10%, RX sensitivity, BLE 4.2 1M -93 - dBm Parameter Minimum Value RF PARAMETERS EVM@802.11n OFDM MCS7 Mode 13.5dBm 5.3 RX Performance Parameter PER<8%, RX sensitivity, 802.
6 ANTENNA INFORMATION 6 Antenna Information 6.1 Antenna Type WBR3L uses only an onboard PCB antenna with a gain of 1.82 dBi. 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.
7 POWER-ON SEQUENCE AND RESETTING 7 Power-on Sequence and Resetting 7.1 Power-on Sequence The RTL8720CF chip has requirements on the power-on sequence. mended that the voltage rise from 0 to 3.3V within 40mS. Minimum Value Typical Value It is recom- Maximum Value Unit Symbol Parameter TPRDY 3.3V ready time 0.6 20 mS CHIP_EN CHIP_EN ready time 0.6 20 mS 7.2 Resetting When designing a plate of a module, you should set a reset IC at the foot of CHIP_EN in advance.
7 POWER-ON SEQUENCE AND RESETTING 14 / 25
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 8 Packaging Information and Production Instructions 8.1 Mechanical Dimensions The mechanical dimensions of PCB of WBR3L are 16±0.35 mm (W)×24±0.35 mm (L) ×0.8±0.1 mm (H). The following figure shows mechanical dimensions of WBR3L.
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS Note: The default dimensional tolerance is ±0.35 mm. If you have specific requirements on dimensions, make them clear in the datasheet after communication. 8.2 Recommended PCB Layout The following figure is a schematic diagram of WBR3L which shows how pins correspond to each other.
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS WBR3L PCB Layout is shown as belows: 17 / 25
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 8.3 Pin Header Specifications WBR3L has two models: WBR3L with pin headers and WBR3L without pin headers. Which one is used depends on actual situations.
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 8.4 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 • Reflow soldering machine • Automated optical inspection (AOI) equipment • Nozzle with a 6 mm to 8 mm diameter B.
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 2. Storage conditions for a delivered module are as follows: • The moisture-proof bag is placed in an environment where the temperature is below 30°C and the relative humidity is lower than 70%. • The shelf life of a dry-packaged product is 6 months from the date when the product is packaged and sealed. • There is a humidity indicator card in the moisture-proof bag as belows: 3.
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS the oven temperature and attaching and placing components. Draw 5 to 10 modules from subsequent batches each hour for visual inspection and AOI. 8.5 Recommended Oven Temperature Curve Perform SMT based on the following reflow oven temperature curve. The highest temperature is 245°C. The reflow temperature curve is shown as belows: Refer to IPC/JEDEC standard; Peak Temperature: \<245℃; The number of Times: ≤ 2 times 21 / 25
8 PACKAGING INFORMATION AND PRODUCTION INSTRUCTIONS 8.
10 APPENDIX-STATEMENT 9 MOQ and Packaging Information Product Number MOQ (pcs) Shipping packaging method WBR3L 3600 Tape reel The number of modules per reel (pcs) The number of reels per carton (reel) 900 4 10 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.
10 APPENDIX-STATEMENT 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. Additional testing and equipment authorization may be required to operating simultaneously with other radio. The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination.
10 APPENDIX-STATEMENT 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). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.
