WB3L Module Datasheet
Last Updated on：2020-04-28 01:18:52
WB3L is a low-power embedded Wi-Fi and BLE 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. WB3L is embedded with a low-power Arm Cortex-M4 microcontroller unit (MCU), 2 MB flash memory, 256 KB static random-access memory (SRAM), and extensive peripherals. WB3L is an RTOS platform that integrates all function libraries of the Wi-Fi MAC andTCP/IP protocols. You can develop embedded Wi-Fi products as required.
|No.||Date||Change Description||Version After Change|
|1||2019-11-17||This is the first release.||V1.0.0|
WB3L has two rows of pins with a 2±0.1 mm pin spacing.
The WB3L dimensions (H x W x D) are 2.8±0.15 mm x 16±0.35 mm x 24±0.35 mm. Figure shows the WB3L front and rear views.
|Pin No.||Symbol||I/O Type||Function|
|1||RST||I/O||Reset pin, which is disconnected|
|2||ADC||AI||ADC pin, which is connected to the P23 pin on the internal IC|
|3||EN||I||Module enabling pin, which is connected to 3.3 V for normal use|
|4||P14||I/O||Common I/O pin, which is connected to the P14 pin on the internal IC|
|5||PWM5||I/O||Hardware PWM pin, which is connected to the P26 pin on the internal IC|
|6||PWM4||I/O||Hardware PWM pin, which is connected to the P24 pin on the internal IC|
|7||PWM0||I/O||Hardware PWM pin, which is connected to the P6 pin on the internal IC|
|8||VCC||P||Power supply pin (3.3 V)|
|10||PWM3||I/O||Hardware PWM pin, which is connected to the P9 pin on the internal IC|
|11||TXD2||I/O||UART2_TX, which is connected to the P0 pin on the internal IC|
|12||P16||I/O||Common I/O pin, which is connected to the P16 pin on the internal IC|
|13||PWM2||I/O||Hardware PWM pin, which is connected to the P8 pin on the internal IC|
|14||PWM1||I/O||Hardware PWM pin, which is connected to the P7 pin on the internal IC|
|15||RXD1||I/O||Serial interface receiving pin (UART_RX), which is connected to the P10 pin on the internal IC|
|16||TXD1||I/O||Serial interface transmission pin (UART_TX), which is connected to the P11 pin on the internal IC|
Note：P indicates a power supply pin, I/O indicates an input/output pin, and AI indicates an analog input pin.
|Pin No.||Symbol||I/O Type||Function|
|TP6||U2_RXD||I/O||UART2_RX, which is connected to the P1 pin on the internal IC|
|TP2||F_SCK||I/O||Clock pin when data is downloaded from the flash memory, which is connected to the P20 pin on the internal IC|
|TP3||F_CSN||I/O||Command enabling pin when data is downloaded from the flash memory, which is connected to the P21 pin on the internal IC|
|TP5||F_SO||I/O||Data input pin when data is downloaded from the flash memory, which is connected to the P22 pin on the internal IC|
|Parameter||Description||Minimum Value||Maximum Value||Unit|
|VBAT||Power supply voltage||3.0||3.6||V|
|Static electricity voltage (human body model)||TAMB-25℃||-||2||KV|
|Static electricity voltage (machine model)||TAMB-25℃||-||0.5||KV|
|Parameter||Description||Minimum Value||Typical Value||Maximum Value||Unit|
|VBAT||Power supply voltage||3.0||3.3||3.6||V|
|VIL||I/O low-level input||-0.3||-||VCC*0.25||V|
|VIH||I/O high-level input||VCC*0.75||-||VCC||V|
|VOL||I/O low-level output||-||-||VCC*0.1||V|
|VoH||I/O high-level output||VCC*0.8||-||VCC||V|
|Imax||I/O drive current||-||-||12||mA|
|Working Status||Mode||Rate||TX Power/ Receiving||Typical Value||Maximum Value||Unit|
|Working Mode||Working Status (Ta = 25°C)||Average Value||Maximum Value||Unit|
|EZ||The module is in EZ mode, and the Wi-Fi indicator blinks quickly.||95||402||mA|
|AP||The module is in AP mode, and the Wi-Fi indicator blinks slowly.||106||386||mA|
|Connected||The module is connected to the network, and the Wi-Fi indicator is steady on.||55||132||mA|
|Disconnected||The module is disconnected from the network, and the Wi-Fi indicator is steady off.||38||206||mA|
|Wi-Fi standard||IEEE 802.11b/g/n(channels1-14)|
|Data transmission rate||11b:1,2,5.5, 11 (Mbps)； 11g:6,9,12,18,24,36,48,54(Mbps); 11n: HT20 MCS07; HT40 MCS07|
|Antenna type||PCB antenna with a gain of 1.2 dBi|
Performance during constant transmission
|Parameter||Minimum Value||Typical Value||Maximum Value||Unit|
|Average RF output power,802.11b CCK Mode 11M||-||16||-||dBm|
|Average RF output power,802.11g OFDM Mode 54M||-||14||-||dBm|
|Average RF output power,802.11n OFDM Mode MCS7||-||12||-||dBm|
|Parameter||Minimum Value||Typical Value||Maximum Value||Unit|
|PER<8%，RX sensitivity，802.11b DSSS Mode 11M||-||-85||-||dBm|
|PER<10%，RX sensitivity，802.11g OFDM Mode 54M||-||-72||-||dBm|
|PER<10%，RX sensitivity，802.11n OFDM Mode MCS7||-||-68||-||dBm|
WB3L uses an onboard PCB antenna.
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 15mm away from other metal parts. To prevent adverse impact on the antenna radiation performance, avoid copper or traces along the antenna area on the PCB. The following describes three antenna placement solutions: 1.Place the antenna outside the PCB frame. 2.Place the antenna along the PCB frame without copper nearby. 3. Place the antenna in a carved area on the PCB. The preceding solutions ensure that there are no substrate media above or below the antenna and that copper is at a certain distance away from the antenna to maximize the antenna radiation performance.
The PCB dimensions (W x L x H) are 16±0.35mm (W)×24±0.35mm (L) ×2.8±0.15mm (H)。
WB3L can be mounted onto a PCB by using an SMT placement machine or through-hole mounted onto the PCB through a pin header.
Storage conditions for a delivered module are as follows:： A.The moisture-proof bag is placed in an environment where the temperature is below 30°C and the relative humidity is lower than 70%. B.The shelf life of a dry-packaged product is six months from the date when the product is packaged and sealed. C.The package contains a humidity indicator card (HIC).
Bake a module based on HIC status as follows when you unpack the module package: A.If the 30%, 40%, and 50% circles are blue, bake the module for 2 consecutive hours. B. If the 30% circle is pink, bake the module for 4 consecutive hours. C.If the 30% and 40% circles are pink, bake the module for 6 consecutive hours. D.If the 30%, 40%, and 50% circles are pink, bake the module for 12 consecutive hours.
Perform SMT placement based on the following reflow oven temperature curve. The highest temperature is 245°C. Based on the IPC/JEDEC standard, perform reflow soldering on a module at most twice.
|Product Model||MOQ（pcs）||Packing Method||Number of Modules in Each Reel Pack||Number of Reel Packs in Each Box|
|WB3L||4000||Carrier tape and reel packing||1000||4|
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 two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will 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 encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help.
Radiation Exposure 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.
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. The firmware setting is not accessible by the end user.
The host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. The end user manual shall include all required regulatory information/warning as shown in this manual, including: 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-WB3L.The final end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-WB3L”
This device is intended only for OEM integrators under the following conditions:
1)The 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 above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.
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,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). Instead，it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.
The device could be used with a separation distance of 20cm to the human body.
How helpful was this page?