WBR3 共有 2 排引脚（2×8），引脚间距为 2mm。
WBR3 尺寸大小：16±0.35 mm (W)×24±0.35 mm (L) ×2.9±0.15 mm (H)。WBR3尺寸图如下图所示：
WBR3 是由涂鸦智能开发的一款低功耗嵌入式 Wi-Fi+BLE 模组。它由一个高集成度的无线射频芯片 RTL8720CF 构成，内置了 Wi-Fi 网络协议栈和丰富的库函数。
WBR3 包含低功耗的 KM4 MCU，WLAN MAC，1T1R WLAN，最高主频 100MHz，内置 256K SRAM ，芯片内置 2Mbyte flash 和丰富的外设资源。
WBR3 是一个 RTOS 平台，集成了所有 Wi-Fi MAC 以及 TCP/IP 协议的函数库。用户可以基于这些开发满足自己需求的嵌入式 Wi-Fi 产品。
| 更新日期 | 更新内容 | 更新后版本 |
|---|---|---|
| 2019-10-21 | 新建文档 | V1.0 |
WBR3 共有 2 排引脚（2×8），引脚间距为 2mm。
WBR3 尺寸大小：16±0.35 mm (W)×24±0.35 mm (L) ×2.9±0.15 mm (H)。WBR3尺寸图如下图所示：
| 引脚 | 符号 | I/O类型 | 功能 |
|---|---|---|---|
| 1 | NC | / | 悬空不接，为了兼容其他模组 |
| 2 | A_7 | I/O | GPIOA_7，硬件PWM，IC Pin21 |
| 3 | EN | I/O | 模组使能引脚，高电平有效，模组已上拉高电平，用户可外部控制该引脚 |
| 4 | A_11 | I/O | GPIOA_11，硬件PWM，IC Pin25 |
| 5 | A_2 | I/O | GPIOA_2，硬件PWM，IC Pin18 |
| 6 | A_3 | I/O | GPIOA_3，硬件PWM，IC Pin19 |
| 7 | A_4 | I/O | GPIOA_4，硬件PWM，IC Pin20 |
| 8 | VCC | P | 模组电源引脚（3.3V） |
| 9 | GND | P | 电源参考地 |
| 10 | A_12 | I/O | GPIOA_12，硬件PWM，IC Pin26 |
| 11 | A_16 | I/O | GPIOA_16，UART_Log_TXD(用于打印模组内部信息)，可配置成普通GPIO |
| 12 | A_17 | I/O | GPIOA_17，硬件PWM，IC Pin38 |
| 13 | A_18 | I/O | GPIOA_18，硬件PWM，IC Pin39 |
| 14 | A_19 | I/O | GPIOA_19，硬件PWM，IC Pin40 |
| 15 | RXD | I/O | GPIOA_13，UART0_RXD（用户串口） |
| 16 | TXD | I/O | GPIOA_14，UART0_TXD（用户串口） |
说明：P表示电源引脚，I/O表示输入输出引脚
| 参数 | 描述 | 最小值 | 最大值 | 单位 |
|---|---|---|---|---|
| Ts | 存储温度 | -40 | 105 | ℃ |
| VDD | 供电电压 | -0.3 | 3.6 | V |
| 静电释放电压（人体模型） | TAMB-25℃ | - | 2 | KV |
| 静电释放电压（机器模型） | TAMB-25℃ | - | 0.5 | KV |
| 参数 | 描述 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|
| Ta | 工作温度 | -20 | - | 85 | ℃ |
| VDD | 工作电压 | 3.0 | - | 3.6 | V |
| VIL | I/O低电平输入 | - | - | 0.8 | V |
| VIH | I/O高电平输入 | 2.0 | - | - | V |
| VOL | I/O低电平输出 | - | - | 0.4 | V |
| VOH | I/O高电平输出 | 2.4 | - | - | V |
| Imax | I/O驱动电流 | - | - | 16 | mA |
| Cpad | 输入引脚电容 | - | 2 | - | pF |
TX 连续发送时功耗：
| 符号 | 模式 | 功率 | 平均值 | 峰值（典型值） | 单位 |
|---|---|---|---|---|---|
| IRF | 11b 11Mbps | 17dBm | 217 | 268 | mA |
| IRF | 11b 11Mbps | 18dBm | 231 | 283 | mA |
| IRF | 11g 54Mbps | 15dBm | 159 | 188 | mA |
| IRF | 11g 54Mbps | 17.5dBm | 177 | 213 | mA |
| IRF | 11n BW20 MCS7 | 13dBm | 145 | 167 | mA |
| IRF | 11n BW20 MCS7 | 16.5dBm | 165 | 193 | mA |
RX 连续接收时功耗：
| 符号 | 模式 | 平均值 | 峰值（典型值） | 单位 |
|---|---|---|---|---|
| IRF | 11B 11M | 63 | 65 | mA |
| IRF | 11G 54M | 65 | 67 | mA |
| IRF | 11N HT20 MCS7 | 65 | 67 | mA |
| 工作模式 | 工作状态，TA=25℃ | 平均值 | 峰值（典型值） | 单位 |
|---|---|---|---|---|
| 快连配网状态 | 模组处于快连配网状态，WIFI 指示灯快闪 | 75 | 324 | mA |
| 网络连接空闲状态 | 模组处于联网工作状态，WiFi 指示灯常亮 | 64 | 314 | mA |
| 网络连接操作状态 | 模组处于联网工作状态，WiFi 指示灯常亮 | 66 | 305 | mA |
| 断网状态 | 模组处于断网工作状态，WiFi 指示灯常灭 | 66 | 309 | mA |
| 参数项 | 详细说明 |
|---|---|
| 频率范围 | 2.400~2.4835GHz |
| Wi-Fi标准 | IEEE 802.11b/g/n(通道 1-14) |
| BLE标准 | 蓝牙4.2 |
| 数据传输速率 | 11b:1,2,5.5, 11 (Mbps) |
| 数据传输速率 | 11g:6,9,12,18,24,36,48,54(Mbps) |
| 数据传输速率 | 11n:HT20 MCS0~7 |
| 天线类型 | PCB 天线，增益2.5dBi |
TX连续发送性能：
| 参数项 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|
| RF平均输出功率，802.11b CCK Mode 1M | - | 17.5 | - | dBm |
| RF平均输出功率，802.11g OFDM Mode 54M | - | 14.5 | - | dBm |
| RF平均输出功率，802.11n OFDM Mode MCS7 | - | 13.5 | - | dBm |
| RF平均输出功率，BLE 4.2 1M | - | 6.5 | - | dBm |
| 频率误差 | -20 | - | 20 | ppm |
| EVM@802.11b CCK 11Mbps Mode 17.5dBm | - | - | -10 | dB |
| EVM@802.11g OFDM 54Mbps Mode 14.5dBm | - | - | -29 | dB |
| EVM@802.11n OFDM MCS7 Mode 13.5dBm | - | - | -30 | dB |
接收性能：
| 参数项 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|
| PER<8%，RX灵敏度，802.11b CCK Mode 1M | - | -91 | - | dBm |
| PER<10%，RX灵敏度，802.11g OFDM Mode 54M | - | -75 | - | dBm |
| PER<10%，RX灵敏度，802.11n OFDM Mode MCS7 | - | -72 | - | dBm |
| PER<10%，RX灵敏度， BLE 4.2 1M | - | -93 | - | dBm |
只有 PCB 板载天线接入方式，天线增益 2.5dBi。
在 Wi-Fi 模组上使用 PCB 板载天线时，为确保 Wi-Fi 性能的最优化，建议模组天线部分和其他金属件距离至少在 15mm 以上。
RTL8720CF 芯片对上电时序有要求，建议3.3V电压从0V爬升到3.3V的时间在40ms之内.
| 符号 | 参数 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|
| TPRDY | 3.3V ready time | 0.6 | 20 | mS | |
| CHIP_EN | CHIP_EN ready time | 0.6 | 20 | mS |
模组的底板设计时，模组的CHIP_EN脚预留复位IC，推荐IC型号为飞虹EC808CN27B3R或者贝岭BL8506-27NRO，SOT23封装，参考电路如下.
WBR3的PCB机械尺寸大小：16±0.35 mm (W)×24±0.35 mm (L) ×0.8±0.1 mm (H)。WBR3的机械尺寸如下图所示。
备注：默认的尺寸公差为± 0.35mm，关键尺寸如果客户有明确要求，请沟通后在规格书中进行明确的标定。
WBR3 原理图引脚对应图
WBR3 PCB封装
涂鸦出厂的邮票口封装模组必须由 SMT 机器贴片，并且拆开包装烧录固件后必须 24 小时内完成贴片，否则要重新抽真空包装，贴片前要对模组进行烘烤。
涂鸦出厂的模组存储条件如下：
涂鸦出厂的模组需要烘烤，湿度指示卡及烘烤的几种情况如下所述：
烘烤参数如下：
如果拆封时间超过 3 个月，禁止使用SMT工艺焊接此批次模组，因为此 PCB 为沉金工艺，超过 3 个月后焊盘氧化严重，SMT 贴片时极有可能导致虚焊、漏焊，由此带来的种种问题我司不承担相应责任。
SMT 贴片前，请对模组进行 ESD（静电放电、静电释放）保护。
为了确保回流焊合格率，首次贴片请抽取 10% 产品进行目测、AOI 检测，以确保炉温控制、器件吸附方式、摆放方式的合理性。之后的批量生产建议每小时抽取 5-10 片进行目测、AOI 检测。
请根据回流焊曲线图进行 SMT 贴片，峰值温度 245℃ ，回流焊温度曲线如下图所示。
| 型号 | MOQ（pcs） | 出货包装方式 | 每个卷盘存放模组数 | 每箱包装卷盘数 |
|---|---|---|---|---|
| WBR3 | 3600 | 载带卷盘 | 900 | 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:
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 a minimum distance of 20cm between the radiator and your body.
Important Note
This radio module must not be installed to co-locate and operating simultaneously with other radios in the host system except in accordance with FCC multi-transmitter product procedures. Additional testing and equipment authorization may be required to operate simultaneously with other radios.
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 with 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 has got an FCC ID: 2ANDL-WBR3. The final end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-WBR3”
This device is intended only for OEM integrators under the following conditions:
The antenna must be installed such that 20cm is maintained between the antenna and users, and
The transmitter module may not be co-located with any other transmitter or antenna.
As long as the 2 conditions above are met, further transmitter tests 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 the 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.