更新时间:2024-08-19 02:35:39下载pdf
WR2 是由涂鸦智能开发的一款低功耗嵌入式 Wi-Fi 模组。它由一个高集成度的无线射频芯片 RTL8710BN 和外扩 flash 芯片构成,内置了 Wi-Fi 网络协议栈和丰富的库函数。
WR2 包含低功耗的 ARM CM4F、WLAN MAC、1T1R WLAN,最高主频 125MHz,内置 256K SRAM ,2Mbyte flash 和丰富的外设资源。
WR2 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。WR2 结构如下图所示:
WR2 共有 2 排引脚(2×9),引脚间距为 2.0mm。
WR2 尺寸大小:15±0.35 mm (W)×18 ±0.35mm (L) ×4.9±0.15 mm (H)(底面器件高1.5mm), 尺寸如下图所示:
常规引脚定义如下表所示:
WR2 引脚排列说明:
引脚 | 符号 | I/O 类型 | 功能 |
---|---|---|---|
1 | VD33 | P | 模组电源引脚(3.3V) |
2 | GPIOA_12 | I/O | GPIOA_12,通用 GPIO,硬件 PWM,IC Pin17 |
3 | GND | P | 电源参考地 |
4 | GPIOA_0 | I/O | GPIOA_0,上电瞬间不能被拉高,起来之后可配置,硬件 PWM, IC Pin16 |
5 | GPIOA_18 | I/O | UART0_RXD(用户串口) |
6 | GPIOA_5 | I/O | GPIOA_5,通用 GPIO,硬件 PWM,IC Pin28 |
7 | GPIOA_23 | I/O | UART0_TXD(用户串口) |
8 | ADC | AI | ADC 端口,最大输入电压 5V |
9 | GPIOA_14 | I/O | GPIOA_14 ,通用 GPIO,硬件 PWM,IC Pin13 |
10 | CHIP_EN | I/O | 软件 Disable 该功能,用户可以不接 |
11 | GPIOA_15 | I/O | GPIOA_15,通用 GPIO,硬件 PWM,IC Pin14 |
说明:
P
表示电源引脚,I/O 表示输入输出引脚,AI 表示模拟输入引脚。
绝对参数:
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 |
正常工作条件:
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 | IO 低电平输入 | -0.3 | - | VDD*0.25 | V |
VIH | IO 高电平输入 | VDD*0.75 | - | 3.6 | V |
VOL | IO 低电平输出 | - | - | VDD*0.1 | V |
VOH | IO 高电平输出 | VDD*0.8 | - | VDD | V |
Imax | IO 驱动电流 | - | - | 16 | mA |
Cpad | 输入引脚电容 | - | 2 | - | pF |
符号 | 模式 | 功率 | 平均值 | 峰值(典型值) | 单位 |
---|---|---|---|---|---|
IRF | 11b 11Mbps | 17dBm | 287 | 367 | mA |
IRF | 11b 11Mbps | 18dBm | 295 | 382 | mA |
IRF | 11g 54Mbps | 15dBm | 255 | 406 | mA |
IRF | 11g 54Mbps | 17.5dBm | 267 | 428 | mA |
IRF | 11n BW20 MCS7 | 13dBm | 244 | 395 | mA |
IRF | 11n BW20 MCS7 | 16.5dBm | 257 | 422 | mA |
IRF | 11n BW40 MCS7 | 13dBm | 220 | 393 | mA |
IRF | 11n BW40 MCS7 | 16.5dBm | 230 | 420 | mA |
符号 | 模式 | 典型值 | 单位 |
---|---|---|---|
IRF | CPU Sleep | 90 | mA |
IRF | CPU Active | 120 | mA |
模组工作电流:
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,Wi-Fi 指示灯快闪 | 115 | 376 | mA |
热点配网状态 | 模组处在热点配网状态,Wi-Fi 指示灯慢闪 | 60 | 386 | mA |
网络连接状态 | 模组处于联网工作状态,Wi-Fi 指示灯常亮 | 105 | 389 | mA |
断网状态 | 模组处于断网工作状态, Wi-Fi 指示灯常灭 | 45 | 381 | mA |
注意:峰值持续时间约 5μs。以上参数依据不同的固件功能,参数有所不同。
射频基本特性:
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) |
数据传输速率 |
|
天线类型 | PCB_Onboard 板载天线 |
TX 连续发送时功率:
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 | 11M | - | 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 |
频率误差 | -10 | - | 10 | ppm |
RX 灵敏度:
参数项 | 最小值 | 典型值 | 最大值 | 单位 | |
---|---|---|---|---|---|
PER<8%,RX 灵敏度,802.11b CCK Mode | 11M | - | -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 |
只有 PCB 板载天线接入方式。
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。
WR2 的 PCB 机械尺寸大小:15±0.35 mm (W)×18 ±0.35mm (L) ×0.8±0.1 mm (H)。
模组机械尺寸:
WR2 原理图引脚:
WR2 PCB 封装:
请参考波峰焊接炉温建议进行炉温设定,峰值温度 260℃±5℃,波峰焊接温度曲线如下图所示:
焊接温度建议:
波峰焊接炉温曲线建议 | 手工焊接温度建议 | ||
---|---|---|---|
预热温度 | 80-130℃ | 焊接温度 | 360℃±20℃ |
预热时间 | 75-100S | 焊接时间 | 小于 3S/点 |
波峰接触时间 | 3-5S | NA | NA |
锡缸温度 | 260±5℃ | NA | NA |
升温斜率 | ≤2℃/S | NA | NA |
降温斜率 | ≤6℃/S | NA | NA |
涂鸦出厂的模组存储条件如下:
使用防潮袋真空包装,储存在温度 <40℃、湿度 <90%RH 的环境中。
干燥包装的产品,保质期为从包装密封之日起 12 个月的时间。
密封包装内装有湿度指示卡:
产品型号 | MOQ(pcs) | 出货包装方式 | 每个卷盘存放模组数(pcs) | 每箱包装卷盘数 |
---|---|---|---|---|
WR2 | 2800 | 载带卷盘 | 700 | 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 device.
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 device has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used following 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 device does cause harmful interference to radio or television reception, which can be determined by turning the device 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 device complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This device 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 operate simultaneously with other radios in the host system except following FCC multi-transmitter product procedures. Additional testing and device 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/warnings 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-WR2. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-WR2”.
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.
The device could be used with a separation distance of 20cm to the human body.
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