更新时间:2024-06-14 03:26:41下载pdf
HEWRQU1 是由杭州涂鸦信息技术有限公司开发的一款适用于 5V 电平转 3.3V 电平的串口通信的 Wi-Fi 模块。它主要由一个高集成度的无线射频芯片 RTL 8710BN、外扩芯片和 DC-DC 芯片构成,该模块内置了 Wi-Fi 网络协议栈和丰富的库函数。它还包含低功耗的 ARM CM4FCPU、2Mbyte flash 和 256K SRAM。
HEWRQU1 是一个 RTOS 平台,集成了所有 Wi-Fi MAC 以及 TCP/IP 协议的函数库。用户可以基于串口通信对接方式,开发满足自己需求的嵌入式 Wi-Fi 产品。
HEWRQU1 尺寸大小:42.75mm±0.35mm(L) × 21.7±0.35mm(W) × 4.5±0.15mm(H)。
HEWRQU1 尺寸图如图 1 所示:
引脚序号 | 符号 | IO 类型 | 功能 |
---|---|---|---|
1 | A_14 | I/O | GPIO_14 |
2 | A_15 | I/O | GPIO_15 |
3 | EN | P | 外部使能复位引脚(低电有效) |
4 | A_0 | I/O | GPIO_0 ,上电瞬间不能被拉高,起来之后可以配置 |
5 | A_12 | I/O | GPIO_12 |
6 | ADC | AI | ADC 端口,最大输入电压 5V |
7 | A_5 | I/O | GPIO_5 |
8 | 3.3V | P | 模块电源引脚(3.3V) |
9 | GND | P | 电源参考地 |
10 | A_19 | I/O | GPIO_19 |
11 | A_22 | I/O | GPIO_22 |
12 | Log_TX | I/O | UART_Log_TXD (用于打印模块内部信息) |
13 | Log_RX | I/O | UART_Log_RXD (用于打印模块内部信息) |
14 | GND | P | 电源参考地 |
15 | VIN | I/O | 外部输入电源(5V) |
16 | TXD | I/O | UART0_TXD (用户串口) |
17 | RXD | I/O | UART0_RXD (用户串口) |
18 | GND | P | 电源参考地 |
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。RST
只是模组硬件复位引脚,不能清除 Wi-Fi 配网信息。引脚序号 | 符号 | IO 类型 | 功能 |
---|---|---|---|
- | I | 用于模组生产测试 |
测试引脚不推荐使用。
参数 | 描述 | 最小值 | 最大值 | 单位 |
---|---|---|---|---|
Ts | 存储温度 | -40 | 125 | ℃ |
VBAT | 供电电压 | - | 5.5 | 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 | ℃ |
VBAT | 供电电压 | 4.5 | 5 | 5.5 | V |
VIL | IO 低电平输入 | -0.3 | - | VCC*0.25 | V |
VIH | IO 高电平输入 | VCC*0.75 | - | VCC | V |
VOL | IO 低电平输出 | - | - | VCC*0.1 | V |
VoH | IO 高电平输出 | VCC*0.8 | - | VCC | V |
Imax | IO 驱动电流 | - | - | 16 | mA |
工作状态 | 模式 | 速率 | 发射功率/接收 | 典型值 | 单位 |
---|---|---|---|---|---|
发射 | 11b | 11Mbps | +17dBm | 285 | mA |
发射 | 11g | 54Mbps | +14.5dBm | 255 | mA |
发射 | 11n-HT20 | MCS7 | +13.5dBm | 235 | mA |
发射 | 11n-HT40 | MCS7 | +13.5dBm | 235 | mA |
接收 | 11b | 11Mbps | 连续接收 | 90 | mA |
接收 | 11g | 54Mbps | 连续接收 | 90 | mA |
接收 | 11n-HT20 | MCS7 | 连续接收 | 90 | mA |
接收 | 11n-HT40 | MCS7 | 连续接收 | 90 | mA |
工作模式 | 工作状态,Ta=25℃ | 平均值 | 最大值(典型值) | 单位 |
---|---|---|---|---|
快连配网状态 | 模组处于快连配网状态 | 88 | 150 | mA |
热点配网状态 | 模组处在热点配网状态,Wi-Fi 指示灯慢闪 | 95 | 245 | mA |
网络连接状态 | 模组处于联网工作状态,Wi-Fi 指示灯常亮 | 55 | 220 | mA |
依据不同的固件功能,以上参数有所不同。
参数项 | 详细说明 |
---|---|
工作频率 | 2.412~2.484GHz |
Wi-Fi 标准 | IEEE 802.11b/g/n(通道 1-14) |
数据传输速率 |
|
天线类型 | PCB 板载天线 |
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 11M | - | 17 | - | 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 HT20 Mode MCS7 | - | 13.5 | - | dBm |
RF 平均输出功率,802.11n HT40 Mode MCS7 | - | 13.5 | - | dBm |
频率误差 | -20 | - | 20 | 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 DSSS Mode 11M | - | -90 | - | dBm |
PER<10%,RX 灵敏度,802.11g OFDM Mode 54 M | - | -73 | - | dBm |
PER<10%,RX 灵敏度,802.11n OFDM Mode HT20-MCS7 | - | -70 | - | dBm |
有 PCB 板载天线和外接天线两种天线接入方式。默认方式是 PCB 板载天线。
在 Wi-Fi 模组上使用 PCB 板载天线时,为了确保 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。
用户 PCB 板在天线区域勿走线甚至覆铜,以免影响天线性能。布局要点是:确保印制天线正下方或者正上方没有基板介质,确保印制天线的周围远离金属铜皮,以便最大程度地保证天线的辐射效果。
本模组暂无天线连接器。
涂鸦出厂的模块存储条件如下:
注意事项
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:
Refer to IPC/JEDEC standard, Peak Temperature:<245℃, Number of Times:≤2 times,线设置。
本模组为 USB2.0 180 度沉板直脚公座连接器,规格如下图。
产品型号 | MOQ(pcs) | 出货包装方式 | 每层蜂窝存放模组数 | 每箱包装蜂窝层数 |
---|---|---|---|---|
HEWRQU1 | 400 | 蜂窝箱 | 200 | 2 |
Federal Communications Commission (FCC) Declaration of Conformity
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.
This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 15.105 Information to the user.
(b) For a Class B digital device or peripheral, the instructions furnished to the user shall include the following or similar statement, placed in a prominent location in the text of the manual:
Note: This equipment 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 equipment generates, uses, and can radiate radio frequency energy and, if not installed and used by 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:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.
Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
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 terminal user.
The terminal product must be labeled in a visible area with the following:
“Contains Transmitter Module 2AFNL-HEWRQU1”. This radio module must not be installed to co-locate and operate simultaneously with other radios in the host system, additional testing and equipment authorization may be required to operate simultaneously with other radios.
This LMA does not have RF shielding and is tested and approved as a standalone.
This LMA does not have RF shielding and is tested and approved as a standalone configuration, additional evaluation may be required for any system integrated with this radio module.
Declaration of Conformity European Notice
Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this WIFI module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EC. A copy of the Declaration of conformity can be found at http://www.tuya.com.
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