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XR2 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 XR809 和少量外围器件构成,内置了 Wi-Fi 网络协议栈和丰富的库函数。
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XR2 内嵌 ARM Cortex-M4F CPU,2Mbyte Flash Rom,384KB SRAM 和丰富的外设资源。XR2 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 |
---|---|---|
2019-10-14 | 新建文档 | 2.0.0 |
2020-01-13 | 修改电气参数 | 2.0.1 |
2020-05-28 | 更新Tx功率参数和功耗参数 | 2.0.2 |
XR2共有2排引脚,引脚间距为2mm。
XR2尺寸大小:15±0.35mm (W)×18±0.35mm (L) ×2.5±0.15mm(H),其中 PCB 板厚0.8mm,公差±0.1mm。
XR2 引脚排列说明:
引脚 | 符号 | I/O类型 | 功能 |
---|---|---|---|
1 | VCC-BAT | P | 电源输入(3.3V) |
2 | PA22 | I/O | PA22,对应IC PA22 (pin 44) |
3 | GND | P | 电源参考地 |
4 | PA21 | I/O | PA21,对应IC PA21 (pin 43) |
5 | U1RXD | I/O | 通信接收串口UART_RX |
6 | PA20 | I/O | PA20,对应IC PA20 (pin 42) |
7 | U1TXD | I/O | 通信发射串口UART_TX |
8 | PA14 | I/O | PA14,对应IC PA14 (pin 32),可做ADC口 |
9 | PA19 | I/O | PA19,对应IC PA19 (pin 41) |
10 | CHIP_PWD | I/O | 使能复位管脚(低电平有效,默认高电平) |
11 | PB03 | I/O | PB03,对应IC PB03 (Pin11) |
TP1 | PB02 | I/O | PB02,对应IC PB02 (pin 10) |
TP2 | TP2 | U0RXD | 可用作调试串口 |
TP3 | TP3 | U0TXD | 可用作调试串口 |
RF-TEST | RF-TEST | P | RF 测试点 |
说明:
- P表示电源引脚,I/O表示输入输出引脚,TP为测试引脚
- Pin8 (PA14)不使用时,需悬空处理。作为ADC输入口时,输入电压范围限定为0~2.5V。
- 固件烧录时,pin11 (PB03) 和TP1 (PB02) 需同时拉低,模组正常工作时,不能同时拉低
参数 | 描述 | 最小值 | 最大值 | 单位 |
---|---|---|---|---|
Ts | 存储温度 | -40 | 125 | ℃ |
VCC | 供电电压 | -0.3 | 5.8 | V |
静电释放量(人体模型) | TAMB-25℃ | - | 4 | kV |
静电释放量(机器模型) | TAMB-25℃ | - | 0.8 | 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 | 2.7 | 3.3 | 5.5 | V |
VIL | IO 低电平输入 | -0.3 | - | 1.32 | V |
VIH | IO 高电平输入 | 2.06 | - | 3.6 | V |
VOL | IO 低电平输出 | -0.3 | - | 0.4 | V |
VOH | IO 高电平输出 | 2.9 | - | 3.3 | V |
Imax | IO 驱动电流 | - 40 | - | 40 | mA |
RPU | I/O数日上拉电阻 | 40 | - | 110 | KΩ |
RPD | I/O数日下拉电阻 | 40 | - | 110 | KΩ |
符号 | 模式 | 速率 | 发射功率/接收 | 典型值 | 单位 |
---|---|---|---|---|---|
发射 | 11b | 11Mbps | +14dBm | 155 | mA |
发射 | 11g | 54Mbps | +13.5dBm | 136 | mA |
发射 | 11n | MCS0 | +13dBm | 144 | mA |
发射 | 11n | MCS7 | +13dBm | 140 | mA |
接收 | 11b | 11Mbps | 连续接收 | 34 | mA |
接收 | 11g | 54Mbps | 连续接收 | 34 | mA |
接收 | 11n | MCS7 | 连续接收 | 34 | 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,Wi-Fi 指示灯快闪 | 47 | 177 | mA |
热点配网状态 | 模组处在热点配网状态,Wi-Fi 指示灯慢闪 | 82 | 184 | mA |
网络连接空闲状态 | 模组处于联网工作状态,Wi-Fi 指示灯常亮 | 38 | 131 | mA |
网络连接操作状态 | 模组处于联网工作状态,Wi-Fi 指示灯常亮 | 38 | 131 | mA |
断网状态 | 模组处于断网工作状态,Wi-Fi 指示灯常灭 | 45 | 185 | mA |
说明: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。
参数项 | 详细说明 |
---|---|
工作频率 | 2.412~2.4835GHz |
Wi-Fi 标准 | IEEE 802.11n/g/b(通道 1-14) |
数据传输速率 | 11b:1,2,5.5, 11 (Mbps) 11g:6,9,12,18,24,36,48,54(Mbps) 11n:HT20 MCS0 ~7 |
天线类型 | PCB 天线,天线增益1.0dBi |
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 | - | 14 | - | dBm |
RF 平均输出功率,802.11g OFDM Mode 54M | - | 13.5 | - | dBm |
RF 平均输出功率,802.11n OFDM Mode MCS7 | - | 13 | - | dBm |
频率误差 | -15 | - | -15 | ppm |
EVM@802.11b CCK 11Mbps Mode 17.5dBm | - | -15 | - | dB |
EVM@802.11g OFDM 54Mbps Mode 15.0dBm | - | -29 | - | dB |
EVM@802.11n OFDM MCS7 Mode 14.0dBm | - | -30 | - | dB |
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 | - | -89 | - | 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 |
默认方式是 PCB 板载天线,天线增益1.0dBi。
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。
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,这样可以最大程度上保证天线的辐射效果。
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:
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 | 出货包装方式 | 每箱包装卷盘数 |
---|---|---|---|---|
XR2 | 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 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 operating 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-XR2. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-XR2.
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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