更新时间:2022-06-02 03:45:27下载pdf
CBU 是由杭州涂鸦信息技术有限公司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 BK7231N 和少量外围器件构成,可以支持 AP 和 STA 双角色连接,并同时支持低功耗蓝牙连接。
CBU 内置运行速度最高可到 120 MHz 的 32-bit MCU,内置2Mbyte 闪存和 256 KB RAM。可以使得模组支持Tuya云连接,并且 MCU 专为信号处理扩展的指令使其可以有效地实现音频编码和解码。拥有丰富的外设,如 PWM、UART、SPI。多达五路的 32 位 PWM 输出使芯片非常适合高品质的 LED 控制。
更新日期 | 更新内容 | 更新后版本 |
---|---|---|
2020-10-16 | 新建文档 | V1.0.0 |
2020-11-24 | 更新测试数据 | V1.0.1 |
CBU尺寸大小:15.8±0.35mm (W)×20.3±0.35mm (L) ×2.7±0.15mm (H)。CBU尺寸如下图所示:
引脚序号 | 符号 | IO类型 | 功能 |
---|---|---|---|
1 | P14 | I/O | 普通GPIO,可以复用为SPI_SCK(对应IC的Pin 11) |
2 | P16 | I/O | 普通GPIO,可以复用为SPI_MOSI(对应IC的Pin 12) |
3 | P20 | I/O | 普通GPIO(对应IC的Pin 20) |
4 | P22 | I/O | 普通GPIO(对应IC的Pin 18) |
5 | ADC | I/O | ADC口,对应IC的P23(对应IC的Pin 17) |
6 | RX2 | I/O | UART_RX2,对应IC的P1(对应IC的Pin 28) |
7 | TX2 | I/O | UART_TX2,打印日志口,对应IC的P0(对应IC的Pin 29) |
8 | P8 | I/O | 支持硬件PWM2(对应IC的Pin 24) |
9 | P7 | I/O | 支持硬件PWM1(对应IC的Pin 23) |
10 | P6 | I/O | 支持硬件PWM0(对应IC的Pin 22) |
11 | P26 | I/O | 支持硬件PWM5(对应IC的Pin 15) |
12 | P24 | I/O | 支持硬件PWM4(对应IC的Pin 16) |
13 | GND | P | 电源地 |
14 | 3V3 | P | 电源3V3 |
15 | TX1 | I/O | UART_TX1,用户数据发送口,对应IC的Pin 27;MCU通用对接参考<CBx 系列模组 MCU对接设计指南> |
16 | RX1 | I/O | UART_RX1,用户数据接收口,对应IC的Pin 26;MCU通用对接参考<CBx 系列模组 MCU对接设计指南> |
17 | P28 | I/O | 普通GPIO(对应IC的Pin 10) |
18 | CEN | I/O | 复位脚,低电平有效,内部拉高处理,兼容其他模组设计对接(对应IC的Pin 21) |
19 | P9 | I/O | 普通GPIO(对应IC的Pin 25) |
20 | P17 | I/O | 普通GPIO,可以复用为SPI_MISO(对应IC的Pin 14) |
21 | P15 | I/O | 普通GPIO,可以复用为SPI_CS,非SPI应用不建议使用该引脚(对应IC的Pin 13) |
测点 | CSN | I/O | 模式选择脚,上电前拉低进入测试固件,悬空或拉高进入应用固件。对应IC的Pin 19 |
说明:P 表示电源引脚,I/O 表示输入输出引脚。
MCU对接方案需参照涂鸦设计文档 CBx 系列模组 MCU对接设计指南。
参数 | 描述 | 最小值 | 最大值 | 单位 |
---|---|---|---|---|
Ts | 存储温度 | -55 | 125 | ℃ |
VBAT | 供电电压 | -0.3 | 3.9 | V |
静电释放电压(人体模型) | TAMB-25℃ | -4 | 4 | kV |
静电释放电压(机器模型) | TAMB-25℃ | -200 | 200 | V |
参数 | 描述 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|---|
Ta | 工作温度 | -40 | - | 105 | ℃ |
VBAT | 供电电压 | 3 | 3.3 | 3.6 | V |
VOL | IO低电平输出 | VSS | - | VSS+0.3 | V |
VOH | IO高电平输出 | VBAT-0.3 | - | VBAT | V |
Imax | IO驱动电流 | - | 6 | 20 | mA |
工作状态 | 模式 | 速率 | 发射功率/接收 | 平均值 | 峰值(典型值) | 单位 |
---|---|---|---|---|---|---|
发射 | 11b | 11Mbps | +16dBm | 270 | 300 | mA |
发射 | 11g | 54Mbps | +15dBm | 260 | 280 | mA |
发射 | 11n | MCS7 | +14dBm | 253 | 273 | mA |
接收 | 11b | 11Mbps | 连续接收 | 73 | 82 | mA |
接收 | 11g | 54Mbps | 连续接收 | 75 | 82 | mA |
接收 | 11n | MCS7 | 连续接收 | 75 | 82 | 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(蓝牙配网) | 模组处于快连配网状态,Wi-Fi指示灯快闪 | 85 | 360 | mA |
快连配网状态(AP配网) | 模组处在热点配网状态,Wi-Fi指示灯慢闪 | 80 | 380 | mA |
快连配网状态(EZ配网) | 模组处于快连配网状态,WIFI指示灯快闪 | 87 | 360 | mA |
网络连接状态 | 模组处于联网工作状态, Wi-Fi 指示灯常亮 | 85 | 390 | mA |
弱网连接状态 | 模组和热点处于弱网连接状态, Wi-Fi 指示灯常亮 | 208 | 395 | mA |
网络断连状态 | 模组处于断网工作状态, Wi-Fi 指示灯常灭 | 78 | 385 | mA |
模组Disable状态 | 模组处于CEN拉低状态 | 330 | - | uA |
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 | 11b:1,2,5.5, 11 (Mbps); 11g:6,9,12,18,24,36,48,54(Mbps); 11n: HT20 MCS0~7; 11n: HT40 MCS0~7 |
天线类型 | PCB天线 |
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 | - | 16 | - | dBm |
RF平均输出功率,802.11g OFDM Mode 54M | - | 15 | - | dBm |
RF平均输出功率,802.11n OFDM Mode MCS7(HT20) | - | 14 | - | dBm |
RF平均输出功率,802.11n OFDM Mode MCS7(HT40) | - | 13 | - | dBm |
频率误差 | -20 | - | 20 | ppm |
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 | - | -88 | - | dBm |
PER<10%,RX灵敏度,802.11g OFDM Mode 54M | - | -74 | - | dBm |
PER<10%,RX灵敏度,802.11n OFDM Mode MCS7(HT20) | - | -72 | - | dBm |
PER<10%,RX灵敏度,802.11n OFDM Mode MCS7(HT40) | - | -68 | - | dBm |
PER<10%,RX灵敏度,蓝牙 1M | - | -93 | - | dBm |
参数项 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|
工作频率 | 2402 | - | 2480 | MHz |
空中速率 | - | 1 | - | Mbps |
发射功率 | -20 | 6 | 20 | dBm |
频率误差 | -150 | - | 150 | KHz |
参数项 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|
RX灵敏度 | - | -93 | - | dBm |
最大射频信号输入 | -10 | - | - | dBm |
互调 | - | - | -23 | dBm |
共信道抑制比 | - | 10 | - | dB |
CBU天线为板载PCB天线。
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。
CBU PCB尺寸大小:15.8±0.35mm (W)×20.3±0.35mm (L) ×1.0±0.1mm (H)。
CBU推荐封装
防潮袋必须储存在温度<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:
请根据制程选择相应的焊接方式,SMT参考回流焊接炉温曲线推荐,波峰焊制程参考波峰焊接炉温曲线推荐。设定炉温与实测炉温有一定差距,本文所示温度均为实测温度。
方式一:SMT制程(SMT回流焊接推荐炉温曲线)
请参考回流焊炉温曲线要求进行炉温设定,回流焊温度曲线如下图所示:
A:温度轴
B:时间轴
C:合金液相线温度区间为 217-220℃
D:升温斜率为 1-3℃/S
E:恒温时间为 60-120S;恒温温度区间为 150-200℃
F:液相线以上时间为 50-70S
G:峰值温度为 235-245℃
H:降温斜率为 1-4℃/S
注意:以上推荐曲线以SAC305合金焊膏为例;其他合金焊膏请按焊膏规格书推荐炉温曲线设置。
方式二:波峰焊制程(波峰焊接炉温曲线)
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:
波峰焊接炉温曲线建议 | 手工补焊温度建议 | ||
---|---|---|---|
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 |
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 |
---|---|---|---|---|
CBU | 4400 | 载带卷盘 | 1100 | 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-CBU. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-CBU”.
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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