更新时间:2024-08-30 08:41:56下载pdf
BT7L 是由涂鸦智能开发的一款低功耗嵌入式蓝牙模组。它主要由一个高集成度的蓝牙芯片 TLSR8250F512ET32 和少量的外围电路构成,内置了蓝牙网络通信协议栈和丰富的库函数。
BT7L 还包含低功耗的 32 位 MCU,蓝牙 5.0/2.4G Radio,512kB Flash,48kB SRAM,7 个可复用的 I/O 口。
BT7L 共有 2 排引脚,引脚间距 1.5mm。
BT7L 尺寸大小:15±0.35mm (W) × 16.5±0.35mm (L) × 2.85±0.15mm(H),其中 PCB 厚度 0.8±0.1 mm,封装如图所示。
序号 | 符号 | I/O 类型 | 功能 |
---|---|---|---|
1 | SDA | I/O | 对应芯片 PC<0>,I2C 的数据线引脚,可做普通 IO 口。 |
2 | SCL | I/O | 对应芯片 PC<1>,I2C 的时钟线引脚,可做普通 IO 口。 |
3 | C3 | I/O | 对应芯片 PC<3>,普通 IO 口,可作 LED 驱动的 PWM 输出,默认控制绿光。 |
4 | D2 | I/O | 对应芯片 PD<2>,普通 IO 口,可作 LED 驱动的 PWM 输出,默认控制蓝光。 |
5 | C2 | I/O | 对应芯片 PC<2>,普通 IO 口,可作 LED 驱动的 PWM 输出,默认控制暖白光。 |
6 | B5 | I/O | 对应芯片 PB<5>,普通 IO 口,可作 LED 驱动的 PWM 输出,默认控制冷白光。 |
7 | B4 | I/O | 对应芯片 PB<4>,普通 IO 口,可作 LED 驱动的 PWM 输出,默认控制红光。 |
8 | 3.3V | P | 模组电源输入引脚。 |
9 | TX | I/O | 对应芯片PB<1>,串口发送引脚,可作普通 IO 口。 |
10 | RX | I/O | 对应芯片PB<7>,串口接收引脚,可作普通 IO 口。 |
11 | GND | P | 模组电源参考地引脚。 |
12 | SW | I/O | 对应芯片 SWS,蓝牙芯片烧录引脚。 |
13 | RST | I | 对应芯片 RESETB,模组复位引脚,内置上拉电阻。 |
14 | GND | P | 模组电源参考地引脚。 |
说明:
P
表示电源引脚,I/O 表示输入输出引脚。如对 PWM 输出控制的灯色有自己的需求,请与涂鸦联系。
参数 | 描述 | 最小值 | 最大值 | 单位 |
---|---|---|---|---|
Ts | 存储温度 | -65 | 150 | ℃ |
VCC | 供电电压 | -0.3 | 3.9 | 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 | -40 | - | 85 | ℃ |
VCC | 工作电压 | 3.0 | 3.3 | 3.6 | V |
VIL | IO 低电平输入 | VSS | - | VCC*0.3 | V |
VIH | IO 高电平输入 | VCC*0.7 | - | VCC | V |
VOL | IO 低电平输出 | VSS | - | VCC*0.1 | V |
VOH | IO 高电平输出 | VCC*0.9 | - | VCC | V |
符号 | 条件 | 典型值 | 峰值(典型值) | 单位 |
---|---|---|---|---|
Itx | 连续发送,10dBm 输出功率 | 16.8 | 18.4 | mA |
Itx | 连续发送,0dBm 输出功率 | 6.3 | 8.8 | mA |
Irx | 连续接收 | 6.3 | 8.9 | mA |
IDC | 配网工作状态下 | 6.8 | 32 | mA |
IDC | 联网工作状态下 | 6.8 | 32 | mA |
参数项 | 详细说明 |
---|---|
工作频率 | 2.4GHz ISM Band |
无线标准 | 蓝牙 5.0 |
数据传输速率 | 1Mbps,2Mbps |
天线类型 | 板载 PCB 天线 |
参数项 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|
RF 平均输出功率 | -22 | 10 | 10.5 | dBm |
20dB 调制信号带宽(1Mbps) | - | 2500 | - | kHz |
20dB 调制信号带宽(2Mbps) | - | 2600 | - | kHz |
参数项 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|
RX 灵敏度(1Mbps) | - | -94.5 | - | dBm |
RX 灵敏度(2Mbps) | - | -90 | - | dBm |
频率偏移误差(1Mbps) | -300 | - | +300 | kHz |
频率偏移误差(2Mbps) | -200 | - | +200 | kHz |
同信道干扰抑制 | - | -7 | - | dB |
BT7L 使用的是板载 PCB 天线。
为确保 RF 性能的最优化,建议模组天线部分和其他金属件的距离至少保持 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。
正视图
底视图
侧视图
推荐封装
说明:默认的模组外形尺寸公差为 ±0.35mm,关键尺寸公差 ±0.1mm。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。上图中 keep-out 示意区域,不需要上锡,不要走线。
涂鸦出厂的贴片封装模组建议使用 SMT 机器贴片,拆开包装后建议在 24 小时内完成焊接。如果拆封后未使用完,建议放置在湿度不超过 10%RH 的干燥柜内,或重新进行真空包装并记录暴露时间。总暴露时间不超过 168 小时。
涂鸦出厂的模组存储条件如下:
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:
涂鸦出厂的模组当出现可能受潮的情况下需要进行烘烤:
烘烤参数如下:
在整个生产过程中,请对模组进行静电放电(ESD)保护。
为了确保产品合格率,建议使用 SPI 和 AOI 测试设备来监控锡膏印刷和贴装品质。
请根据回流焊曲线图进行温度设定,峰值温度 245℃,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:217-220℃
D:升温斜率:1-3℃/S
E:恒温时间:60-120S,恒温温度:150-200℃
F:液相线以上时间:50-70S
G:峰值温度:235-245℃
H:降温斜率: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。
产品型号 | MOQ(pcs) | 出货包装方式 | 每个卷盘存放模组数 | 每箱包装卷盘数 |
---|---|---|---|---|
BT7L | 4000 | 载带卷盘 | 1000 | 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 to 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-BT7L. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-BT7L”.
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 from the human body.
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