Last Updated on : 2022-09-05 10:36:05download
BT7L-IPEX is an embedded low-power Bluetooth module that Tuya has developed. Embedded with the Bluetooth network protocol stack and rich library functions, it consists of a highly integrated Bluetooth chip (TLSR8250F512ET32) and several peripheral circuits.
BT7L-IPEX contains a low-power 32-bit MCU, Bluetooth LE 5.0, 2.4 GHz radio, 512-KB flash memory, 48-KB SRAM, and 7 reusable I/O interfaces.
BT7L-IPEX has two lines of pins with a pin spacing of 1.5 mm.
The BT7L-IPEX dimensions (H x W x L) are 2.85 ±0.15mm x 15±0.35 mm x 16.5±0.35 mm. The following figures show the top and bottom views.
|Pin No.||Symbol||I/O type||Function|
|1||SDA||I/O||I2C data cable pin, which can be used as a common I/O pin and is connected to the PC0 pin on the internal IC|
|2||SCL||I/O||I2C clock cable pin, which can be used as a common I/O pin and is connected to the PC1 pin on the internal IC|
|3||C3||I/O||Common I/O pin, which can be used as a PWM output of the LED drive and is connected to the PC3 pin on the internal IC (By default, the pin controls the cold green light.)|
|4||D2||I/O||Common I/O pin, which can be used as a PWM output of the LED drive and is connected to the PD2 pin on the internal IC (By default, the pin controls the cold blue light.)|
|5||C2||I/O||Common I/O pin, which can be used as a PWM output of the LED drive and is connected to the PC2 pin on the internal IC (By default, the pin controls the cold warm white light.)|
|6||B5||I/O||Common I/O pin, which can be used as a PWM output of the LED drive and is connected to the PB5 pin on the internal IC (By default, the pin controls the cold cold white light.)|
|7||B4||I/O||Common I/O pin, which can be used as a PWM output of the LED drive and is connected to the PB4 pin on the internal IC (By default, the pin controls the cold red light.)|
|8||3V3||P||Power supply pin|
|9||TX||I/O||Serial interface transmission pin, which can be used as a common I/O pin and is connected to the PB1 pin on the internal IC|
|10||RX||I/O||Serial interface receiving pin, which can be used as a common I/O pin and is connected to the PB7 pin on the internal IC|
|11||GND||P||Power supply reference ground pin|
|12||SW||I/O||Bluetooth chip programming pin, which is connected to the SWS pin on the internal IC|
|13||RST||I||Reset pin, which is connected to the RESETB pin on the internal IC (The module is embedded with a pull-up resistor.)|
|14||GND||P||Power supply reference ground pin|
Note: P indicates a power supply pin, and I/O indicates an input/output pin.
If you have any other special requirements on light colour controlled by the PWM output, contact Tuya business personnel.
|Parameter||Description||Minimum value||Maximum value||Unit|
|VCC||Power supply voltage||–0.3||3.9||V|
|ESD voltage (human body model)||Tamb-25°C||N/A||2||kV|
|ESD voltage (machine model)||Tamb-25°C||N/A||0.5||kV|
|Parameter||Description||Minimum value||Typical value||Maximum value||Unit|
|VIL||I/O low-level input||VSS||N/A||VCC*0.3||V|
|VIH||I/O high-level input||VCC*0.7||N/A||VCC||V|
|VOL||I/O low-level output||VSS||N/A||VCC*0.1||V|
|VOH||I/O high-level output||VCC*0.9||N/A||VCC||V|
|Symbol||Condition||Typical value||Peak value (Typical value)||Unit|
|Itx||Continuous TX, 10 dBm output power||16.8||18.4||mA|
|Itx||Continuous TX, 0 dBm output power||6.3||8.8||mA|
|Working frequency||2.4 GHz ISM band|
|Wireless standard||Bluetooth LE 5.0|
|Data transmission rate||1 Mbit/s, 2 Mbit/s|
|Antenna type||IPEX antenna|
|Parameter||Minimum Value||Typical Value||Maximum Value||Unit|
|Average RF output power||–22||10||10.5||dBm|
|20 dB modulation signal bandwidth (1 Mbit/s)||N/A||2500||N/A||kHz|
|20 dB modulation signal bandwidth (2 Mbit/s)||N/A||2600||N/A||kHz|
|Parameter||Minimum value||Typical value||Maximum value||Unit|
|RX sensitivity (1 Mbit/s)||N/A||–94.5||N/A||dBm|
|RX sensitivity (2 Mbit/s)||N/A||–90||N/A||dBm|
|Frequency offset error (1 Mbit/s)||–300||N/A||+300||kHz|
|Frequency offset error (2 Mbit/s)||–200||N/A||+200||kHz|
|Co-channel interference suppression||N/A||–7||N/A||dB|
BT7L-IPEX uses the first-generation IPEX antenna base:
BT7L-IPEX uses the FPC-IPEX antenna:
To ensure optimal RF performance, it is recommended that the antenna be at least 15 mm away from other metal parts. Do not wrap the metal parts around the antenna to avoid affecting the radiation performance of the antenna. It is recommended to cut out the adapter plate in the antenna area.
Note: The default dimensional tolerance is ±0.35 mm, and the tolerance for key dimensions is ±0.1 mm. If you have any other special requirements, clearly specify them in the datasheet after communication.
The moisture-proof bag must be placed in an environment where the temperature is below 40°C and the relative humidity is lower than 90%.
The shelf life of a dry-packaged product is 12 months from the date when the product is packaged and sealed.
There is a humidity indicator card (HIC) in the packaging bag.
Set oven temperatures according to the following temperature curve of reflow soldering. The peak temperature is 245°C.
A: Temperature axis
B: Time axis
C: Liquidus temperature: 217 to 220°C
D: Ramp-up slope: 1 to 3°C/s
E: Duration of constant temperature: 60 to 120s; the range of constant temperature: 150 to 200°C
F: Duration above the liquidus: 50 to 70s
G: Peak temperature: 235 to 245°C
H: Ramp-down slope: 1 to 4°C/s
Note: The above curve is just an example of the solder paste SAC305. For more details about other solder pastes, please refer to Recommended oven temperature curve in the solder paste specifications.
|Product model||MOQ||Packing Method||Number of modules per reel||Number of reels per carton|
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.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant 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 in accordance with 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:
Radiation Exposure Statement
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 20 cm between the radiator and your body.
This radio module must not be installed to co-locate and operate simultaneously with other radios in host system except in accordance with FCC multi-transmitter product procedures. Additional testing and equipment authorization may be required to operate simultaneously with other radio.
The availability of some specific channels and/or operational frequency bands is country dependent and 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 to 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/warning 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 gotten an FCC ID: 2ANDL-BT7L-IPEX. The final end product must be labeled in a visible area with the following:
“Contains Transmitter Module FCC ID: 2ANDL-BT7L-IPEX”
This device is intended only for OEM integrators under the following conditions:
(1) The antenna must be installed such that 20 cm is maintained between the antenna and users.
(2) The transmitter module may not be co-located with any other transmitter or antenna.
As long as the two 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 20 cm from the human body.
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