Last Updated on : 2020-09-29 02:16:24download
BT3L is an embedded Bluetooth low energy (BLE) module that Tuya has developed. It consists of a highly integrated Bluetooth chip (TLSR8250F512ET32) and several peripheral components, with an embedded Bluetooth network protocol stack and robust library functions. BT3L also contains a low-power 32-bit multipoint control unit (MCU), BLE 5.0 component, 2.4 GHz radio component, 4 Mbits flash memory, 48 KB static random-access memory (SRAM), and nine multiplexing I/O interfaces.
|Date||Change Description||Version After Change|
|20190309||This is the first release.||V1.0.0|
|20190723||Optimized the pin definition，Standardized the dimensional tolerances，Updated the temperature range, oven temperature, and working voltage settings, Added packing methods.||V2.0.0|
|20191012||Delete the diagram of architecture||V2.0.1|
BT3L has two rows of pins with a 2 mm pin spacing。
The BT3L dimensions (H x W x D) are 3.3±0.15 mm x 16±0.35 mm x 24±0.35 mm. The PCB thickness is 0.8±0.1 mm. The BT3L pins show as below
|Pin No.||Symbol||I/O Type||Function|
|1||RST||I/O||Hardware reset pin, which is active at a low level and is connected to pin RESETB on the IC|
|2||ADC||AI||12-bit ADC, which is connected to pin TL_C4 on the IC|
|4||TL_D7||I/O||Common I/O, which is connected to pin TL_D7 on the IC|
|5||TL_D2||I/O||Common I/O, which can be used as a PWM output of the LED drive and is connected to pin TL_D2 on the IC|
|6||TL_C3||I/O||Common I/O, which can be used as a PWM output of the LED drive and is connected to pin TL_C3 on the IC|
|7||TL_C2||I/O||Common I/O, which can be used as a PWM output of the LED drive and is connected to pin TL_C2 on the IC|
|8||VDD_BAT||P||Power supply pin (3.3 V)|
|9||GND||P||Power supply reference ground pin|
|10||TL_C0||I/O||GPIO, which is connected topin TL_C0 on the IC|
|11||SWS||I||Programming pin, which is connected to pin TL_A7 on the IC|
|12||TL_A0||I/O||GPIO, which is connected to pin TL_A0 on the IC|
|13||TL_B4||I/O||Common I/O, which can be used as a PWM output of the LED drive and is connected to pin TL_B4 on the IC|
|14||TL_B5||I/O||Common I/O, which can be used as a PWM output of the LED drive and is connected to pin TL_B5 on the IC|
|15||TL_B7||I/O||Serial interface receiving pin (UART RX), which is connected to pin TL_B7 on the IC|
|16||TL_B1||I/O||Serial interface transmission pin (UART TX), which is connected to pin TL_B1on the IC|
|Parameter||Description||Minimum Value||Maximum Value||Unit|
|VCC||Power supply voltage||-0.3||3.9||V|
|Static electricity voltage (human body model)||TAMB-25℃||-||2||KV|
|Static electricity voltage (machine model)||TAMB-25℃||-||0.5||KV|
|Parameter||Description||Minimum Value||Typical Value||Maximum Value||Unit|
|VIL||I/O low-level input||VSS||-||VCC*0.3||V|
|VIH||I/O high-level input||VCC*0.7||-||VCC||V|
|VOL||I/O low-level output||VSS||-||VCC*0.1||V|
|VOH||I/O high-level output||VCC*0.9||-||VCC||V|
|Itx||Constant transmission, 10dBm output power||23||mA|
|IDC||Connected to a mesh network(Average)||6.6||mA|
|IDC||Connected to a mesh network(Peak)||24.9||mA|
|Ideepsleep1||Deep sleep mode 1 (16 KB RAM is reserved.)||1.2||μA|
|Ideepsleep2||Deep sleep mode 2 (No RAM is reserved.)||0.4||μA|
|Frequency band||2.4GHz ISM band|
|Wireless standard||BLE 4.2/5.0|
|Data transmission rate||1Mbps，2Mbps|
|Antenna type||Onboard PCB 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)||-||2500||-||KHz|
|20 dB modulation signal bandwidth (2 Mbit/s)||-||1400||-||KHz|
|Parameter||Minimum Value||Typical Value||Maximum Value||Unit|
|RX sensitivity 1Mbps||-||-94.5||-||dBm|
|RX sensitivity 2Mbps||-||-91||-||dBm|
|Frequency offset 1Mbps||-250||-||+300||KHz|
|Frequency offset 2Mbps||-300||-||+200||KHz|
|Co-channel interference suppression||-||-10||-||dB|
BT3L uses an onboard PCB antenna, antenna gain is 2.5dBi.
To ensure optimal RF performance, it is recommended that the antenna be at least 15 mm away from other metal parts. If metal materials are wrapped around the antenna, the wireless signals will be reduced greatly, deteriorating the RF performance. Because BT3L is inserted to the PCB, sufficient space needs to be reserved for the antenna.
The default dimensional tolerance is ±0.35 mm, and the tolerance for some measurements is ±0.1 mm. If a customer has other requirements, clearly specify them in the datasheet after communication.
Perform SMT placement based on the following reflow oven temperature curve. The highest temperature is 245°C.
Refer to IPC/JEDEC standard；Peak Temperature:<245℃；Number of Times：≤2 times
|Product Model||MOQ（pcs）||Packing Method||Number of Modules in Each Reel Pack||Number of Reel Packs in Each Box|
|BT3L||3600||Carrier tape and reel packing||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 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:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.
This radio module must not installed to co-locate and operating 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 operating simultaneously with other radio.
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 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 have got a FCC ID：2ANDL-BT3L.The final end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-BT3L”
This device is intended only for OEM integrators under the following conditions:
1)The antenna must be installed such that 20cm is maintained between the antenna and users, and
2) The transmitter module may not be co-located with any other transmitter or antenna.
As long as 2 conditions above are met, further transmitter test 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 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.