Product Manual

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1 Product Overview

BT7L-G 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. BT7L-G also contains a low-power 32-bit multipoint control unit (MCU),

BLE 5.0 component, 2.4 GHz radio component, 4 MB flash memory, 48 KB static

random-access memory (SRAM), and nine multiplexing I/O interfaces.

1.1 Features

 Embedded low-power 32-bit MCU, which can also function as an application

processor

⚫ Dominant frequency: 48 MHz

 Working voltage: 1.8 V to 3.6 V (Under 1.8 V to 2.7 V, the module can start but the RF

performance is not guaranteed. Under 2.8 V to 3.6 V, the module performance is

normal.)

 Peripherals: nine pulse width modulation (PWM) interfaces

 BLE RF features

⚫ Compatible with BLE 5.0

⚫ Up to 2 Mbit/s RF data rate

⚫ TX power: +10 dBm

⚫ RX sensitivity: –94.5 dBm at BLE 1 Mbit/s

⚫ Embedded advanced encryption standard (AES) hardware encryption

⚫ Onboard PCB antenna with 2.5 dBi gain

⚫ Working temperature: –20°C to +105°C

Version: 1.0.0

Date: 2019-10-14

No.: 0000000001

Tuya BT7L-G BLE Module

Product

Manual

Global Intelligent Platform

Summary of content (20 pages)

PAGE 1
Global Intelligent Platform Tuya BT7L-G BLE Module Product Manual Version: 1.0.0 Date: 2019-10-14 No.: 0000000001 1 Product Overview BT7L-G 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. BT7L-G also contains a low-power 32-bit multipoint control unit (MCU), BLE 5.0 component, 2.
PAGE 2
BT7L-G Datasheet 1.
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BT7L-G Datasheet Change History No. Date 1 2019-10-14 Change Description This is the first release. 3 Version After Change 1.0.
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BT7L-G Datasheet Contents 1 Product Overview ............................................................................................................. 1 1.1 Features.................................................................................................................. 1 1.2 Applications ............................................................................................................ 2 Change History ..................................................................................
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BT7L-G Datasheet Figures Figure 1-1 BT7L-G architecture .......................................... Error! Bookmark not defined. Figure 2-1 BT7L-G pins ....................................................................................................... 6 Figure 6-1 BT7L-G mechanical dimensions ...................................................................... 13 Figure 6-2 HIC for BT7L-G ................................................................................................
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BT7L-G Datasheet 2 Module Interfaces 2.1 Dimensions and Footprint BT7L-G has two rows of pins with a 2 mm pin spacing. The BT7L-G dimensions are 15mm±0.35 (W)×16.5mm±0.35 (L)×2.85mm(H). The PCB thickness is 0.8±0.1 mm. Figure 2-1 shows the BT7L-G pins.
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BT7L-G Datasheet 2.2 Interface Pin Definition Table 2-1 BT7L-G interface pins Pin No.
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BT7L-G Datasheet Pin No. Symbol I/O Function Type 11 GND P 12 SWS Input Power supply reference ground pin Programming pin, which is connected to pin 5 on the IC 13 RST I/O 14 GND P Hardware reset pin, which is active at a low level and is connected to pin 25 on the IC Power supply reference ground pin Note: 1. P indicates power supply pins, I/O indicates input/output pins, and AI indicates analog input pins. 2.
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BT7L-G Datasheet 3 Electrical Parameters 3.1 Absolute Electrical Parameters Table 3-1 Absolute electrical parameters Parameter Minimum Maximum Value Value –65 150 °C –0.3 3.9 V Tamb = 25°C N/A 2 kV Tamb = 25°C N/A 0.5 kV Description Storage Ts temperature Power supply VCC voltage Static electricity voltage (human body model) Static electricity voltage (machine model) Unit 3.
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BT7L-G Datasheet Parameter Description Minimum Typical Maximum Value Value Value VSS N/A VCC x 0.1 V VCC x 0.9 N/A VCC V Unit high-level input I/O VOL low-level output I/O VOH high-level output 3.3 Working Current Table 3-3 Current during constant transmission and receiving Symbol Itx Typical Description Value Constant transmission, 0 dBm output power Unit 6.7 mA Irx Constant receiving 6.3 mA IDC Connected to a mesh network 7.4 mA 1.2 μA 0.
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BT7L-G Datasheet 4 RF Features 4.1 Basic RF Features Table 4-1 Basic RF features Parameter Frequency band Wireless standard Data transmission rate Antenna type Description 2.4 GHz ISM band BLE 5.0 1 Mbit/s or 2 Mbit/s Onboard PCB antenna 4.
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BT7L-G Datasheet 4.3 RF RX Sensitivity Table 4-3 RX sensitivity Parameter Minimum Typical Maximum Value Value Value N/A –94.5 N/A 1 Mbit/s RX sensitivity Unit dBm 2 Mbit/s N/A –91 N/A 1 Mbit/s –250 N/A +300 Frequency offset kHz 2 Mbit/s –300 N/A +200 N/A N/A –10 N/A Co-channel interference suppression dB 5 Antenna Information 5.1 Antenna Type BT7L-G uses an onboard PCB antenna. 5.
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BT7L-G Datasheet 6 Packaging Information and Production Instructions 6.1 Mechanical Dimensions Figure 6-1 BT7L-G mechanical dimensions Note: 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.
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BT7L-G Datasheet 6.2 Production Instructions 1. Use an SMT placement machine to mount components to the stamp hole module that Tuya produces within 24 hours after the module is unpacked and the firmware is burned. If not, vacuum pack the module again. Bake the module before mounting components to the module. (1) SMT placement equipment i. Reflow soldering machine ii. Automated optical inspection (AOI) equipment iii. Nozzle with a 6 mm to 8 mm diameter (2) Baking equipment i. Cabinet oven ii.
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BT7L-G Datasheet 3. Bake a module based on HIC status as follows when you unpack the module package: (1) If the 30%, 40%, and 50% circles are blue, bake the module for 2 consecutive hours. (2) If the 30% circle is pink, bake the module for 4 consecutive hours. (3) If the 30% and 40% circles are pink, bake the module for 6 consecutive hours. (4) If the 30%, 40%, and 50% circles are pink, bake the module for 12 consecutive hours. 4.
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BT7L-G Datasheet Figure 6-3 Oven temperature curve 16
PAGE 17
BT7L-G Datasheet 6.
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BT7L-G Datasheet 7 MOQ and Packing Information MOQ and Packing Information Product Model BT7L-G MOQ (PCS) 3600 Packing Number of Number of Reel Method Modules in Packs in Each Each Reel Pack Box 900 4 Carrier tape and reel packing 8 Appendix: Statement 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.
PAGE 19
BT7L-G Datasheet 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: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver.
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BT7L-G Datasheet Declaration of Conformity European notice Hereby, Hangzhou Tuya Information Technology Co., Ltd. declares that this Wi-Fi module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EC. A copy of the Declaration of conformity can be found at https://www.tuya.com. EN 300 328 V2.1.1 EN 301 489-1 V2.1.1; EN 301 489-17 V3.1.