Hangzhou Tuya Information Technology BT7L User Manual

1 Product Overview

BT7L 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 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 +85°C

Version: 1.0.0

Date: 2019-10-14

No.: 0000000001

Tuya BT7L BLE Module

Product

Manual

Global Intelligent Platform

BT7L Datasheet

2

1.2 Applications

 Smart LED lights
 Smart households
 Smart low-power sensors

BT7L Datasheet

3

Change History

No.

Date

Change Description

Version After

Change

1

2019-10-14

This is the first release.

1.0.0

BT7L Datasheet

4

Contents

1 Product Overview ............................................................................................................. 1

1.1 Features.................................................................................................................. 1

1.2 Applications ............................................................................................................ 2

Change History .................................................................................................................... 3

2 Module Interfaces ............................................................................................................. 6

2.1 Dimensions and Footprint ...................................................................................... 6

2.2 Interface Pin Definition ........................................................................................... 7

3 Electrical Parameters ........................................................................................................ 9

3.1 Absolute Electrical Parameters .............................................................................. 9

3.2 Electrical Conditions ............................................................................................... 9

3.3 Working Current ................................................................................................... 10

4 RF Features .................................................................................................................... 11

4.1 Basic RF Features ................................................................................................ 11

4.2 RF Output Power .................................................................................................. 11

4.3 RF RX Sensitivity.................................................................................................. 12

5 Antenna Information ........................................................................................................ 12

5.1 Antenna Type ........................................................................................................ 12

5.2 Antenna Interference Reduction ........................................................................... 12

6 Packaging Information and Production Instructions .......................................................... 13

6.1 Mechanical Dimensions ....................................................................................... 13

6.2 Production Instructions ......................................................................................... 14

6.3 Recommended Oven Temperature Curve ........................................................... 15

6.4 Storage Conditions ............................................................................................... 17

7 MOQ and Packing Information ....................................................................................... 18

8 Appendix: Statement ....................................................................................................... 18

BT7L Datasheet

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Figures

Figure 1-1 BT7L architecture .............................................. Error! Bookmark not defined.

Figure 2-1 BT7L pins ........................................................................................................... 6

Figure 6-1 BT7L mechanical dimensions .......................................................................... 13

Figure 6-2 HIC for BT7L .................................................................................................... 14

Figure 6-3 Oven temperature curve .................................................................................. 16

Tables

Table 2-1 BT7L interface pins .............................................................................................. 7

Table 3-1 Absolute electrical parameters ............................................................................ 9

Table 3-2 Normal electrical conditions ................................................................................. 9

Table 3-3 Current during constant transmission and receiving ......................................... 10

Table 4-1 Basic RF features .............................................................................................. 11

Table 4-2 Power during constant transmission ................................................................. 11

Table 4-3 RX sensitivity ..................................................................................................... 12

BT7L Datasheet

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2 Module Interfaces

2.1 Dimensions and Footprint

BT7L has two rows of pins with a 2 mm pin spacing.

The BT7L 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 pins.

Figure 2-1 BT7L pins