Contact Us
Log In

TYBT2-IPEX Module Datasheet

Last Updated on : 2022-10-14 07:35:39download

Product overview

TYBT2-IPEX is a Bluetooth Low Energy (LE) module designed by Hangzhou Tuya Technology Corporation. The Bluetooth LE Module consists of a highly integrated wireless Bluetooth chip TLSR8266 and some extra electric circuits that have been programmed with Bluetooth network protocol and plenty of software examples. TYBT2-IPEX includes a 32-bit CPU, Bluetooth LE/2.4G radio, 512K byte flash, 16k SRAM, and 9 multiplex IO pins.


  • Integrated low power consumption 32-bit CPU, also known as application processor
  • Basic frequency of the CPU can support 48 MHz
  • Supply voltage range: 1.9V to 3.6V
  • Peripherals: 5 × PWM, 1 × I2C, 1 × UART
  • Bluetooth RF features:
    • Compatible with Bluetooth 4.0
    • Transmitting data rate can go up to 2Mbps
    • TX transmitting power: +7dBm
    • RX receiving sensitivity: -92dBm
  • AES hardware encryption
  • External 2.4G Antenna
  • Operating temperature range: -20°C to 105°C

Main application fields

  • Intelligent LED

  • Intelligent household applications

  • Intelligent low-power consumption sensors

Dimensions and footprint


TTYBT2-IPEX has double sides of pins. The distance between each Pin is 1.5mm.

Size of TYBT2-IPEX: 15mm(W) × 15.2mm(L).

Figure 2 shows the dimensions of TYBT2-IPEX.

TYBT2-IPEX Module Datasheet)

Pin definition

Table 1 shows the general pin attributes of TYBT2-IPEX

​ Table 1. The typical pin definition of TYBT2-IPEX

Pin No. Name Type Description
1 SDA I/O I2C, data interface, internal pull-up 4.7k resistance
2 SCL I/O I2C, clock interface, internal pull-up 4.7k resistance
3 G I/O Normal IO pin, which can be used as PWM output pin, default for Green LED line
4 B I/O Normal IO pin, which can be used as PWM output pin, default for Blue LED line
5 WW I/O Normal IO pin, which can be used as PWM output pin, default for Warm White LED line
6 CW I/O Normal IO pin, which can be used as PWM output pin, default for Cold White LED line
7 R I/O Normal IO pin, which can be used as PWM output pin, default for Red LED line
8 3.3V P Supply voltage
9 TX I/O UART TX, which can be used as a normal IO pin
10 RX I/O UART RX, which can be used as a normal IO pin
11 GND P Ground
12 SW I/O Bluetooth chipset burning pin
13 RST I Reset pin for the module, internal pull-up 4.7k resistance
14 GND P Ground
  • P: Power supply pins. I/O: Digital input or output pins.
  • SW pin is ONLY used for burning firmware, Can NOT be used for other functions.
  • While Pin4 and Pin12 are used for I2C functions, external 4.7k pull-up resistances are necessary.
  • When the WW pin is outputting the PWM signal, It has an opposite phase comparing the PWM signal from the R/G/B/CW pins. If there’s any customization needed for PWM output, please contact our BD manager.

Electrical characteristics

Absolute maximum ratings

​ Table 2. Absolute maximum ratings

Parameter Description Min. Max. Unit
Ts Storage temperature -20 85 °C
VCC Supply voltage -0.3 3.9 V
Electrostatic release quantity (Human body model) TAMB-25°C - 2 KV
Electrostatic release quantity (Machine model) TAMB-25°C - 0.5 KV

Electrical conditions

​ Table 3.2 Electrical conditions

Parameter Description Min. Typical Max. Unit
Ta Temperature for Commercial grade -20 - 85 °C
VCC Supply voltage 2.5 3.3 3.6 V
VIL IO negative level input -0.3 - VCC*0.25 V
VIH IO positive level input VCC*0.75 - VCC V
VOL IO negative level output - - VCC*0.1 V
VoH IO positive level output VCC*0.8 - VCC V

Transmitting current consumptions

​ Table 3.3 TX current consumption

Parameter Mode Typical Unit
Itx Continuously transmitting, 0dBm power output 13 mA
Irx Continuously receiving 13 mA
IDC Normal working mode 80 μA

Radio specification

Basic radio frequency characteristics

​ Table 4.1 Basic radio frequency characteristics

Parameter Description
Working Frequency 2.4GHz ISM band
Radio standard Bluetooth LE 4.0
Data transmitting rate 1Mbps, 2Mbps
Type of Antenna External 2.4G Antenna

Transmitting power

​ Table 4.2 Transmitting power

Parameter Min. Typical Max. Unit
RF Average output power consumption 3.8 7 - dBm
20dB bandwidth - 1000 - KHz

Receiving sensitivity

​ Table 4.3 Receiving sensitivity

Parameter Rate Min. Typical Max. Unit
RX sensitivity 1Mbps -93 -92 -90 dBm
Frequency bias error - -300 - 300 KHz
Co-channel interference Restrain - - -7 - dB

Antenna information

Antenna type

TYBT2-IPEX requires an external 2.4GHz band antenna with an IPEX generation terminal on one end.

Reduce antenna interference

In order to have the best RF performance, it’s recommended to keep a minimum 15mm distance between the antenna part and the other metal pieces. Also, in order to minimize the attenuation of RF performance and to facilitate the free emission of RF signals, the antenna is preferably placed close to the edge, meanwhile, the antenna cannot be surrounded by metal objects or blocked by some high devices.
To ensure good isolation, when there are two or more antennas of the same frequency band, the distance between the antennas should be widened as much as possible, it is preferably greater than 5 cm.

Packaging and production guide

Mechanical dimensions

​ Figure 4. Dimensions of the module

TYBT2-IPEX Module Datasheet

Production guide

The storage for the delivered module should meet the following condition:

  • The anti-moisture bag should be kept in an environment with temperature < 30°C and humidity < 85% RH.
  • The expiration date is 6 months since the dry packaging products are sealed.


  • All the operators should wear an electrostatic ring in the whole process of production.
  • While operating, water and dirt should not have any contact with the modules.