Custom BT-09 Android IOS HM-10 BLE For Bluetooth 4.0 CC2540 CC2541 Serial Wireless Module

5V power supply or 3.3V power supply serial port level is the same as the power supply voltage

Input voltage: 3.3V/5V requires only one set of power supplies.

Built-in level switching function.

If the 5.0V MCU is used to communicate with the Bluetooth module, the 5.0V power port is powered, and the RX TX logic level is 5V

If the 3.3V MCU is used to communicate with the Bluetooth module, the 3.3V power port is powered, and the RX TX logic level is 3.3V

RX, Bluetooth module serial port receiver and MCU TXD connection.

TX, Bluetooth module serial port transmitter and MCU RXD connection.

GND, ground power supply negative terminal

3.3V, 3.3V power supply

5V, power end 5V power supply