Hardware Design

[中文版]

Module Pin Diagram

Pin Description

Pin	Pin Name	Type	Pin Descriptions
31	UART_TXD	O	Serial Transmitter Data脚
32	UART_RXD	I	Serial Receiver Data脚
33	UART_CTS	I	UART Clear to Send(no connection request)脚
30	UART_RTS	O	UART Request to Send(no connection request)脚
23	RESET	I	Active-low reset input位
19	VDD	Power	Power supply voltage 3.3V, LDO power supply preferred
29	URXD	I	Program Download RXD (Receive Data Pin)
28	UTXD	O	Program Download TXD (Receive Data Pin)
21	PA5/LED1	O	Multiplexing: LED; Power-on: Slow blinking of the light; Connected: The light stays on
22	PA4/LED2	O	Multiplexing: Connection Status Indication; Disconnected: Low Level; Connected: High Level
35	ANT	ANT	Changing the 0 ohm resistance near the antenna, it is possible to connect a Bluetooth antenna externally

Hardware Design Note

• In simple test environment, the module can be used for basic testing and operation by simply connecting VDD, GND, UART_RX, and UART_TX.

• If the MCU needs to obtain the connection status of the Bluetooth module, it needs to be connected to the STATUS pin.

• After drawing the schematic diagram, please send it to Feasycom for review to avoid Bluetooth distance not achieving the best effect.