Hardware Design

[中文版]

Module Pin Description

FSC-BT9101AI

Module Pin Diagram:

Pin Description:

Pin	Pin Name	Type	Descriptions
1	UART_TX	O	Serial Transmitter Data
2	UART_RX	I	Serial Receiver Data
3	UART_CTS	I	UART Clear to Send
4	UART_RTS	O	UART Request to Send
9	Tran/CMD	I/O	UART mode control pin, H=command mode ,L=throughput mode
10	Disc	I/O	Disconnect the connecting pin
11	RESET	I	Active-low reset input
12	VDD	Power	Power supply voltage 3.3V, LDO power supply preferred
13	GND	GND	GND
16	FW_URXD	I	Programming Pin
17	FW_UTXD	O	Programming Pin
32	Work	O	Bluetooth not connected to output square wave, Bluetooth connected to output high level
33	STATUS	O	Connection state, output. H=Connected , L=No connection
36	EXT_ANT	ANT	Changing the 0 ohm resistance near the antenna, it is possible to connect a Bluetooth antenna externally

Note：

To use the PIN9 and PIN10 control modules AT+PIOCFG command is required to enable the function

FSC-BT9104DI

Module Pin Diagram:

Pin Description:

Pin	Pin Name	Type	Pin Descriptions
1	GND	GND	Power Ground
2	PA8	I/O	Programmable I/O
3	Status	O	Connection state, output. H=Connected , L=No connection
5	FW_URXD	I	Programming Pin
6	FW_UTXD	O	Programming Pin
8	GND	GND	GND
9	VDD_3V3	VDD	Power supply voltage 3.3V, LDO power supply preferred
10	RESET	I	Active-low reset input
11	UART_RX	I	Serial Receiver Data
12	UART_TX	O	Serial Transmitter Data
13	UART_RTS	O	UART Request to Send
14	UART_CTS	I	UART Clear to Send
15	GND	GND	GND
16	EXT_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.