Hardware Design

[中文版]

PIN Definition Descriptions

Pin Diagram:

Pin Description：

Pin	Pin Name	Type	Pin Descriptions
1	UART_CTS	I/O	Serial Port Flow Control Pin
2	UART_RTS	I/O	Serial Port Flow Control Pin
3	AOI0/PIO0	I/O	ADC
4	UART_TX	O	Serial Port Data Pin
5	UART_RX	I	Serial Port Data Pin
6	RESET	I	Low-Level Reset
7	GND	GND	GND
8	STATUS	O	Low level : Bluetooth is disconnected. High level : Bluetooth is connected.
12	SWDIO	I/O	Programming Pin
13	SWDCLK	I	Programming Pin
15	VDD	Power	Power supply: 3.3V. It is recommended to use an LDO for power supply.
16	SPI_CLK	I/O	SPI_CLK PIN
17	SPI_CS	I/O	SPI_CS PIN
18	HOST_WAKE	O	HOST Controlled Pin: High level wakes up the HOST. Low level puts the HOST into sleepmode.
19	SPI_MISO	O	SPI_MISO PIN
20	BT_WAKE_HOST	O	High level wakes up the BT. Low level puts the BT into sleep mode.
25	ANT	ANT	Changing the 0-ohm resistor near the antenna allows for the connection of an external Bluetooth antenna.

Hardware Design Note

• The module can be used by connecting VDD/GND/BT_STA/UART_RX/UART_TX.

• If the MCU needs to obtain the connection status of the Bluetooth module, it is necessary to connect the BT_STA pin.

• If there is a low-power consumption requirement, please connect the BT_WAKE_HOST and HOST_WAKE_BT pins.

• After completing the schematic diagram, please send it to Feasycom for review to avoid the Bluetooth range failing to reach the optimal performance.