Data Sheet

FSC-BT986 Datasheet
Shenzhen Feasycom Technology Co., Ltd www.feasycom.com
-8-
Alternative Function: USB_DM
11,27
RESET
I
External reset input: Active LOW.
Set this pin low reset to initial state
12
VDD_3V3
Vdd
Power supply voltage 3.3V
13
GND
Vss
Power Ground
14
NC
15
SWDIO
I/O
Debugging through the data line
16
SWCLK
I/O
Debugging through the clk line
17
NC
18
NC
19
NC
20
NC
21
GND
Vss
Power Ground
22
GND
Vss
Power Ground
25
NC
26
NC
28
NC
29,31
PIO2
Programmable input/output line
Alternative Function: I2C_SCL
30,33
PIO3
I/O
BT Status(Default)
Connected: High ; Not connected: low
Alternative Function: Programmable input/output line
Alternative Function: I2C_DAT
32
PIO4/LED
I/O
Programmable input/output line
Alternative Function: LED(Default)
Power On: Light Slow Shinning ; Connected: Steady Lighting.
35
GND
Vss
Power Ground
36
EXT_ANT
O
RF signal output .
If you need to use an external antenna, you can shield the onboard
antenna by modifying the module on the 0R resistor. Or contact
Feasycom to modify.
4. PHYSICAL INTERFACE
4.1 Power Supply
The transient response of the regulator is important. If the power rails of the module are supplied from an external
voltage source, the transient response of any regulator used should be 20μs or less. It is essential that the power rail
recovers quickly.