Data Sheet

FSC-BT836B
Shenzhen Feasycom Technology Co.,LTD www.feasycom.com
25
PIO2
Bi-directional
Programmable input/output line
26
PIO3
Bi-directional
Programmable input/output line
27
PIO4
Bi-directional
Programmable input/output line
Alternative Function: BT Power Mode, low level in run
mode, it will be set to high level when fall asleep.
28
PIO5
Bi-directional
Programmable input/output line
29
PIO6
Bi-directional
Programmable input/output line
Alternative Function: I
2
C Serial Clock input/output
30
PIO7
Bi-directional
Programmable input/output line
Alternative Function:I
2
C Serial Data input/output
31
PIO8
Bi-directional
Programmable input/output line
32
PIO9
Bi-directional
Programmable input/output line
Alternative Function: LED(Default)
33
PIO10
Bi-directional
Programmable input/output line
Alternative Function: BT Status(Default)
34
PIO11
Bi-directional
Programmable input/output line
35
GND
VSS
Power Ground
36
EXT_ANT
RF signal output
By default, this PIN is an empty feet. This PIN can connect
to an external antenna to improve the Bluetooth signal
coverage.
If you need to use an external antenna, by modifying the
module on the 0R resistance to block out the on-board
antenna; Or contact Feasycom for modification.
Table 2
5. Interface Characteristics
5.1 UART Interface
Four signals are used to implement the UART function. When FSC-BT836B is connected to
another digital device, UART_RX and UART_TX transfer data between the two devices. The
remaining two signals, UART_CTS and UART_RTS, can be used to implement RS232
hardware flow control where both are active low indicators.
The interface consists of four-line connection as described in below:
Signal name
Driving source
Description