Chengdu Ebyte Electronic Technology Co.,Ltd
E104-BT53C3 Manual User
Copyright ©2012–2020
,Chengdu Ebyte Electronic Technology Co.,Ltd
8
7
PA01
SWCLK
Users don't need to care
8
PA02
SWDIO
Users don't need to care
9
PA03
I/0
GPIO
10
PA08
O
Indicates the connection status of the slave (including the Beacon
role)
Pin outputs low after successful connection
Outputs high when the connection is disconnected
11
PA07
0
Indicates host connection status
Output low when connection is successful
Output high when disconnected
12
PA06
RTS
(Standard hardware flow control Require To Send) Module output
signal, when it is high
indicates that the module serial port is busy and the MCU is not
allowed to send data to the module serial port; when it is low,
data can be sent to the module.
13
PA05
CTS
(Standard Hardware Flow Control Clear To Send) Module input signal,
when high, indicates that the MCU serial port is busy and the module
will not send data to the MCU serial port.
indicates that the MCU serial port is busy and the module will not
send data to the MCU serial port; when it is low, data can be sent
to the MCU.
14
PA04
RESTORE
Internal pull-up. After a falling edge and then holding low for
at least 5 seconds, all parameters are restored to factory settings
and the module is automatically restarted
15
VCC
I
Positive power supply, 1.71~3.8V, 3.3V recommended
16
PD03
I/0
GPIO
17
PD02
I/0
GPIO
18
PC00
I/0
GPIO
19
PC01
I/0
GPIO
20
PC02
I/0
GPIO
21
PC03
I/0
GPIO
22
PC04
I/0
GPIO
23
PC05
I/0
GPIO
24
PC06
I/0
GPIO
25
PC07
I/0
GPIO
26
RESET
--
Module reset pin, active low, internal pull-up
27
GND
--
Module Ground
28
GND
--
Module Ground