Chengdu Ebyte Electronic Technology Co.,Ltd.
NT1-B_User_Manual
Copyright ©2012–2022,Chengdu Ebyte Electronic Technology Co.,Ltd.
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3.2 Interface and Indicator Description
No.
Pins
Function
Instruction
1,2,3,4,13
NC
Reserve
This pin is left floating by default
5,7
GND
Ground
Common ground end, power negative input.
6
VCC
Power
Power forward input, support 3to5.5V input.
8
RX_LED
Serial input
feedback
Serial receiver indicator output, default output high, low output
when data input, continuous data output cycle 80ms,low 20ms
square wave signal.
9
TX_LED
Serial output
feedback
Serial send indicator output, default output high, low output
when data output, continuous data output cycle 80ms,low 20ms
square wave signal.
10
IO_RST
Factory
setting pins
Recover factory pin, need external reset button, low level
effective.
11
LED1
Running
feedback
Run the LED, and after the module is initialized, the foot
outputs a 5hz square wave.
12
LED2
Link status
feedback
The network port link indicator output, the default output high
level, the output low level after the connection is successful
under the TCP protocol, and the default output low level under
the UDP protocol;
14
RST
External reset
input
External reset input, low active.
15
CTS
Flow control
pin
MODEM input signal for UART0, clear send.
