Chengdu Ebyte Electronic Technology Co.,Ltd.
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co., Ltd.
4
Pin
Value
Function
1
5V
Jumper short connected with VCC
，
for power input
2
VCC
Power input
3
3.3V
Jumper short connected with VCC
，
for power input
4
GND
Ground
5
VCC
Power input
6
NC1
/
7
NC2
/
8
NC3
/
9
RXD
RXD
，
to connect TXD of module for test
10
TXD
TXD
，
to connect RXD of module for test
11
AUX
Check more from manual of E22 module
12
M1
Pin M1 for mode selection
，
suspending means“1”
，
when short
connected with GND, it is“0”
13
GND
Ground
，
often work with M1
14
M0
Pin M0 for mode selection
，
suspending means“1”
，
when short
connected with GND, it is“0”
15
GND
Ground
，
often work with M0
2. Quick Start
2.1. Test Preparation
2.1.1. Install driver
Download driver program
from Ebyte website
，
double click to install. The driver program supports 32/64
bit Windows 10/8.1/8/7/VISTA/XP
，
SERVER2016/2012/2008/2003
，
2000/ME/98
，
with software digital signature authentication
，
good for USB to 3-wire and 9-wire serial port connection.
2.1.2. Connect to hardware
Prepare power adaptor
、
Micro USB cable
、
antenna
、
power supply
，
connect them to test board E43-900TB-01, open
corresponding serial port.
