Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co., Ltd
3
24
TXD0
E103-W04-TXD
Connect E103-W04
25
RXD
E103-W04-RXD
Connect E103-W04
26
NC
E103-W04-NC
Connect E103-W04
27
RELOAD
E103-W04B-RESTORE
Connect E103-W04B
28
IN
E103-W04B-NC
Connect E103-W04B
29
NC
E103-W04B-NC
Connect E103-W04B
30
SWDIO
E103-W04B-NC
Connect E103-W04B
31
SWSLK
E103-W04B-NC
Connect E103-W04B
32
NC
E103-W04B-NC
Connect E103-W04B
33
NC
E103-W04B-NC
Connect E103-W04B
34
3.3V
E103-W04B-VCC
Connect E103-W04B
35
RELOAD
keystroke
Short press to restart, long press 5S device to restore to
factory
36
LINK
Light
37
STATE
Light
38
DATA
Light
39
PWR
Light
40
3.3V
3.3V
When switched on, the module can be powered on using
USB
41
RELOAD
RELOAD
After switching, it can be restored directly to the factory
by pressing the button
42
LINK
LINK
The on-board LED light
can be used directly when
switched on
43
RXD
RXD
Once turned on, the on-board USB to TTL
can be used
directly
44
TXD
TXD
Once turned on, the on-board USB to TTL
can be used
directly
45
STATE
STATE
The on-board STATE lamp
can be used directly after
switching
46
DATA
DATA
The on-board DATA lamp
can be used directly when
switched on
47
PWR
PWR
The on-board PWR lamp
can be used directly after
switching
48
NC
E103-W04-NC
Connect E103-W04
49
NC
E103-W04-NC
Connect E103-W04
50
BOOT0
E103-W04-NC
Connect E103-W04
51
BOOT1
E103-W04-NC
Connect E103-W04
52
A3
E103-W04-NC
Connect E103-W04
53
A2
E103-W04-NC
Connect E103-W04
Note: For specific function instructions, please refer to the user manual of E103-W04/E103-W04B.
Notes:1. NC feet dangle.
