Chengdu Ebyte Electronic Technology Co., Ltd.
E73-2G4M04S1FX User manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
5
10
P0.30
Input/Output
MCU GPIO
11
P0.31
Input/Output
MCU GPIO
12
DEC4
1.3 V digital power decoupling regulator (see chip manual for details)
Input from DC/DC regulator, output from 1.3 V LDO
13
DCC
-
DC / DC regulator output (see chip manual for details)
14
DEC1
-
0.9 V digital power decoupling regulator (see chip manual for details)
15
GND
Input
Ground, connected to reference ground of power
16
VCC
Input
Power supply 1.8 ~ 3.6V DC
（
Note: The voltage higher 3.6V is forbidden
）
17
P0.02
Input/Output
MCU GPIO
18
P0.03
Input/Output
MCU GPIO
19
P0.04
Input/Output
MCU GPIO
20
P0.05
Input/Output
MCU GPIO
21
P0.06
Input/Output
MCU GPIO
22
P0.07
Input/Output
MCU GPIO
23
P0.08
Input/Output
MCU GPIO
24
P0.09
Input/Output
MCU GPIO
25
P0.10
Input/Output
MCU GPIO
26
P0.11
Input/Output
MCU GPIO
27
P0.12
Input/Output
MCU GPIO
28
P0.13
Input/Output
MCU GPIO
29
P0.14
Input/Output
MCU GPIO
30
P0.15
Input/Output
MCU GPIO
31
P0.16
Input/Output
MCU GPIO
32
P0.17
Input/Output
MCU GPIO
33
P0.18
Input/Output
MCU GPIO
34
P0.19
Input/Output
MCU GPIO
35
P0.20
Input/Output
MCU GPIO
36
P0.21
Input/Output/RST
MCU GPIO
37
SWDCLK
Input
Serial Line Debugging / Clock Input Debugging and Programming
38
SWDIO
Input
Serial line debugging and programming debugging
39
P0.22
Input/Output
MCU GPIO
40
P0.23
Input/Output
MCU GPIO
41
P0.24
Input/Output
MCU GPIO
42
GND
Input
Ground, connected to reference ground of power
43
GND
Input
Ground, connected to reference ground of power
