Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
5
12
GND
-
Ground electrode, connect to power reference ground
13
GND
-
Ground electrode, connect to power reference ground
14
P0.02
-
0.9 V Digital power supply decoupling controller
15
P0.03
Input/Output
M CU GPIO
16
P0.04
Input/Output
M CU GPIO
17
P0.05
Input/Output
M CU GPIO
18
P0.06
Input/Output
M CU GPIO
19
P0.07
Input/Output
M CU GPIO
20
P0.08
Input/Output
M CU GPIO
21
P0.09
Input/Output
M CU GPIO
22
P0.10
Input/Output
M CU GPIO
23
P0.11
Input/Output
M CU GPIO
24
GND
Input/Output
M CU GPIO
25
GND
Input/Output
M CU GPIO
26
P0.12
Input/Output
M CU GPIO
27
P0.13
Input/Output
M CU GPIO
28
P0.14
Input/Output
M CU GPIO
29
P0.15
Input/Output
M CU GPIO
30
P0.16
Input/Output
M CU GPIO
31
SWDIO/
nRESET
Input
Serial line debugging and programming debugging / M CU reset, low level enable
32
SWDCLK
Input
Serial Line Debugging / Clock Input Debugging and Programming
33
P0.17
Input/Output
M CU GPIO
34
P0.18
Input/Output
M CU GPIO
35
P0.19
Input/Output
M CU GPIO
36
P0.20
Input/Output
M CU GPIO
★
For more details, please refer to
《
nRF51822Datasheet
》
in NORDIC ★
4.
Basic Operation
4.1 Hardware Design
It is recommended to use DC stabilized power supply to supply power to the module. The power supply ripple
coefficient is as small as possible, and the module needs to be reliably grounded.
Please pay attention to the correct connection of the positive and negative poles of the power supply. If the reverse
connection is connected, the module may be permanently damaged.
Please check the power supply to ensure that between the recommended supply voltage, if exceeding the maximu m,
the module will be permanently damaged.
Please check the stability of the power supply, the voltage can not be significantly frequent.
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
