Neoway N723-EA - Pwrkey; Figure 5-6 Reference Design of Startup, Shutdown, and Reset Controlled by a Button; Figure 5-7 Reference Design of Startup, Shutdown, and Reset Controlled by an MCU

N723-EA Hardware User Guide
Chapter 5 Application Interfaces
Copyright © Neoway Technology Co., Ltd. All rights reserved.
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The following figure shows the reference design of startup controlled by the PWRKEY_N pin:
Figure 5-6 Reference design of startup, shutdown, and reset controlled by a button
PWRKEY_N
N723-EA
Module
1kΩ
R2
TVS
D1
50kΩ
VBAT
R1
S1
0.1μF
C1
Figure 5-7 Reference design of startup, shutdown, and reset controlled by an MCU
PWRKEY_N
N723-EA
Module
50kΩ
VBAT
R1
4.7kΩ
R3
47kΩ
R4
Q1
MCU_GPIO
1kΩ
R2
0.1μF
C1
TVS
D1
Do NOT connect an external resistor (R2) with large resistance in series to the PWRKEY_N pin. Otherwise, the
module cannot be started since the PWRKEY_N is at a high level all the time.
5.2.2 PWRKEY
PWRKEY is a high-level control startup pin; pull the PWRKEY pin up to VBAT, and the module can
start automatically once it is powered on.
If the design of automatic startup upon power-on is adopted, then shutdown can be performed only through
power-down (PWRKEY_N cannot be used to shut down the module at that time).