Neoway N723-EA - Figure 5-8 Reference Design of Automatic Start Once Powered up; Figure 5-9 Startup Process (by Controlling PWRKEY_N)

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 pin:
Figure 5-8 Reference design of automatic start once powered up
47kΩ
R2
PWRKEY
N723-EA
Module
4.7kΩ
R1
VBAT
0.1μF
C1
D1
TVS
Startup process
When the module is in shut-down state, it is recommended that inputting a low-level pulse to PWRKEY_N less
than 3s can start the module.
The following figure shows the startup process:
Figure 5-9 Startup process (by controlling PWRKEY_N)
PWRKEY_N
≥10s
VBAT
UART
0.5s<T<3s
Active
Inactive
VDD_1P8
≥17ms