User's Manual

N
720 Hardware User Guide
Copyright © Neoway Technology Co., Ltd 19
not use the PWRKEY pin, it must be left disconnected. The PON_TRIG pin can trigger the ON
status of the module by high level.
Power-off
Power off can be achieved through two methods, one is to use PWRKEY input pin; the other is to
use RESET pin.
1. Use PWRKEY pin. Low-level pulse input for 2 seconds can trigger the power-off status of the
module. This pin is pulled up internally. Its typical high-level voltage is 1.8 V. Leave this pin
disconnected if you do not use it.
2. Use RESET pin. Input more than 900ms low pulse when the module is at working status can
trigger the module power off.
If 2.8V / 3.3V IO system is used, it is recommended to use external triode isolation. For details,
refer to Section 2.3.4 RESET Pin Descriptions. Figure 2-10 shows the hard power-off sequence.
Figure 2-10 N720 power-off sequence
2.3.4 RESET
The RESET pin is used to reset and power off the module. It triggers module reset when you
input low-level pulse less than 900ms and the module will power off when input low-level pulse
more than 900ms. (One second is recommended.). This pin is pulled up internally. Its typical