N1_Hardware_User_Guide
Copyright © Neoway Technology Co., Ltd
21
3.3 Hard Reset
The RESIN_N pin is used to reset the module. It triggers module reset when low-level pulse is applied at
this pin for 3 seconds. This pin is pulled up internally. Its typical high-level voltage is 1.8 V. Leave this pin
unconnected if it is not used. If a 2.8V/3.3V IO system is used, separate it by adding a triode. Refer to the
following design.
Figure 3-8
Reset controlled by button
R1
S1
RESIN_N
Figure 3-9
Reset circuit with triode separating
2V8/3V3
R 3
R 2
0V
VDD _ EXT
Q 1
RESIN_N
In a circuit shown in Figure 3-9, VDD_EXT=2.8V/3.3V/3.0V, R2=4.7K, R3=47K. Figure 3-10 shows the
reset sequence.
Figure 3-10
N1reset sequence
VBAT
OTHERS
3s
Not defined
RESIN_N
40s
