NL865H2 Hardware Design Guide
1VV0301616 Rev. 7
Page
29
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2020-04-20
Power On
The NL865H2-W1 module is automatically powering on itself when supplied.
NOTE:
To check if the device has powered on, the hardware line VAUX/PWRMON
should be monitored.
The power-off duration is required to be at least 5s before the module is
powered on.
Unconditional Restart
To unconditionally restart the NL865H2-W1, the pad RESET* must be tied low for at least
400 milliseconds and then released.
The hardware unconditional Restart must not be used during normal operation of the
device since it does not detach the device from the network. It shall be kept as an
emergency exit procedure to be done in the rare case that the device gets stuck waiting
for some network or SIM responses.
The unconditional hardware restart must always be implemented on the boards and the
software must use it as an emergency exit procedure.
5.3.1.
PIN DESCRIPTION
Signal
Function
I/O
Pad
RESET*
Unconditional Reset of the Module
I
55
There are two way to reset the module you can choose:
1
：
Through AT command of “AT+TRST”
2
：
Reset the module through RST pin
When the software stops response, you can pulled down RST 400ms to reset the
module's system.
