ME910C1 mPCIe HW Design Guide
1VV0301642 Rev. 2 Page 26 of 56 2022-01-14
W_DISABLE_N and PERST_N are in open drain configuration.
PERST_N needs an external pull up resistor to 3V3_AUX.
W_DISABLE_N have already an internal pull up 100K resistor to 3V3_AUX.
PIN DESCRIPTION
Active Low, unconditional shutdown I 20
Active Low, unconditional shutdown I 22
Table 14 W_DISABLE_N and PERST_N
Warning: The W_DISABLE and PERST_N signals are hardware
unconditional SHUTDOWN and should
not be used during normal
device shutdown operation as it does not detach the device from the
network and can harm the memory content.
It shall be kept as an emergency exit procedure.
To use W_DISABLE_N and PERST_N as Unconditional Hardware
Shutdown first Safety Prepare the module to it, by using the AT
commands: AT#SYSHALT. See AT command [2] [6].
Failure to follow
the recommended Power OFF and RESTART
procedure will void the warranty.
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