Huawei ME906s LTE M.2 Hardware Manual page 26

HUAWEI ME906s LTE M.2 Module
Hardware Guide
Do not toggle RESET# during power on sequence, pulling RESET# low will extend
time for module startup. The recommended power on timing sequence is shown as
Figure 3-8 .
Figure 3-8 Recommended power on timing sequence
3.3V (battery
always on)
RESET#
Power_On_off

Power off sequence
Keep Power_On_Off logic low for more than 500 ms to shut off the module.
Figure 3-9 Recommended power off timing sequence (connect to battery)
3.3V (battery,
always on)
RESET#
Power_On_Off

Warm boot (restart) sequence
In the notebook/tablet when using the warm boot, the followed sequence is
recommended.
Issue 05 (2019-03-25)
t0
t0 ≥ 0ms
t1
t1 ≥ 500 ms
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Description of the Application Interfaces
Power on
Logic low or high-impedance (preferred)
Logic low or high-impedance (preferred)
Power off
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