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LE910Cx HW User Guide
Figure 8: Shutdown by Software Command
Note: To check whether the device has powered off, monitor the
PWRMON/SW_RDY hardware line. When PWRMON/SW_RDY goes
low, the device has powered off.
5.3.2.
Hardware Shutdown
To turn off the LE910Cx module, the ON_OFF_N pad must be asserted low for at least 2.5
seconds and then released. Use the same circuitry and timing for power-on.
When the ON/OFF# hold time is above 2.5 seconds, the LE910Cx enters the Finalization
state and eventually shuts down PWRMON/SW_RDY .
The duration of the Finalization state can differ according to the current module situation,
so a value cannot be defined.
Usually, it will take more than 15 seconds from sending a shutdown command until a
complete shutdown is achieved. The DTE host should monitor the status of
PWRMON/SW_RDY to observe the actual power-off.
Figure 9: Hardware Shutdown
1VV0301298 Rev. 33
Page 45 of 128
Not Subject to NDA
2021-06-29
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