User Guide

ME310G1 Hardware Design Guide
1VV0301588 Rev. 11 Page 39 of 91 2021-03-16
Warning: Unconditional Hardware SHUTDOWN by toggling VBATT
Power, must not be used during the normal shutdown operation of
the device since it does not detach the device from the network and
can damage the memory content. It shall be kept as an emergency
exit procedure.
INCORRECT SHUTDOWN Procedure can void the warranty.
Wake up from deep sleep mode
ME310G1 supports the Power Saving Mode (PSM) functionality defined in 3GPP Release
12. When the Periodic Update Timer expires, ME310G1 shuts down until the next
scheduled wake-up time. Asynchronous event controlled by host can wake up from deep
sleep mode by asserting ON_OFF*/WAKE* pin LOW for at least 5 seconds. Host can detect
deep sleep mode by polling PWRMON pin if PSM has been previously configured.
Fast shut down
The procedure to power off ME310G1 described in Section 5.3 normally takes more than
1 second to detach from network and make ME310G1 internal filesystem properly closed.
In case of unwanted supply voltage loss the system can be switched off without any risk
of filesystem data corruption by implementing Fast Shut Down feature.
Fast Shut Down feature permits to reduce the current consumption and the time-to-
poweroff to minimum values.
Note: Refer to ME310G1/ME910G1/ML865G1 AT Commands
Reference Guide (Fast shut down - #FASTSHDN) in order to set up
detailed AT command.