![Telit Wireless Solutions ME310G1 Скачать руководство пользователя страница 40](http://html.mh-extra.com/html/telit-wireless-solutions/me310g1/me310g1_hw-design-manual_1083706040.webp)
ME310G1 Hardware Design Guide
1VV0301588 Rev. 16
Page 40 of 95
2021-10-27
Not Subject to NDA
5.5
Wake up From Deep Sleep Mode
The ME310G1 module supports Power Saving Mode (PSM) functionality defined in 3GPP
release 12. When the Periodic Update Timer expires, the module shuts down until the
next scheduled wake-up. Host-controlled asynchronous events can wake up the module
from deep sleep mode by asserting the ON_OFF*/WAKE* pin LOW for at least 5 seconds.
The host can detect deep sleep mode by pulling the PWRMON pin if PSM has been
previously configured.
5.6
Fast Shut Down
The procedure to power off the Telit ME310G1 module is explained in the
section. It normally takes more than a second to disconnect from the network and
properly close the internal filesystem. Fast Shut Down feature enables proper system
shutdown without any filesystem corruption. You can use this feature during an
unexpected supply voltage loss. Fast Shut Down feature enables you to reduce current
consumption and minimize the time-to-power off values.
Note: For more information Refer to ME310G1/ME910G1/ML865G1
AT Commands Reference Guide (Fast shut down - #FASTSHDN) to
set up a detailed AT command.
5.6.1
Fast Shut Down by Hardware
The Fast Shut Down by hardware may be triggered by configuring a GPIO. HI level to the
LOW level transition of a GPIO triggers the Fast Shut Down by hardware procedure.
Figure 9:Example circuit