User Guide

ME910G1 HW Design Guide
1VV0301593 Rev.7 Page 34 of 98 2021-02-02
VAUX Power Output
A regulated power supply output is provided to supply small devices from the module,
like: level translators, audio codec, sensors, and others.
Pin R11 can be used also as PWRMON (module powered ON indication) function, because
is always active when the module is powered ON and cannot be set to LOW level by any
AT command.
Host can only detect deep sleep mode by monitoring of VAUX/PWRMON output pin, since
there is no pin dedicated to PSM status indicator.
The operating range characteristics of the supply are:
Item
Min
Typical
Max
Output voltage
1.78V
1.80V
1.82V
Output current
-
-
60mA
Output bypass capacitor
(inside the module)
1uF
Table 15: Operating range characteristics of the supply
RTC Supply
RTC is functional when ME910G1 is in PSM or OFF state and VBATT pin is supplied.
RTC settings are erased if VBATT supply is temporary disconnected.
Note: If power saving configuration is enabled by AT+CPSMS
Command, VAUX during deep sleep mode period is OFF