HW User Guide
1vv0301018 Rev. 15
Page
53
of
72
2019-01-07
SIMIN detect function
All the GPIO pins can be used as SIM DETECT input. The AT Command used to enable
the function is:
AT#SIMINCFG
Use the AT command AT#SIMDET=2 to enable the SIMIN detection
Use the AT command AT&W0 and AT&P0 to store the SIMIN detection in the common
profile.
For full details see AT Commands Reference Guide, 80000ST10025a.
NOTE:
Don’t use the SIM IN function on the same pin where the GPIO function is
enabled and vice versa!
RTC Bypass out
The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of
the digital part, allowing having only RTC going on when all the other parts of the device
are off.
To this power output a backup battery can be added in order to increase the RTC
autonomy during power off of the main battery (power supply). NO Devices must be
powered from this pin.
SIM Holder Implementation
Please refer to the related App Note (SIM Integration Design Guide Application Note,
80000NT10001a ).
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