GL865-DUAL V3 Hardware User Guide
1vv0301018 Rev.5 – 2013-08-05
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 57 of 76
Mod. 0805 2011-07 Rev.2
11.10.
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!
11.11.
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.
11.12.
SIM Holder Implementation
Please refer to the related User Guide (SIM Holder Design Guides, 80000NT10001a).