User Manual

SAMBA 55/56 VERSION 1.03
4.1.2 Power down
Normal shutdown after sending the AT^SMSO command. The Power Supply
ASIC (PSU-ASIC) disconnects the supply voltage from the base band part of
the circuit. Only a voltage regulator in the PSU-ASIC is active for powering
the RTC. Software is not active. The serial interfaces are not accessible.
Operating voltage (connected to GSM_BATT+) remains applied.
4.1.3 Alarm mode
Alarm mode restricted operation launched by RTC alert function while the
module is in POWER DOWN mode. Module will not be registered to GSM
network. Limited number of AT commands is accessible.
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