SIM8300G-M2 Hardware Design V1.01 Draft

SIM8300G-M2 Hardware Design V1.01
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be used to set the module to flight mode without removing the power
supply. In this case, the RF part of the module will not work, but the
serial port and USB are still available. The power consumption is lower
than normal mode.
Power off
Normally module will go into power off mode by sending the AT
command “AT+CPOF” or pull down the FULL_CARD_POWER_OFF#
pin. In this mode the power management unit shuts down the power
supply, and software is not active. The serial port and USB are not
available.
5.3.2 Sleep Mode*
In sleep mode, the current consumption of the module will be reduced to a very low level.
Several hardware and software conditions must be satisfied in order to let module enter into sleep mode:
1. UART condition
2. USB condition
3. Software condition
1. “*” means under development.
2. Before designing, pay attention to how to realize sleeping/waking function.
5.3.3 Minimum Functionality Mode and Flight Mode
Minimum functionality mode ceases a majority of functions of the module, in order to minimize the power
consumption. This mode is set by the AT command which provides a choice of 3 different functionality
levels.
●
AT+CFUN=0: Minimum functionality
●
AT+CFUN=1: Full functionality (Default)
●
AT+CFUN=4: Flight mode
If module has been set to minimum functionality mode, the RF (U)SIM card functions will be closed while
the serial port and USB are still available.
If module has been set to flight mode, the RF function will be closed while the (U)SIM card, the serial port
and USB are still available.
When module is in minimum functionality or flight mode, it can return to full functionality by the AT command
“AT+CFUN=1”.
NOTE