Minimize Power Consumption; Sleep Mode; Minimum Functionality Mode; Current Consumption - SIM Tech SimCom SIM7100 Hardware Design

Minimum
functionality mode
5.3.2

Minimize Power Consumption

There are two modes, in which SIM7100 will achieve lower power consumption for power saving.
5.3.3

Sleep mode

In sleep mode, the current consumption of module will be reduced to the minimal level, and module can
still receive paging message and SMS.
Several hardware and software conditions must be satisfied together in order to let SIM7100 enter into
sleep mode:
1. UART condition
2. USB condition
3. Software condition
Note: Before designing, pay attention to how to realize sleeping/waking function and refer to Document
[22] for more details.
5.3.4

Minimum functionality mode

Minimum functionality mode ceases a majority function of module, thus minimizing the power
consumption. This mode is set by the AT command which provides a choice of the functionality levels.
AT+CFUN=0: Minimum functionality
●
AT+CFUN=1: Full functionality (Default)
●
AT+CFUN=4: Disable RF function of the module (Flight mode)
●
If SIM7100 has been set to minimum functionality mode, the module will firstly enter sleep mode, then
the RF function and SIM card function will be closed. In this case, the serial port is still accessible, but RF
function or SIM card will be unavailable. When SIM7100 is in minimum functionality or flight mode, it
can return to full functionality by the AT command "AT+CFUN=1".
5.4

Current Consumption

The current consumption in suspended mode and without USB connection is listed in the table below.
Here, "suspended mode" means that SIM7100 is connected to USB bus, but it does not transfer data.
SIM7100_Hardware Design_V1.01
uplink/downlink data rates and GPRS configuration (e.g.
used multi-slot settings).
AT command "AT+CFUN" can be used to set the module to a minimum
functionality mode without removing the power supply. In this mode, the RF
part of the module will not work or the USIM card will not be accessible, or
both RF part and USIM card will be closed, and the serial port is still
accessible. The power consumption in this mode is lower than normal mode.
Smart Machine Smart Decision
58
2015-01-20