Power Saving Mode; Minimum Functionality Mode - SimCom SIM800H Hardware Design Manual

Table 6: Electronic characteristic of the RESET pin
Pin name
RESET
The reset scenarios are illustrated in the following figures.

4.3. Power Saving Mode

SIM800H has two power saving modes: Minimum functionality mode and sleep mode. AT command
"AT+CSCLK=1"can be used to set SIM800H into sleep mode. AT command "AT+CFUN=<fun>" can be used to
set SIM800H into minimum functionality. When SIM800H is in sleep mode and minimum functionality mode,
the current of module is lowest.
4.3.1.

Minimum Functionality Mode

There are three functionality modes, which could be set by AT command "AT+CFUN=<fun>". The command
provides the choice of the functionality levels <fun>=0,1,4.
AT+CFUN=0： Minimum functionality.
AT+CFUN=1： Full functionality (default).
AT+CFUN=4： Flight mode (disable RF function).
Table 7: The current consumption of Minimum Functionality Mode (BS-PA-MFRMS=9)
<fun>
0
1
4
SIM800H_Hardware_Design_V1.01
Symbol Min
V 2.7
IH
V -
IL
Low power time 105
Figure 15: Reset timing sequence
Typ
2.8
-
Current consumption(mA) (sleep mode)
0.796
1.02
0.892
27
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Max Unit
2.9 V
0.6 V
- ms
2013-08-20