v57ali
Newbie level 5
![Newbie level 5](/styles/images/ranks/blevel2.gif)
"Sleep mode (Slow Clocking mode)
Enter sleep mode
- at+csclk=1 and keep DTR high
Wakeup from sleep mode
- Pull DTR low
- Receive an SMS or incoming call
How I could know that the SIM900 module is entered to the SLEEP mode?
As I know the power consumption in SLEEP mode is 2.5mA, but when I enter at+csclk=1 and keep DTR high the power consumption is not decreasing.
May be I am not taking into consideration something?
Could anybody help me to enter SIM900 in SLEEP mode?
Enter sleep mode
- at+csclk=1 and keep DTR high
Wakeup from sleep mode
- Pull DTR low
- Receive an SMS or incoming call
How I could know that the SIM900 module is entered to the SLEEP mode?
As I know the power consumption in SLEEP mode is 2.5mA, but when I enter at+csclk=1 and keep DTR high the power consumption is not decreasing.
May be I am not taking into consideration something?
Could anybody help me to enter SIM900 in SLEEP mode?