Technical information

Low Power Mode
20 G24-L Module Hardware Description November 15, 2008
Data on the Serial interface
While G24-L is temporarily awake in Idle mode, data may be transmitted on the serial interface.
In case data is being transmitted in any direction, G24-L will not return to low power mode. This
is regardless of the original wake-up reason or source. G24-L will remain awake while data is
transferred.
Only when the serial interface transfer is completed and the data has been processed, G24-L will
return to low power mode automatically, according to the ATS24 settings (see Figure 2-10).
Figure 2-10: Serial Interface Data
Permanent termination of Low Power Mode
The G24-L low power mode is enabled and disabled by the ATS24 command.
To permanently terminate the G24-L low power mode, the ATS24 = 0 command must be used.
Setting ATS24 = 0 disables the currently active low power mode and switches G24-L to Idle
mode.
G24-L will not return to low power mode until an ATS24 > 0 commands is set again.
This command can be sent only when the serial interface is active.
In case the serial interface is disabled, it must first be activated before sending this command. To
reactivate the serial interface, a temporary termination of the low power mode is required, as
described in “Temporary Termination of Low Power Mode” on page 19.
Following the temporary low power mode termination, the serial interface will activate and the
ATS24 = 0 command can be received by G24-L.