Specifications

3.2.5 AT+CFUN
This AT-command is used to change the power state of the Wireless CPU.
See the AT-command manual for more details.
3.2.6 AT*E2RESET
This AT-command will de-register from network and do the normal shut-down
sequence, but instead of powering down jump to the reset vector.
See the AT-command manual for more details.
3.3 How to lower power consumption
The Wireless CPUs are capable of being set to low current consumption mode where
the average current consumption can be as low as 1.4mA. This mode is referred to as
“sleep mode”. The actual current consumed depends on the base station DRX-mode
setting, which cannot be controlled by the Wireless CPU.
The features that determine the “sleep mode”-setting are the communication
channels UART and USB. The reason for this is that they cannot operate unless the
main 13MHz clock is available. To get the power consumption down the Wireless CPU
must disable the 13MHz clock and instead run of the 32kHz RTC. This means that a
handshake method has to be used for the UART (see
GR/GS64 Series Application Note
- UART Sleep Protocol
), and USB has to support “suspend-resume”.
The USB feature is not supported in all SW-versions. Contact your local FAE if USB-
support is needed. USB will have its own Application Note. Ensure that the USB-
interface is disabled if is not used (AT*USB=0).
Power State Condition Current Unit
Power down VRTC open (no backup battery) <10 μA
Power down VRTC active (backup battery available) <1.6 mA
Sleep mode DRX 2 <3.5 mA
UART active, USB inactive (AT*USB=0) ~25 mA
Standby
UART active, USB active (AT*USB=1) ~35 mA
Gx64 APPLICATION NOTE
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Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
Power Management
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