Specifications

Wireless CPU
®
Q24 Series
Interfaces
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prior written agreement.
WM_PGM_Q24NG_PTS_001-005 November 20, 2007
3.2.3 Power Consumption
The Wireless CPU
®
Q24 Series support different power consumption modes:
Working modes Comments
OFF mode The Wireless CPU
®
is in OFF mode.
ALARM mode The Wireless CPU
®
is in OFF mode with RTC block running,
when an ALARM occurs, the Wireless CPU
®
wakes-up
automatically.
FAST idle mode The Wireless CPU
®
is synchronized with an RF GSM/GPRS
network.
The internal 26 MHz of the Wireless CPU
®
is constantly active.
SLOW idle mode The Wireless CPU
®
is synchronized with an RF GSM/GPRS tester.
The internal 26 MHz of the Wireless CPU
®
is not constantly
active.
FAST Standby
mode
The SIM and Radio interface are deactivated via AT command or
Open AT
®
API:
-The embedded application is running
-The serial port remains active (AT commands are available).
The internal 26 MHz of the Wireless CPU
®
is constantly active.
SLOW Standby
mode
This mode is similar to the FAST Standby mode.
All the features are disabled (no GSM, no GPRS, no SIM and no
Serial port).
The internal 26 MHz of the Wireless CPU
®
is not constantly
active.
Communication
mode
A GSM/GPRS communication is established with a RF
GSM/GPRS network.
The power consumption depends on the configuration used. It is for this reason that
the following power consumption values are given for each modes, RF bands and
software used (AT or Open AT
®
).
All the following information is given, by assuming a 50 Ω
RF output.
Three VBATT values are used to measure the consumption, VBATT
MIN
(3.2V),
VBATT
MAX
(4.5V) and VBATT
TYP
(3.6V).
The average current is given for three VBATT values and peak current given is the
maximum current peak measured with three VBATT voltages.
For more information on power consumption measurement, hardware configuration,
SIM used, and software Dhrystone application, see the AT Command Interface Guide
or OS 6.57 [4] and Wireless CPU
®
Q24 Series Customer Design Guidelines [6].
When Wireless CPU
®
is in Alarm mode, no voltage must be applied to any pin of the
60-pin connector, except on the BAT-RTC (pin 56) for RTC operation or ON/~OFF (pin
6) to power-ON the Wireless CPU
®
.