Shenzhen Coban Electronics Co. Ltd. CB900 Manuale Utente
GPRS IDLE
The module is attached to the GPRS network. Power
consumption depends on the network settings.
GPRS DATA
The module sends and receives data from the network.
Power consumption depends on the network settings
and GPRS configurations.
Reduced
operation
GSM SLEEP
In order to extend the battery life of hand held
devices, the module can enter into a sleep mode with
software command. The module will wake up from
the sleep mode if there are any activities.
AIRPLANE
The module disconnect from the network just like
SLEEP but keep the SIM active so that activity like
accessing the phone book in SIM is still possible.
Battery Charging
CHARGE
The module performs battery charging in parallel with
other operation
4.5. Analog to Digital Converter (ADC)
Electrical Characteristics
Figure 5: ADC input reference circuit
4.6. Power ON Control
This input pin is used to switch the module ON. A switch-ON interruption is triggered in the
module at the detection of a falling edge of this signal pin over a period of 250ms.
Note: The module should be properly switched OFF before all power supplies are removed. This
is to avoid any unforeseen corruption of internal data.
Parameters
Conditions
Min
Type
Max
Unit
Resolution
-
-
10
-
Bits
Reference voltage
-
-
2.8
-
V
Differential non-linearity
-
-2
-
2
LSB
Integral non-linearity
Best Fitting
-2
-
2
LSB
Input Range
-
0
2.8
V
Input Resistance
-
1
100
KΩ