Version 1.17 2011-09
20
2.3 Characteristics
The cB-0901 board is designed to be fully interchangeable. If the host product has space for
the board it is possible to choose freely between a cB-OEMSPA311i/x or cB-OEMSPA331i/x
device without any change of the host product. If you design your power supply for cB-
OEMSPA331i/x the modules will be fully interchangeable.
The cB-0901 module has a linear power supply, which means that the current is constant if
the voltage supply is changed. See Table 10.
For more information about low power modes see Serial Port Adapter AT commands Speci-
fication.
2.3.1 Power supply
NOTE: Read the safety notes in section 7.2 before using the modules.
2.3.1.1 cB-OEMSPA311i/x products
Table 7: Power supply
Symbol
Parameter
Value
Unit
VCC_3V3 Power supply (Un-
regulated*)
Min
3.0 VDC
Max
6.0 VDC
* The module is equipped with an internal linear voltage regulator.
Table 8: Current consumption
Symbol
Mode
Value
Unit
I
CC
@ VCC_3V3 = 3.3V
Not connected
Average
7.9 mA
Peak
48 mA
Not con-
nected, stop
mode ena-
bled
Not connectable Average
1.0 mA
Peak
1.2 mA
Connectable
Average
1.8 mA
Peak
48 mA
Connectable,
discoverable
Average
1.8 mA
Peak
48 mA
Connected Idle or Receiving Average
17 mA
Peak
55 mA
Transmitting
@115.2kbit/s
Average
22 mA
Peak
58 mA
Inquiry
Average
39 mA
Peak
70 mA
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