CB-OBS411X-04-0 ConnectBlue, CB-OBS411X-04-0 Datasheet - Page 40
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CB-OBS411X-04-0
Manufacturer Part Number
CB-OBS411X-04-0
Description
BLUETOOTH V2.1+EDR MODULE 4DBM
Manufacturer
ConnectBlue
Specifications of CB-OBS411X-04-0
Frequency
2.4GHz
Data Rate - Maximum
115.2kbps
Modulation Or Protocol
Bluetooth v2.1+EDR, Class 2 & 3
Applications
General Purpose
Power - Output
4dBm
Sensitivity
-84dBm
Voltage - Supply
3 V ~ 6 V
Current - Receiving
15.5mA
Current - Transmitting
25.1mA
Data Interface
Solder Pads, 2 x 20mm, 1 mm pitch
Antenna Connector
U.FL
Operating Temperature
-30°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Other names
809-1034
connectBlue
Copyright © 2010 connectBlue AB
Switch-0 is used for the external connect function. A secondary function is that the module will restore all factory settings if both the
Switch-1 and Switch-0 signals are low during start up. See the Serial Port Adapter AT Commands specification for more details.
Sometimes, over time, switch contacts can get an oxide layer. This may cause the closed switch resistance to become too high to sink
the signal to logic LOW because the signal is internally pulled-up (see
Figure 29.
Figure 28: A low resistance function switch used.
Figure 29: If the resistance in the switch is not guaranteed to be low enough, a safer design can be used.
The Switch-0 pin can be left unconnected if its functionality is not used.
The
If the reset signal is connected to an output signal it must be an open drain collector, see Figure 31.
The
10.2.3.4 Switch-0 Signal
10.2.4 Reset
pin can be connected to an external reset source, see Figure 30 for a switch example.
pin can be left unconnected if not used.
\
Input/Output signals
). A design that prevents this can be found in
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