CB-OBS411X-04-0 ConnectBlue, CB-OBS411X-04-0 Datasheet - Page 40

• 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

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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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