CB-OBS411X-04-0 ConnectBlue, CB-OBS411X-04-0 Datasheet - Page 37

• 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
Figure 21: A red LED in a 5V host system. The status of the signal can also be used as input to a host controller.
The RED signal pin is also used to select Logic Level mode (instead of RS232) for connectBlue product with internal RS232 driver e.g.
cB-OEMSPA312. The mode functionality is not applicable on cB-OBS411 because there is no internal RS232 driver available. To be
compatible with these products check this signal in their Electrical and Mechanical datasheet.
The GREEN/Switch-1 signal is a multiplexed signal:
The signal is internally pulled-up (see
default values.
If a LED is used and a switch is required to be able to restore the settings, a high impendence buffer need to prevent the signal from
being pulled-up via the LED. See Figure 22-23 and the
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 27.
Figure 22: Switch-1 used together with a green LED in a 3.3V host system. The status of the signal can also be used as input to
a host controller. Notice the 1kOhm serial resistor.
10.2.3.3 GREEN/Switch-1 signal
GREEN - Logic green LED signal (see the
time can be up to 2 seconds (see the Serial Port Adapter AT Commands specification).
Switch-1 - The module reads the status of the signal at startup to decide if the serial interface settings shall be restored (LOW).
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. The input signal must be stable for the first 500ms after startup (after
reset/power on reset).
NOTE
The internal pull-up is changed compared to previous product generations from connectBlue. See the
Bluetooth cB-OEMSPA3xx to cB-OBS4xx products
Input/Output signals
Operating status
Logic Levels
) to the internal voltage supply (see
section for more information.
section). Becomes valid after the module has started up. The startup
section for buffer selection.
Input/Output signals
). A design that prevents this can be found in
Power supply
) for NOT restoring settings to
Migrating from
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