CB-OBS433X-02-0 ConnectBlue, CB-OBS433X-02-0 Datasheet - Page 36

• Manufacturer Part Number: CB-OBS433X-02-0
• Description: SERIAL PORT ADAPTER U.FL
• Manufacturer: ConnectBlue

Specifications of CB-OBS433X-02-0

• Frequency: 2.402GHz ~ 2.48GHz
• Modulation Or Protocol: Bluetoothv2.1+EDR
• Applications: General Purpose
• Power - Output: 17dBm
• Sensitivity: -94dBm
• Voltage - Supply: 3.3 V ~ 6 V
• Current - Receiving: 200mA
• Current - Transmitting: 200mA
• Data Interface: Connector, 2 x 10 Header, 2 mm Pitch
• Antenna Connector: U.FL
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 809-1039

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Copyright © 2010 connectBlue AB
Figure 19: A Low pass filter and a 74HC08 suppresses the flashes when the module is sending and receiving data. The Blue
LED can be removed if not required. The values are not suitable in all applications and need to be verified in a specific
application.
The RED/Mode signal is a multiplexed signal:
The signal is internally pulled-up for RS232 as default.
If a LED is used in UART logic level mode a high impendence buffer is required to prevent the signal from being pulled-up via the LED. A
74HC08 logic gate can be used in a 3/3.3V system (see Figure 20) and a 74HCT08 logic gate in a 5V system (see Figure 21). Both gates
are available in a single gate package (74AHC1G08/74AHCT1G08).
Figure 20: UART logic level mode selected together with a red LED in a 3.3V host system. The status of the signal can also be
used as input to a host controller.
10.2.3.2 RED/Mode Signal
RED - Logic red LED signal. Becomes valid 700ms after start up.
Mode - The module reads the status of the signal during startup to decide if the serial interface shall be RS232 (HIGH) or logic
UART (LOW) levels. The input signal must be stable for the first 700ms after startup (after reset/power on reset).
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