30068 Parallax Inc, 30068 Datasheet - Page 12

• Manufacturer Part Number: 30068
• Description: EMBEDDED BLUE TRANSCEIVER APPMOD
• Manufacturer: Parallax Inc

Specifications of 30068

• Frequency: 2.4GHz
• Data Rate - Maximum: 90kBaud
• Modulation Or Protocol: Bluetooth v1.1, Class 2
• Applications: Bluetooth v1.1
• Power - Output: -4dBm
• Sensitivity: -85dBm
• Voltage - Supply: 5 V ~ 10 V
• Current - Receiving: 80mA
• Current - Transmitting: 250mA
• Data Interface: PCB, Through Hole
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -20°C ~ 75°C
• Package / Case: Module
• Product: Microcontroller Accessories
• Operating Supply Voltage: 5 to 12 V
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q2239141

Bluetooth Overview
of the security model and they are exposed by the EmbeddedBlue device through the set
visible and set connectable commands. This is a very coarse level of control, but it is also
quite effective and can be used in combination with other security features.
The second and most complex element of Bluetooth security is access control. This type of
security is only relevant when the module is connectable and is designed to provide
protection in this case. The general idea is that remote devices must become trusted before
they will be allowed to connect and communicate with the EmbeddedBlue module. In order to
become trusted, a remote device must present a passkey that matches the stored local
passkey. This only needs to be done once, as both devices will remember their trusted status
and allow future connections with that specific device without exchanging passkeys again.
The EmbeddedBlue module uses the set security command to configure access control.
There are three possible settings for security, off, open, and closed. When security is turned
off, connection attempts will be allowed from all remote devices. When security is set to open,
connections are only allowed from trusted devices, but new devices can become trusted by
presenting the correct passkey. Forming a trusted relationship is carried out automatically in
this mode the first time that a remote device connects with the EmbeddedBlue module. When
security is set to closed, only connections from trusted devices will be allowed and no new
devices may become trusted. Closed security is the most restrictive setting and therefore the
most secure.
The last element of Bluetooth security is confidentiality. Once a link with a trusted device has
been established, it may be important to know that the data being transmitted cannot be
intercepted by a third party. All transmitted data can be encrypted by configuring the encrypt
setting to on. This only has an effect when security is set to either open or closed. The
EmbeddedBlue module supports 56-bit encryption by default, but 128-bit encryption is
available. Due to export restrictions to certain countries, firmware supporting 128-bit
encryption is only available with proper approval from A7 Engineering.
Page 6 ▪ EmbeddedBlue 500 User Manual