Technical Specifications
Pin out
The eb505 module features two 10x2 20 pin connectors with 0.1” spacing. Currently, ten of
the pins are in use (eight when flow control is set to none). The other pins are reserved for
future use.
Pin Function
Type
Description
Usage
CN1 - 2
GND
Ground
Required
CN1 - 4
TX
TTL
Serial Transmit line from eb505; TTL
Required
CN1 - 6
RX
TTL
Serial Receive line to eb505
Required
CN1 - 8
Status
TTL
Bluetooth connection status
(0 = not connected, 1 = connected)
Required
CN1 - 10 Mode
TTL
Command/data mode toggle
(0 = command, 1 = data)
Required
CN1 - 12 RTS
TTL
Request-to-Send used for hardware flow
control (0 = not signaled, 1 = signaled)
Optional
CN1 - 14 CTS
TTL
Clear-to-Send used for hardware flow control
(0 = not signaled, 1 = signaled)
Optional
CN1 - 18 On/Off
TTL
Powers the eb505 up or down (0 = off, 1 = on)
weak internal pull-up
Required
CN1 - 20 VCC
Power
Required
CN2 – 19 GND
Ground
Required
Table 4: eb505 Pin out Description
EmbeddedBlue 505 User Manual
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Page 49
