A24-HABUF-P5I Digi International/Maxstream, A24-HABUF-P5I Datasheet - Page 10
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A24-HABUF-P5I
Manufacturer Part Number
A24-HABUF-P5I
Description
2.4GHZ ANTENNA U.FL
Manufacturer
Digi International/Maxstream
Datasheet
1.A24-HASM-525.pdf
(69 pages)
Specifications of A24-HABUF-P5I
Antenna Type
Whip
Number Of Bands
1
Frequency
2.4GHz
Gain
2.1dBi
Termination
U.FL
Mounting Type
Bulkhead
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Vswr
-
Height (max)
-
Other names
A24-HABUF-P51
A24-HABUF-P51
Q3655966F
A24-HABUF-P51
Q3655966F
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
A24-HABUF-P5I
Manufacturer:
MXS
Quantity:
36
2. RF Module Operation
Serial Communications
UART Data Flow
Serial Data
The XBee®/XBee-PRO® RF Modules interface to a host device through a logic-level asynchronous
serial port. Through its serial port, the module can communicate with any logic and voltage com-
patible UART; or through a level translator to any serial device (For example: Through a Digi pro-
prietary RS-232 or USB interface board).
Devices that have a UART interface can connect directly to the pins of the RF module as shown in
the figure below.
Figure 2‐01. System Data Flow Diagram in a UART‐interfaced environment
Data enters the module UART through the DI pin (pin 3) as an asynchronous serial signal. The sig-
nal should idle high when no data is being transmitted.
Each data byte consists of a start bit (low), 8 data bits (least significant bit first) and a stop bit
(high). The following figure illustrates the serial bit pattern of data passing through the module.
Figure 2‐02. UART data packet 0x1F (decimal number ʺ31ʺ) as transmitted through the RF module
Serial communications depend on the two UARTs (the microcontroller's and the RF module's) to be
configured with compatible settings (baud rate, parity, start bits, stop bits, data bits).
The UART baud rate and parity settings on the XBee module can be configured with the BD and SB
commands, respectively. See the command table in Chapter 3 for details.
© 2009 Digi International Inc.
(Low‐asserted signals distinguished with horizontal line over signal name.)
Example Data Format is 8‐N‐1 (bits ‐ parity ‐ # of stop bits)
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