RFD21733 Datasheet, PDF (23/76 Pages) List of Unclassifed Manufacturers – Compliance Approved 2.4 GHz RF Transceiver Modules with Built-In RFDP8 Application Protocol

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7/10/2011 1:40 AM
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RFD21733 • FCC • IC
RFD21743 • FCC
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RFDP8
RF Module
RFD21733
RFD21735
RFD21737
RFD21738
RFD21739
RFDP8
RFDANT
RFD21742
RFD21743
RFD21772
RFD21773
KEYFOBs
When using the FTDI USB Interface Cable TTL-232R-3V3, the connections to the RFD21737, RFD21738,
RFD21739, RFD21772, RFD21773 Eval Boards are very simple. You only need 4 wires and the Eval Board is
also powered from the USB port through the cable.
The 3V3 part of the part number for the cable means that the logic levels of the cable are 3.3V.
IMPORTANT:
The RED wire supplies +5V, and can ONLY be connected to the Eval Boards since the Eval Boards have an on-
board 3.3V regulator. You can NOT connect +5V to the Module or RFDANT directly. This is ONLY intended for
the Eval Board.
The 4 wires you need from the cable are:
RED is +5V
BLACK is GROUND
YELLOW is TXD Data Input to the PC USB Port.
ORANGE is RXD Data Output from the PC USB Port.
FTDI Cable to RFD Eval Boards:
RED – connect to RFD Eval Board Pin 2 and Pin 3 (Pin 2 is power on. Short pin 2 and pin 3.).
BLACK – connect to RFD Eval Board Pin 1.
YELLOW – connect to RFD Eval Board Pin 11, which is the RXD Data Output of the Eval Board.
ORANGE – connect to RFD Eval Board Pin 12, which is the TXD Data Input of the Eval Board.
FTDI TTL-232R-3V3 USB Cable
wired to RFD Eval Board
FTDI TTL-232R-3V3 USB Cable
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