RFD21807 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

RFD21807

Compliance Approved 2.4 GHz RF Transceiver Modules with Built-In RFDP8 Application Protocol

Unspecified 

© Copyright, RF Digital

7/10/2011 1:40 AM

Patents Pending

RoHS CE • ESTI

RFD21733 • FCC • IC

RFD21743 • FCC

Approved & Certified

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Tel: 949.610.0008 • www.RFdigital.com

Fast Answers: support@rfdigital.com

RFDP8

RF Module

RFD21733

RFD21735

RFD21737

RFD21738

RFD21739

RFDP8

RFDANT

RFD21742

RFD21743

RFD21772

RFD21773

KEYFOBs

Eval Board Example with internal 47k resistor.

RS232 Level Shifter Interface

To connect to an RS232 port (9600-8N1), you must use a level shifter to shift the voltage levels from RS232

levels to 3V or 3.3V logic. There are many ICs which can perform that task all in one chip. For example the

MAX232, MAX202 or the ICL3321. If you want to connect to a PC you can use this method or you can use a

USB port and connect through a virtual communication port shown in the next section. You can use this same

interface when connecting to the Eval Boards. Very important, make sure you pull down the Logic IO signal to

ground through a 47k resistor if it is not in use, note it is bi-directional so you must use a pull down.

FTDI USB Virtual Communication Interface

FTDI manufactures a 3.3V Logic Serial Interface cable which plugs into a USB port and shows up as a COMM

port on your PC, through which you can connect to PC terminal programs like Hyper Terminal, RealTerm and

others.

You can purchase the FTDI cable from Digikey.com or other distributors. The manufacturer part number is TTL-

232R-3V3 and the Digikey Part Number is 768-1016-ND (picture shown below). For international orders, if you

want to save on shipping, you can ask for this item to be packed in with your order to RF Digital.

Free Applications Support • Email your application questions to support@rfdigital.com

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