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SMART RADIO TRANSCEIVER

RF650

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Intelligent Modem RF Transceiver RF Data Rates to 100 kbps Up to 250 metres Range Selectable ‘Narrowband’ RF Channels Crystal Controlled RF Design Supply Voltage 3.3V Serial Data Interface with Handshake Host Data Rates up to 38,400 Baud Very Stable Operating Frequency Low Profile Ceramic DIL Package Operates from –20 to +70 0CEvaluation Board for Rapid Development

Operating Modes

Applications

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Point to Point Broadcast One to Many Network Many to One Network

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Wireless Security Systems EPOS Terminals Sensor Data logging Remote Telemetry & Telecommand Remote Meter Reading

Description
The RF650 radio transceiver module provides a reliable wireless communications for the transfer of data atGaussian Frequency Shift Keying (GFSK), Manchester encoded, RF data rates of up to 100 kbps. Their unique features of narrow band operation and user channel selection combined with excellent interference rejection make them an ideal choice for next generation applications. The transceivers have the functions of a complete radio modem and simply require CMOS/TTL data at the transmit input and thecorresponding transceiver(s) output the same data. Preamble and CRC are automatically generated and added to the RF transmission. Operating within the 433MHz band the modules operate in user selectable channels. The RF650 can use any channel in 100kHz steps. The modules both use a crystal controlled design which provides narrow band performance which is far superior to other wideband ‘SAW’ baseddesigns. Possible applications include one-to-one and multi-node wireless links in applications including car and building security, EPOS, inventory tracking, remote industrial process monitoring and computer networking. Because of their small size and low power requirements, both modules are ideal for use in portable, batterypowered applications such as hand-held terminals.

Part Numbering
PartNumber RF650 RF650-868 RF650-EVAL Description Smart Radio Transceiver Module, 433MHz Smart Radio Transceiver Module, 868MHz Evaluation Host PCB for RF650 Module (Module not Included)

DS650-6 June ‘06

©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661

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SMART RADIO TRANSCEIVER
Table Of Contents
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RF650

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ModuleConnections................................................................................................................ 3 Operation ................................................................................................................................. 4 2.1 Operation Modes.............................................................................................................. 4 2.2 Serial Data Format........................................................................................................... 4 2.3 CTS timing ....................................................................................................................... 4 Configuration ........................................................................................................................... 5 3.1 SoftwareConfiguration .................................................................................................... 6 Application Information ............................................................................................................ 7 4.1 Application Schematic ...................................................................................................... 7 4.2 AntennaDesign................................................................................................................ 8 Technical Specifications .......................................................................................................... 9 5.1 Mechanical Detail ............................................................................................................. 9 Evaluation...