MicroRidge Systems RM2 2.4GHz Radio Module User Manual Micro RM24 Users Guide Ver 1 2 4

MicroRidge Systems, Inc. 2.4GHz Radio Module Micro RM24 Users Guide Ver 1 2 4

Users Manual

All rights reserved. No parts of this work may be reproduced in any form or by any means - graphic, electronic, ormechanical, including photocopying, recording, taping, or information storage and retrieval systems - without the writtenpermission of the publisher.Products that are referred to in this document may be either trademarks and/or registered trademarks of the respectiveowners. The publisher and the author make no claim to these trademarks.While every precaution has been taken in the preparation of this document, the publisher and the author assume noresponsibility for errors or omissions, or for damages resulting from the use of information contained in this document orfrom the use of programs and source code that may accompany it. In no event shall the publisher and the author be liablefor any loss of profit or any other commercial damage caused or alleged to have been caused directly or indirectly by thisdocument.Version: 1.2.4Printed: Friday, October 31, 2014 at 10:02 AM in Sunriver, Oregon.MicroRidge 2.4 GHz Radio ModuleCopyright © 2014 MicroRidge Systems, Inc.
IContentsCopyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Table of ContentsChapter 1 1...................................................................................................................................IntroductionChapter 2 3...................................................................................................................................FeaturesChapter 3 4...................................................................................................................................Releated DocumentsChapter 4 5...................................................................................................................................Specifications...................................................................................................................................Atmel Documentation 5...................................................................................................................................Dimensions 7...................................................................................................................................Pin Configuration 10...................................................................................................................................Soldering 12Chapter 5 13...................................................................................................................................Application Board DesignChapter 6 15...................................................................................................................................Ordering InformationChapter 7 16...................................................................................................................................Radio CertificationChapter 8 18...................................................................................................................................Contact MicroRidgeChapter 9 19...................................................................................................................................Revision History
Introduction 1Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.41IntroductionThe MICRO-RM2.4 Radio Module from MicroRidge Systems is a small wireless module basedon the Atmel ATmega2564RFR2 microcontroller. The ATmega2564RFR2 is a low-poweredCMOS 8-bit microcontroller based on the AVR enhanced RISC architecture combined with a highdata rate transceiver for the 2.4 GHz ISM (industrial, scientific and medical) band.The MICRO-RM2.4 contains an on-board chip antenna. The module contains radio certificationsfor FCC, IC and EU (CE). No additional RF testing is required as long as the application of theMICRO-RM2.4 follows the approved certifications.The small size of the MICRO-RM2.4 module allows it to be used in small and compact products. The module measures 12 x 20.75 x 3 mm (.472 x .817 x .118 inches). The module requires apower supply of 1.8 to 3.6 volts DC. This voltage range allows the module to be powered by asingle 3 volt coin cell or two 1.5 volt batteries.Radio Module ImagesThe photos below show the top and bottom views of the radio module. The 2 large gold padsshown in the bottom view are the ground pads discussed in the Dimensions section .Isometric View Top View Bottom View7
Introduction 2Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Basic Block DiagramA basic block diagram of the MICRO-RM2.4 Radio Module is shown below. Refer to the AtmelATmega644/1284/2564RFR2 documentation for block diagrams with greater detail.4
Features 3Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.42FeaturesThe features of the MICRO-RM2.4 Radio Module are numerous and allow the module to be usedin many low powered short range applications. The primary features of this module are asfollows:Ultra compact size: 12 x 20.75 x 3 mm (.472 x .817 x .118 inches)Built-in 32.768 kHz crystal for low power and deep sleep modesBuilt-in 16 MHz crystal for 2.4 GHz transceiver and AVR microcontrollerPower supply voltage of 1.8 to 3.6 VDCTypical power consumption:o0.75 A in sleep mode (transceiver in Sleep and AVR in Power Save/Down mode)o14.5 ma in TX mode at 3.5 dBmo12.5 ma in RX modeMemory resources:o256K bytes In-System Self-Programmable Flasho8K bytes EEPROMo32K bytes SRAMIEEE® 802.15.4 compliant transceiver2.4 GHz ISM bandTX/RX 128 byte frame bufferTX output power from -17 dBm to 3.5 dBmReceiver sensitivity = -100 dBm14 RF Channels (11 to 25, channel 14 is reserved for internal use)Serial bootloaderInterface connections:o30 I/O portso2 RS-232 serial portsoJTAG programming connectionoI2CHigh performance low power AVR® 8-bit microcontrollerROHS complainantExtensive documentation and software resources available on the Atmel web site
Releated Documents 4Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.43Releated DocumentsAdditional information is available about the MICRO-RM2.4 Radio Module components andsupporting software from the following sources:A complete description of the ATmega2564RFR2 microcontroller used in the module isavailable on the Atmel web site (www.atmel.com). The document describing thismicrocontroller is ATmega644/1284/2564RFR2 42073A-MCU Wireless.Atmel also has additional documentation available that may be helpful in developingwireless applications for the MICRO-RM2.4 module.The MicroRidge Wireless Communication Library is available to assist in the developmentof firmware for the MICRO-RM2.4 Radio Module. A per module license is required in orderto use this Communication Library. This library is only supported on the IAR EmbeddedWorkbench Ver 6.4 or later for the AVR microcontroller. Contact MicroRidge Systems formore information.18
Specifications 5Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.44SpecificationsThe specifications sections consists of 4 areas:Atmel Documentation This section contains 3 of the tables from the AtmelATmega644/1284/2564RFR2 documentation. The complete Atmeldocument is over 600 pages in length. In order to fully understandthe radio module and how to work with it, you must becomefamiliar with this Atmel document.Dimensions The dimensions for the MICRO-RM2.4 Radio Module, padlocations and bottom side ground pads are presented in thissection.Pin Configuration The pin connections available on the MICRO-RM2.4 RadioModule are listed in this section.Soldering A soldering profile is shown in this section.4.1 Atmel DocumentationFor the complete specifications for the Atmel ATmega2564RFR2 radio transceiver refer toATmega644/1284/2564RFR2 documentation . The information shown below is only a few ofthe multiple tables from the Atmel documentation. Refer to the Atmel documentation for the testconditions and references shown in the tables.General RF Specifications4
Specifications 6Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Transmitter characteristicsCurrent Consumptions Specifications
Specifications 7Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.44.2 DimensionsBoard DimensionsThe dimensions for the MICRO-RM2.4 Radio Module are given below. All of the dimensions arein mm. The thickness of the module from the bottom of the module to the top of the RF shield is3 mm. The pad spacing is 1 mm and the pad width is 0.7 mm.Board Dimensions (mm) and Solder Pad Placement
Specifications 8Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Solder Pad PlacementThe recommended placement of the solder pads on the application board is shown below. The2 large pads are ground pads and they are discussed in the Ground Pads. All dimensions are inmm.
Specifications 9Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Ground PadsThe bottom of the module contains 2 ground (GND) pads areas that can be used to help securethe module to the circuit board. In a rough environment, we have seen delamination problemswith this type of module board. When adhesive was used to help secure the module board tothe application circuit board, we no longer had any delamination problems between the moduleand application circuit boards. In the stuffing process, the board house can use an adhesive tohelp secure the wireless module to the application circuit board or solder the ground pads to theapplication circuit board..The 2 ground pads are available on the bottom side of the wireless module. These ground padsare shown in red and labeled A and B. These 2 pad areas are part of the bottom ground plane.Location of the Ground Pads on the Bottom of the Wireless ModuleThe size and location of the ground pads is shown in the following table.GroundPadSize Distance from Upper Left CornerWidth, mm Height, mm Horizontal, mm Vertical, mmA3.25 2.50 6.50 5.50B2.625 5.00 14.75 2.50
Specifications 10Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.44.3 Pin ConfigurationThe pin connections for the MICRO-RM2.4 Radio Module are show below. For a completedescription of each pin refer to the Atmel ATmega644/1284/2564RFR2 documentation.MICRO-RM2.4 Pin ConnectionsModulePinPinName Description1 GND Ground (connected to AVSS_RFP, AVSS_RFN, DVSS & AVSS)2RESET Reset input (active low). The radio module also contains a 100K pullupresistor connected between this pin and VCC.3PG1 Port PG14PD5 Port PD5 (alternate function XCK1)5PD4 Port PD4 (alternate function ICP1)6PD1 Port PD1 (alternate functions SDA & INT1)7PD0 Port PD0 (alternate functions SCL & INT0)8VCC 1.8 to 3.6 VDC (connected to DEVDD & EVDD)9PB5 Port PB5 (alternate functions OC1A & PCINT5)10 PD2 Port PD2 (alternate functions RXD1 & INT2)4
Specifications 11Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4ModulePinPinName Description11 PD3 Port PD3 (alternate functions TXD1 & INT3)12 PD6 Port PD6 (alternate function T1)13 PB0 Port PB0 (alternate functions SSN & PCINT0)14 VCC 1.8 to 3.6 VDC (connected to DEVDD & EVDD)15 PB4 Port PB4 (alternate functions OC2A & PCINT4)16 PB1 Port PB1 (alternate functions SCK & PCINT1)17 PB2 Port PB2 (alternate functions MOSI, PDI & PCINT2)18 PB3 Port PB3 (alternate functions MISO, PDO & PCINT3)19 PB6 Port PB6 (alternate functionsOC1B & PCINT6)20 PB7 Port PB7 (alternate functions OC0A, OC1C & PCINT7)21 PE0 Port PE0 (alternate functions RXD0 & PCINT8)22 PE1 Port PE1 (alternate function TXD0)23 PE2 Port PE2 (alternate functions XCK0 & AIN0)24 PE3 Port PE3 (alternate functions OC3A & AIN1)25 PE4 Port PE4 (alternate functions OC3B & INT4)26 PE5 Port PE5 (alternate functions OC3C & INT5)27 PE7 Port PE7 (alternate functions ICP3, INT7 & CLK)28 VCC 1.8 to 3.6 VDC (connected to DEVDD & EVDD)29 PF2 Port PF2 (alternate function ADC2)30 PF1 Port PF1 (alternate function ADC1)31 PF0 Port PF0 (alternate function ADC0)32 PF7 Port PF7 (alternate functions JTAG TDI & ADC7)33 PF6 Port PF6 (alternate functions JTAG TDO & ADC6)34 PF5 Port PF5 (alternate functions JTAG TMS & ADC5)35 PF4 Port PF4 (alternate functions JTAG TCK, PF3 & ADC3)36 GND Ground (connected to AVSS_RFP, AVSS_RFN, DVSS & AVSS)-- PD7 Port PD7. Do not use. This ports is used internally by the wirelessmodule.-- TST Connected to GND in the wireless module.-- CLKI Connected to GND in the wireless module.
Specifications 12Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4ModulePinPinName Description-- TOSC1 Connected to 32.768 KHz crystal in the wireless module.-- TOSC2 Connected to 32.768 KHz crystal in the wireless module.-- XTAL1 Connected to 16 MHz crystal in the wireless module.-- XTAL2 Connected to 16 MHz crystal in the wireless module.4.4 SolderingThe following J-STD-020C compliant soldering profile is recommended for the MICRO-RM2.4Radio Module. Since the FCC and IC IDs are etched into the RF shield, there is no concernabout heat form the soldering process damaging a label that contains this ID information.Profile Feature ValuesAverage ramp-up rate (217°C to peak) 3°C/s maxPreheat temperature 175°C ±25°C 180s maxTemperature maintained above 217°C 60s to 150sTime within 5°C of actual peak temperature 20s to 40sPeak temperature range 260°CRamp-down rate 6°C/s maxTime within 25°C to peak temperature 8 minutes
Application Board Design 13Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.45Application Board DesignNormally, chip antennas are more tolerant of the board and enclosure materials. However, therecommendations for the radio module placement on the application PCB still apply. The radiomodule should be placed along an edge of the application PCB as shown below.Module placed along topedge of PCB.Module placed along topedge of PCB.Module placed in centerportion of PCB.Not an acceptable design.Mounting InformationIn general, via holes and traces are should not be placed on the application PCB upper layer inthe area occupied by the radio module module. The exception to this is if you are soldering theground pads to the PCB board, you can use via holes and/or traces to connect the pads to theground. Be careful that you do not place any via holes or traces adjacent to non-groundcircuits. The ground connections along the edges of the radio module should be grounded by via holeslocated as close as possible to the ground connections on the radio module.Via PlacementThe board design should prevent propagation of microwave fields inside the board material. Electromagnetic waves of high frequency may penetrate the board thus making the edges of theboard radiate, which may distort the antenna pattern. To eliminate this effect, via holes should beplaced around the board's edges. A common rule of thumb is to make the via spacing less thanλ/20 at the maximum operating frequency. For the MICRO-RM2.4 Radio Module, the wavelengthat 2.4 GHz is 125 mm and the maximum via spacing would be 6.25 mm.9
Application Board Design 14Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Other RecommendationsMetal enclosure should not be used.Low profile enclosures might affect antenna antenna performance.Avoid placing high profile components next to antenna.Radio module should not be placed next to other electronics which might interfere with the2.4 GHz frequency band.
Ordering Information 15Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.46Ordering InformationContact MicroRidge Systems to order MICRO-RM2.4 Radio Modules. The packaging optionsof tray, and tape and reel are still being evaluated. There are also software options available forthe radio modules.18
Radio Certification 16Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.47Radio CertificationUnited States (FCC)This device complies with part 15 of the FCC rules. Operation is subject to the following twoconditions: (1) This device may not cause harmful interference, and (2) this device must acceptany interference received, including interference that may cause undesired operation. Anychanges or modifications not expressly approved by manufacturer could void the user’s authorityto operate the equipment. IMPORTANT! Any changes or modifications not expressly approved by the party responsible forcompliance could void the user’s authority to operate this equipment. 47 CFR 15.505For a Class B digital device or peripheral, the instructions furnished the user shall include thefollowing or similar statement, placed in a prominent location in the text of the manual:NOTE: This equipment has been tested and found to comply with the limits for a Class B digitaldevice, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonableprotection against harmful interference in a residential installation. This equipment generates,uses and can radiate radio frequency energy and, if not installed and used in accordance withthe instructions, may cause harmful interference to radio communications. However, there is noguarantee that interference will not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception, which can be determined by turningthe equipment off and on, the user is encouraged to try to correct the interference by one ormore of the following measures:Reorient or relocate the receiving antenna.Increase the separation between the equipment and receiver.Connect the equipment into an outlet on a circuit different from that to which the receiver isconnected.Consult the dealer or an experienced radio/ TV technician for help.The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is notvisible when the module is installed inside another device, then the outside of the device intowhich the module is installed must also display a label referring to the enclosed module. Thisexterior label can use wording such as the following:Contains FCC ID: 2ACNQRM2The MICRO-RN2.4 Radio Module has a Modular approval and does not need separate approvalfor this module when used on an application board.Industry Canada (IC)This device complies with Industry Canada licence-exempt RSS standard(s). Operation issubject to the following two conditions: (1) this device may not cause interference, and (2) thisdevice must accept any interference, including interference that may cause undesired operationof the device.
Radio Certification 17Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.4Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radioexempts de licence. L’exploitation est autorisée aux deux conditions suivantes: (1) l’appareil nedoit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout brouillageradioélectrique subi, meme si le brouillage est susceptible d’en compromettre le fonctionnement. IMPORTANT! Tous les changements ou modifications pas expressément approuvés par lapartie responsable de la conformité ont pu vider l’autorité de l’utilisateur pour actioner cetéquipment.This Class [B] digital apparatus complies with Canadian ICES-003.Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du CanadaThis modular transmitter must be labeled with its own IC ID. If the IC ID Certification Number isnot visible while installed inside another device, then the device should display the label on itreferring the enclosed module. In that case, the final end product must be labeled in a visiblearea with the following:Contains IC: 12298A-RM2The MICRO-RN2.4 Radio Module has a Modular approval and does not need separate approvalfor this module when used on an application board.European Union (ETSI)The MICRO-RN2.4 module has been certified for use in European Union countries. If thismodule is incorporated into a product, the manufacturer must ensure compliance of the finalproduct to the European harmonized EMC and low voltage/safety standards. A Declaration ofConformity must be issued for each of these standards and kept on file as described in Annex IIof the R&TTE Directive.Furthermore, the manufacturer must maintain a copy of the modules' documentation and ensurethe final product does not exceed the specified power ratings, antenna specifications, and/orinstallation requirements as specified in the user manual. If any of these specifications areexceeded in the final product, a submission must be made to a notified body for compliancetesting to all required standards.The 'CE' marking must be affixed to a visible location on the OEM product. The CE mark shallconsist of the initials "CE" taking the following form:The CE marking must have a height of at least 5 mm except where this is not possible onaccount of the nature of the apparatus.The CE marking must be affixed visibly, legibly, and indelibly.More detailed information about CE marking requirements you can find at "DIRECTIVE 1999/5/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL" on 9 March 1999 at section12.
Contact MicroRidge 18Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.48Contact MicroRidgeEmail:Support: support@microridge.comSales: sales@microridge.comInformation: info@microridge.comPhone:Support: 541.593.1656Sales: 541.593.3500Main office: 541.593.1656Fax: 541.593.5652Mailing Address:MicroRidge Systems, Inc.PO Box 3249Sunriver, OR 97707-0249Shipping Address:MicroRidge Systems, Inc.56888 Enterprise DriveSunriver, OR 97707Note: There is no mail delivery to this address. This address should only be used forpackage delivery services such as UPS, FedEx, etc.Web: www.MicroRidge-RM.com
Revision History 19Copyright © 2014 MicroRidge Systems, Inc.MicroRidge 2.4 GHz Radio ModuleVersion 1.2.49Revision HistoryDate Version Comments9-3-2014 1.0.1 Preliminary release of MICRO-RM2.4 User Manual9-12-2014 1.1.2 Minor revisions to preliminary manual.10-30-2014 1.2.3 Changed radio module images to reflect final FCC & ICcertification numbers.Revised text for FCC and IC in Radio Certification section.10-31-2014 1.2.4 Minor word additions to Radio Certification section.

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