MRF24J40MC_CN.pdf

1、 2011 Microchip Technology Inc.PreliminaryDS75002AMRF24J40MC Data Sheet2.4 GHz IEEE Std.802.15.4 RF Transceiver Module with PA/LNA and External Antenna ConnectorDS75002A-page iiPreliminary 2011 Microchip Technology Inc.Information contained in this publication regarding device applications and the l

2、ike is provided only for your convenience and may be superseded by updates.It is your responsibility to ensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED,WRITTEN OR ORAL,STATUTORY OR OTHERWISE,RELATED T

3、O THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY,PERFORMANCE,MERCHANTABILITY OR FITNESS FOR PURPOSE.Microchip disclaims all liability arising from this information and its use.Use of Microchip devices in life support and/or safety applications is entirely at the buyers risk,and t

4、he buyer agrees to defend,indemnify and hold harmless Microchip from any and all damages,claims,suits,or expenses resulting from such use.No licenses are conveyed,implicitly or otherwise,under any Microchip intellectual property rights.TrademarksThe Microchip name and logo,the Microchip logo,dsPIC,K

5、EELOQ,KEELOQ logo,MPLAB,PIC,PICmicro,PICSTART,PIC32 logo,rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A.and other countries.FilterLab,Hampshire,HI-TECH C,Linear Active Thermistor,MXDEV,MXLAB,SEEVAL and The Embedded Control Solutions Company are registered

6、 trademarks of Microchip Technology Incorporated in the U.S.A.Analog-for-the-Digital Age,Application Maestro,CodeGuard,dsPICDEM,dsPICDEM.net,dsPICworks,dsSPEAK,ECAN,ECONOMONITOR,FanSense,HI-TIDE,In-Circuit Serial Programming,ICSP,Mindi,MiWi,MPASM,MPLAB Certified logo,MPLIB,MPLINK,mTouch,Octopus,Omni

7、scient Code Generation,PICC,PICC-18,PICDEM,PICDEM.net,PICkit,PICtail,REAL ICE,rfLAB,Select Mode,Total Endurance,TSHARC,UniWinDriver,WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A.and other countries.SQTP is a service mark of Microchip Technology Incorporated in t

8、he U.S.A.All other trademarks mentioned herein are property of their respective companies.2011,Microchip Technology Incorporated,Printed in the U.S.A.,All Rights Reserved.Printed on recycled paper.ISBN:978-1-61341-006-6Note the following details of the code protection feature on Microchip devices:Mi

9、crochip products meet the specification contained in their particular Microchip Data Sheet.Microchip believes that its family of products is one of the most secure families of its kind on the market today,when used in the intended manner and under normal conditions.There are dishonest and possibly i

10、llegal methods used to breach the code protection feature.All of these methods,to our knowledge,require using the Microchip products in a manner outside the operating specifications contained in Microchips Data Sheets.Most likely,the person doing so is engaged in theft of intellectual property.Micro

11、chip is willing to work with the customer who is concerned about the integrity of their code.Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code.Code protection does not mean that we are guaranteeing the product as“unbreakable.”Code protection is const

12、antly evolving.We at Microchip are committed to continuously improving the code protection features of our products.Attempts to break Microchips code protection feature may be a violation of the Digital Millennium Copyright Act.If such acts allow unauthorized access to your software or other copyrig

13、hted work,you may have a right to sue for relief under that Act.Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters,design and wafer fabrication facilities in Chandler and Tempe,Arizona;Gresham,Oregon and design centers in California and India.The Companys quality syste

14、m processes and procedures are for its PIC MCUs and dsPIC DSCs,KEELOQ code hopping devices,Serial EEPROMs,microperipherals,nonvolatile memory and analog products.In addition,Microchips quality system for the design and manufacture of development systems is ISO 9001:2000 certified.2011 Microchip Tech

15、nology Inc.PreliminaryDS75002A-page 3MRF24J40MC Features:IEEE Std.802.15.4 Compliant RF Transceiver Supports ZigBee,MiWi Development Environment Proprietary Wireless Networking Protocols 4-Wire Serial Peripheral Interface(SPI)with Interrupt Small size:0.9 x 1.3(22.9 mm x 33.0 mm),Surface Mountable:P

16、in Compatible with MRF24J40MB Integrated Crystal,Internal Voltage Regulator,Matching Circuitry,Power Amplifier,Low Noise Amplifier External Antenna Connector:Ultra Miniature Coaxial(U.FL),50 Easy Integration into Final Product:Minimize Product Development,Quicker Time to Market Radio Regulation Cert

17、ified for United States(FCC),Canada(IC),Europe(ETSI)and Australia/New Zealand(C-TICK)Compatible with Microchip microcontroller families(PIC16,PIC18,PIC24,dsPIC33 and PIC32)Range up to 4000 ftOperational:Operating Voltage:2.7V 3.6V(3.3V typical)Temperature Range:-40C to+85C Industrial Low-Current Con

18、sumption:-Rx Mode:25 mA(typical)-Tx Mode:120 mA(typical)-Sleep:12 A(typical)RF/Analog Features:ISM Band 2.405 GHz 2.475 GHz Operation Data Rate:250 kbps-108 dBm Typical Sensitivity with-23 dBm Maximum Input Level+19 dBm Typical Output Power with 45 dB Tx Power Control Range Integrated Low Phase Nois

19、e VCO,Frequency Synthesizer and PLL Loop Filter Digital VCO and Filter Calibration Integrated RSSI ADC and I/Q DACs Integrated LDO High Receiver RSSI Dynamic RangeMAC/Baseband Features:Hardware CSMA-CA Mechanism,Automatic ACK Response and FCS Check Independent Beacon,Transmit and GTS FIFO Supports a

20、ll CCA modes and RSS/LQI Automatic Packet Retransmit Capable Hardware Security Engine(AES-128)with CTR,CCM and CBC-MAC modes Supports Encryption and Decryption for MAC Sub layer and Upper LayerPin Diagram:2345617VINGND8910RESETWAKESDOSDISCKCSNCGNDINT1211GND2.4 GHz IEEE Std.802.15.4 RF Transceiver Mo

21、dule with PA/LNA and External Antenna ConnectorMRF24J40MC DS75002A-page 4Preliminary 2011 Microchip Technology Inc.Table of Contents1.0Device Overview.52.0Circuit Description.113.0Regulatory Approval.174.0Electrical Characteristics.23Appendix A:Revision History.25The Microchip Web Site.27Customer Ch

22、ange Notification Service.27Customer Support.27Reader Response.28Product Identification System.29TO OUR VALUED CUSTOMERSIt is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products.To this end,we will continue to improve

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24、 the back of this data sheet to(480)792-4150.We welcome your feedback.Most Current Data SheetTo obtain the most up-to-date version of this data sheet,please register at our Worldwide Web site at:http:/You can determine the version of a data sheet by examining its literature number found on the botto

25、m outside corner of any page.The last character of the literature number is the version number,(e.g.,DS30000A is version A of document DS30000).ErrataAn errata sheet,describing minor operational differences from the data sheet and recommended workarounds,may exist for current devices.As device/docum

26、entation issues become known to us,we will publish an errata sheet.The errata will specify the revision of silicon and revision of document to which it applies.To determine if an errata sheet exists for a particular device,please check with one of the following:Microchips Worldwide Web site;http:/ Y

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28、2011 Microchip Technology Inc.PreliminaryDS75002A-page 5MRF24J40MC 1.0DEVICE OVERVIEWThe MRF24J40MC is a 2.4 GHz IEEE Std.802.15.4 compliant,surface mount module with integrated crystal,internal voltage regulator,matching circuitry,Power Amplifier(PA),Low Noise Amplifier(LNA)with 50 external antenna

29、 connector.The MRF24J40MC module operates in the non-licensed 2.4 GHz frequency band.The integrated module design frees the integrator from extensive RF and antenna design,and regulatory compliance testing allowing quicker time to market.The MRF24J40MC module is compatible with Microchips ZigBee,and

30、 MiWi Development Environment software stacks.The MiWi Development Environment software stack including the source code is available as a free download,from the Microchip web site:http:/ MRF24J40MC module has received regulatory approvals for modular devices in the United States(FCC)and Canada(IC).M

31、odular approval removes the need for expensive RF and antenna design,and allows the end user to place the MRF24J40MC module inside a finished product and does not require regulatory testing for an intentional radiator(RF transmitter).To maintain conformance,refer to module settings in Section 3.1.1“

32、MRF24J40MC Settings”for the United States and Section 3.2.1“MRF24J40MC Settings”for Canada.The MRF24J40MC module has been tested and conforms to ETS EN 300 328 V1.7.1(2006-10)European Standards.The module tests can be applied toward final product certification and Declaration of Conformity(DoC).To m

33、aintain conformance for Europe,refer to module settings in Section 3.3.1“MRF24J40MC Settings”.Additional testing may be required depending on the end application.1.1Interface DescriptionFigure 1-1 shows a simplified block diagram of the MRF24J40MC module.The module is based on the Microchip Technolo

34、gy MRF24J40 IEEE 802.15.4 2.4 GHz RF Transceiver IC.The module interfaces to many popular Microchip PIC microcontrollers through a 4-wire SPI interface,interrupt,wake,reset,power and ground,as shown in Figure 1-2.Table 1-1 provides the pin descriptions.Serial communication and module configuration f

35、or the MRF24J40MC module are documented in the“MRF24J40 Data Sheet”(DS39776).Refer to the datasheet for specific serial interface protocol and register definitions.Also,see Section 1.3“Operation”for specific register settings that are unique to the MRF24J40MC module.FIGURE 1-1:PIC18FXXXX BLOCK DIAGR

36、AMAntennaU.FLPAPhysicalMACInterfacePowerManagementSPI20 MHzCrystalDigitalI/OPowerPIC18FXXXX IEEE Std.802.15.4 ModuleMRF24J40LNAConnectorMRF24J40MC DS75002A-page 6Preliminary 2011 Microchip Technology Inc.FIGURE 1-2:MICROCONTROLLER TO MRF24J40MC INTERFACETABLE 1-1:PIN DESCRIPTIONPinSymbolTypeDescript

37、ion1GNDGroundGround2RESETDIGlobal hardware Reset pin3WAKEDIExternal wake-up trigger4INTDOInterrupt pin to microcontroller5SDIDISerial interface data input 6SCKDISerial interface clock7SDODOSerial interface data output from MRF24J408CSDISerial interface enable9NCNo connection10VINPowerPower supply11G

38、NDGroundGround12GNDGroundGroundLegend:Pin type abbreviation:D=Digital,I=Input,O=OutputSDOI/OSDISCKINTXMRF24J40MCCSSDISDOSCKINTI/OWAKEVINGNDPIC MCUI/ORESET 2011 Microchip Technology Inc.PreliminaryDS75002A-page 7MRF24J40MC 1.2Mounting DetailsThe MRF24J40MC is a surface mountable module.Module dimensi

39、ons are shown in Figure 1-3.The module Printed Circuit Board(PCB)is 0.032 thick with castellated mounting points on the edge.Figure 1-4 is a recommended host PCB footprint for the MRF24J40MC.The MRF24J40MC has 50 ultra miniature coaxial(U.FL)connector.FIGURE 1-3:MODULE DETAILSFIGURE 1-4:RECOMMENDED

40、PCB FOOTPRINTCaution:The U.FL connector is fragile and can only tolerate very limited number of insertions.MRF24J40MC DS75002A-page 8Preliminary 2011 Microchip Technology Inc.1.3OperationThe MRF24J40MC module is based on the Microchip Technology MRF24J40 2.4 GHz IEEE 802.15.4 RF Transceiver IC.Seria

41、l communication and configuration are documented in the“MRF24J40 Data Sheet”(DS39776).This section emphasizes operational settings that are unique to the MRF24J40MC module design that must be followed for proper operation.1.3.1PA/LNA CONTROLOperation of the PA U3 and LNA U2 is controlled by the MRF2

42、4J40 internal RF state machine through RF switches,U1 and U4,and the GPIO1 and GPIO2 pins on the MRF24J40.Figure 1-5 shows the PA/LNA block diagram.Figure 2-2 is the schematic diagram for the module.The internal RF state machine is configured for the PA/LNA Mode by setting TESTMODE(0 x22)=111.Pins G

43、PIO1 and GPIO2 control the RF switches,PA and LNA automatically when the MRF24J40 receives and transmits data.Voltage regulator U5 supplies a regulated 2.2V to the PA.This provides a stable voltage to the PA over the VINvoltage range of the module.U5 is enabled or shutdown from GPIO3.Ensure that the

44、 GPIO3 direction has been set to output(TRISGP3(0 x34)=1).Setting a logic high(GPIO3(0 x33)=1)enables the voltage regulator and supplies voltage to the PA.Setting a logic low(GPIO3(0 x33)=0)will shutdown the voltage regulator,disabling the PA,and provides the lowest shutdown current.FIGURE 1-5:PA/LN

45、A BLOCK DIAGRAMNote:A complete explanation of the operation of the PA/LNA control is documented in the“MRF24J40 Data Sheet”(DS39776),Section 4.2“External PA/LNA Control”.MRF24J40GPIO1GPIO2U.FLConnectorBalunRFPRFNPAuPG2250T5NLNAPARF SwitchUPG2179TBRF SwitchUPG2179TBLNAuPC8233TKV2 V1V2 V1GPIO3Voltage

46、RegulatorTC1187VCT713VOUTSHDN50 ohm 2011 Microchip Technology Inc.PreliminaryDS75002A-page 9MRF24J40MC 1.3.2ENERGY DETECTION(ED)Before performing an energy detection(see Section 3.6.1“RSSI Firmware Request(RSSI Mode 1)”in the“MRF24J40 Data Sheet”(DS39776),perform the following steps:1.Configure the

47、internal RF state machine to normal operation(TESTMODE(0 x22F)=000).2.Configure GPIO2 and GPIO1 direction for output(TRISGP2(0 x34)=1 and TRISGP1(0 x34)=1).3.Set GPIO2(0 x33)=1 and GPIO1(0 x32)=0.This enables the LNA and disables the PA.4.Perform the energy detection following the steps in Section 3

48、.6.1“RSSI Firmware Request(RSSI Mode 1)”in the“MRF24J40 Data Sheet”(DS39776).1.3.3SLEEPTo get the lowest power consumption from the MRF24J40MC module during Sleep,it is necessary to disable the PA,PA voltage regulator and LNA.To do this,perform the following steps:1.Configure the internal RF state m

49、achine to normal operation(TESTMODE(0 x22F)=000).2.Configure the GPIO3,GPIO2 and GPIO1 direction for output(TRISGP3(0 x34)=1,TRISGP2(0 x34)=1 and TRISGP1(0 x34)=1).3.Set GPIO2(0 x33)=0 and GPIO1(0 x32)=0.This disables the LNA and the PA.4.Set GPIO3(0 x33)=0.This shuts down the voltage regulator U5 t

50、hat supplies 2.2 volts to the PA.5.Put the MRF24J40 to Sleep following the steps in the“MRF24J40 Data Sheet”(DS39776).When waking the module,re-enable the PA/LNA Mode.Note:The LNA will amplify the received signal.The RSSI value will include the receive signal strength plus the LNA amplification.MRF2