Atmel ATmega128RFA1低功耗ZigBee解決方案

AtmelATmega128RFA1低功耗ZigBee解決方案Atmel公司的ATmega128RFA1是低功耗CMOS8位MCU,采用AVR增強(qiáng)性RISC架構(gòu)和2.4GHzISM頻段高數(shù)據(jù)速率收發(fā)器,吞吐量達(dá)1MIPSperMHz.無線收發(fā)器的數(shù)據(jù)速率從250kb/s到高達(dá)2Mb/s,還提供幀處理,有杰出的接收靈敏度(-100dBm)和高發(fā)送功率(達(dá)3.5dBm),主要應(yīng)用在ZigBee?/IEEE802.15.4-2006/2003,通用的2.4GHzISM頻段,F4CE,SP100,WirelessHART?,ISM和IPv6/6LoWPAN.本文介紹了ATmega128RFA1主要特性,基本應(yīng)用電路圖和相應(yīng)的材料清單(BOM),以及擴(kuò)展特性應(yīng)用電路圖和評估板特性與電路圖.

TheATmega128RFA1isalow-powerCMOS8bitmicrocontrollerbasedontheAVRenhancedRISCarchitecturecombinedwithahighdataratetransceiverforthe2.4GHzISMband.ItisderivedfromtheATmega1281microcontrollerandtheAT86RF231radiotransceiver.

Byexecutingpowerfulinstructionsinasingleclockcycle,thedeviceachievesthroughputsapproaching1MIPSperMHzallowingthesystemdesignertooptimizepowerconsumptionversusprocessingspeed.

Theradiotransceiverprovideshighdataratesfrom250kb/supto2Mb/s,framehandling,outstandingreceiversensitivityandhightransmitoutputpowerenablingaveryrobustwirelesscommunication.

ATmega128RFA1主要特性:

?HighPerformance,LowPowerAVR?8-BitMicrocontroller

?AdvancedRISCArchitecture

-135PowerfulInstructions–MostSingleClockCycleExecution

-32x8GeneralPurposeWorkingRegisters

-FullyStaticOperation

-Upto16MIPSThroughputat16MHzand1.8V

-On-Chip2-cycleMultiplier

?Non-volatileProgramandDataMemories

-128KBytesofIn-SystemSelf-ProgrammableFlash

?Endurance:2000Write/EraseCycles@85℃

-4KBytesEEPROM

?Endurance:2000Write/EraseCycles@85℃

-16KBytesInternalSRAM

?JTAG(IEEEstd.1149.1compliant)Interface

-Boundary-scanCapabilitiesAccordingtotheJTAGStandard

-ExtensiveOn-chipDebugSupport

-ProgrammingofFlashEEPROM,FusesandLockBitsthroughtheJTAGinterface

?PeripheralFeatures

-MultipleTimer/Counter&PWMchannels

-RealTimeCounterwithSeparateOscillator

-10-bit,330ks/sA/DConverter;AnalogComparator;On-chipTemperatureSensor

-Master/SlaveSPISerialInterface

-TwoProgrammableSerialUSART

-ByteOriented2-wireSerialInterface

?AdvancedInterruptHandler

?WatchdogTimerwithSeparateOn-ChipOscillator

?Power-onResetandLowCurrentBrown-OutDetector

?AdvancedPowerSaveModes

?FullyintegratedLowPowerTransceiverfor2.4GHzISMBand

-SupportedDataRates:250kb/sand500kb/s,1Mb/s,2Mb/s

--100dBmRXSensitivity;TXOutputPowerupto3.5dBm

-HardwareAssistedMAC(Auto-Acknowledge,Auto-Retry)

-32BitIEEE802.15.4SymbolCounter

-BasebandSignalProcessing

-SFR-Detection,Spreading;De-Spreading;Framing;CRC-16Computation

-AntennaDiversityandTX/RXcontrol

-TX/RX128ByteFrameBuffer

?HardwareSecurity(AES,TrueRandomGenerator)

?IntegratedCrystalOscillators(32.768kHz&16MHz)

?I/OandPackage

-38ProgrammableI/OLines

-64-padQFN(RoHS/FullyGreen)

?TemperatureRange:-40℃to85℃Industrial

?Supplyvoltagerange1.8Vto3.6Vwithintegratedvoltageregulators

?UltraLowPowerconsumption(1.8to3.6V)forRx/Tx&AVR:<18.6mA

-CPUActiveMode(16MHz):4.1mA

-2.4GHzTransceiver:RX_ON12.5mA/TX14.5mA(maximumTXoutputpower)

-DeepSleepMode:<250nA@25℃

?SpeedGrade:0–16MHz@1.8–3.6V

ATmega128RFA1應(yīng)用:

?ZigBee?/IEEE802.15.4-2006/2003?–FullAndReducedFunctionDevice(FFD/RFD)

?GeneralPurpose2.4GHzISMBandTransceiverwithMicrocontroller

?RF4CE,SP100,WirelessHART?,ISMApplicationsandIPv6/6LoWPAN

圖1.ATmega128RFA1方框圖

圖2.ATmega128RFA1基本應(yīng)用電路圖

圖2基本應(yīng)用電路圖材料清單(BOM):

圖3.ATmega128RFA1擴(kuò)展特性應(yīng)用電路圖

ATmega128RFA1評估板

TheATmega128RFA1evaluationkitenablesdevelopment,debugginganddemonstrationofIEEE802.15.4compliantwirelessapplicationssuchasZigBeeand6LoWPAN.ThekitcontainstwoevaluationboardsfortheATmega128RFA1device,coveringthe2.4GHzISMbandsforusewithSTK600.

圖4.ATmega128RFA1評估板外形圖

圖5.ATmega128RFA1評估板電路圖

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