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1、MicrochipPIC32MCU音频开发方案关键字：工业控制,以太网,高性能音频Microchip公司的PIC32系列MCU采用5级流水线MIPS32®M4K®32位内核,工作频率80MHz,在零等待状态闪存接入时的性能为1.56DMIPS/MHz(Dhrystone2.1),MCU工作电压2.3V-3.6V,具有众多的外设,有两个编程和调试接口,多达16路10位ADC和两个模拟比较器,主要用于超小型图像/用户接口,以太网/USB/CAN/连接,多任务嵌入控制和高性能音频.本文介绍了PIC32MCU主要特性,方框图
2、,以及PIC32音频开发板主要特性及主要元件,电路图和PCB布局图.MicrochipMicrochip’s32-bitportfoliowiththeMIPS®M4K®offershighperformancemicrocontrollers,andallthetoolsneededtodevelopyourembeddedproject.Withfreesoftware,lowcostdevelopmenttools,andpin/peripheralcompatibilityfrom16-bitproductl
3、ines,PIC32MCUsshortentimetomarketandallowyourdesignstogrow.PIC32givesyourapplicationtheprocessingpower,memoryandperipheralsyourdesignneeds!PIC32MCU主要特性:High-Performance32-bitRISCCPU:•MIPS32®M4K®32-bitcorewith5-stagepipeline•80MHzmaximumfrequency•1.56DMIPS/MHz(D
4、hrystone2.1)performanceatzeroWaitstateFlashaccess•Single-cyclemultiplyandhigh-performancedivideunit•MIPS16e®modeforupto40%smallercodesize•Twosetsof32coreregisterfiles(32-bit)toreduceinterruptlatency•PrefetchCachemoduletospeedexecutionfromFlashMicrocontrollerFea
5、tures:•Operatingvoltagerangeof2.3Vto3.6V•64Kto512KFlashmemory(plusanadditional12KBofBootFlash)•16Kto128KSRAMmemory•Pin-compatiblewithmostPIC24/dsPIC®DSCdevices•Multiplepowermanagementmodes•Multipleinterruptvectorswithindividuallyprogrammablepriority•Fail-SafeCl
6、ockMonitormode•ConfigurableWatchdogTimerwithon-chipLow-PowerRCoscillatorforreliableoperationPeripheralFeatures:•AtomicSET,CLEARandINVERToperationonselectperipheralregisters•Upto8-channelsofhardwareDMAwithautomaticdatasizedetection•USB2.0-compliantfull-speeddevi
7、ceandOn-The-Go(OTG)controller:-DedicatedDMAchannels•10/100MbpsEthernetMACwithMIIandRMIIinterface:DedicatedDMAchannels•CANmodule:-2.0BActivewithDeviceNet™addressingsupport-DedicatedDMAchannels•3MHzto25MHzcrystaloscillatorPeripheralFeatures(Continued):•Internal8M
8、Hzand32kHzoscillators•SixUARTmoduleswith:-RS-232,RS-485andLINsupport-IrDA®withon-chiphardwareencoderanddecoder•UptofourSPImodules•UptofiveI2C™modules•SeparatePLLsforCPUandUS
