STM32F446数据手册

ForfurtherinformationcontactyourlocalSTMicroelectronicssalesoffice.December2014DocID026062Rev41/85STM32F446xxARM®Cortex®-M432bMCU+FPU,225DMIPS,upto512kBFlash/128+4KBRAM,USBOTGHS/FS,17TIMs,3ADCs,20comm.interfacesDatabriefFeatures•Core:ARM®32-bitCortex®-M4CPUwithFPU,Adaptivereal-timeaccelerator(ARTAccelerator™)allowing0-waitstateexecutionfromFlashmemory,frequencyupto180MHz,MPU,225DMIPS/1.25DMIPS/MHz(Dhrystone2.1),andDSPinstructions•Memories–512kBofFlashmemory–128KBofSRAM–Flexibleexternalmemorycontrollerwithupto16-bitdatabus:SRAM,PSRAM,SDRAM/LPSDRSDRAM,FlashNOR/NANDmemories–DualmodeQuadSPIinterface•LCDparallelinterface,8080/6800modes•Clock,resetandsupplymanagement–1.7Vto3.6VapplicationsupplyandI/Os–POR,PDR,PVDandBOR–4-to-26MHzcrystaloscillator–Internal16MHzfactory-trimmedRC(1%accuracy)–32kHzoscillatorforRTCwithcalibration–Internal32kHzRCwithcalibration•Lowpower–Sleep,StopandStandbymodes–VBATsupplyforRTC,20×32bitbackupregisters+optional4KBbackupSRAM•3×12-bit,2.4MSPSADC:upto24channelsand7.2MSPSintripleinterleavedmode•2×12-bitD/Aconverters•General-purposeDMA:16-streamDMAcontrollerwithFIFOsandburstsupport•Upto17timers:2xwatchdog,1xSysTicktimeranduptotwelve16-bitandtwo32-bittimersupto180MHz,eachwithupto4IC/OC/PWMorpulsecounter•Debugmode–SWD&JTAGinterfaces–Cortex®-M4TraceMacrocell™•Upto114I/Oportswithinterruptcapability–Upto111fastI/Osupto90MHz–Upto1125V-tolerantI/Os•Upto20communicationinterfaces–SPDIF-Rx–Upto4×I2Cinterfaces(SMBus/PMBus)–Upto4USARTs/2UARTs(11.25Mbit/s,ISO7816interface,LIN,IrDA,modemcontrol)–Upto4SPIs(45Mbits/s),3withmuxedI2SforaudioclassaccuracyviainternalaudioPLLorexternalclock–2xSAI(serialaudiointerface)–2×CAN(2.0BActive)–SDIOinterface–Consumerelectronicscontrol(CEC)I/F•Advancedconnectivity–USB2.0full-speeddevice/host/OTGcontrollerwithon-chipPHY–USB2.0high-speed/full-speeddevice/host/OTGcontrollerwithdedicatedDMA,on-chipfull-speedPHYandULPI–DedicatedUSBpowerrailenablingon-chipPHYsoperationthroughouttheentireMCUpowersupplyrange•8-to14-bitparallelcamerainterfaceupto54Mbytes/s•CRCcalculationunit•RTC:subsecondaccuracy,hardwarecalendar•96-bituniqueIDTable1.DevicesummaryReferencePartnumberSTM32F446xxSTM32F446MC,STM32F446ME,STM32F446RC,STM32F446RE,STM32F446VC,STM32F446VE,STM32F446ZC,STM32F446ZE.LQFP64(10×10mm)LQFP100(14×14mm)LQFP144(20x20mm)UFBGA144(7x7mm)&'!UFBGA144(10x10mm)WLCSP81®Cortex®-M4withFPUandembeddedFlashandSRAM.......133.2Adaptivereal-timememoryaccelerator(ARTAccelerator™).........133.3Memoryprotectionunit.......................................133.4EmbeddedFlashmemory....................................143.5CRC(cyclicredundancycheck)calculationunit...................143.6EmbeddedSRAM...........................................143.7Multi-AHBbusmatrix........................................143.8DMAcontroller(DMA).......................................153.9Flexiblememorycontroller(FMC)..............................163.10QuadSPImemoryinterface(QUADSPI).........................163.11Nestedvectoredinterruptcontroller(NVIC).......................173.12Externalinterrupt/eventcontroller(EXTI).........................173.13Clocksandstartup..........................................173.14Bootmodes...............................................183.15Powersupplyschemes......................................183.16Powersupplysupervisor.....................................183.16.1InternalresetON..........................................183.16.2InternalresetOFF.........................................183.17Voltageregulator...........................................193.17.1RegulatorON.............................................203.17.2RegulatorOFF............................................213.17.3RegulatorON/OFFandinternalresetON/OFFavailability..........233.18Real-timeclock(RTC),backupSRAMandbackupregisters..........233.19Low-powermodes..........................................243.20VBAToperation.............................................253.21Timersandwatchdogs.......................................25DocID026062Rev43/85STM32F446xxContents43.21.1Advanced-controltimers(TIM1,TIM8).........................273.21.2General-purposetimers(TIMx)...............................273.21.3BasictimersTIM6andTIM7.................................273.21.4Independentwatchdog.....................................283.21.5Windowwatchdog.........................................283.21.6SysTicktimer.............................................283.22Inter-integratedcircuitinterface(I2C)............................283.23Universalsynchronous/asynchronousreceivertransmitters(USART)..293.24Serialperipheralinterface(SPI)................................293.25HDMI(high-definitionmultimediainterface)consumerelectronicscontrol(CEC).......