FPGA器件iCE40系列介紹lattice公司的iCE40系列是超低功耗非易式FPGA器件,查找表(LUT)從384到7680.此外還具有嵌入?yún)^(qū)RAM(EBR),非易失可配置存儲器(NVCM)和鎖相環(huán)(PLL),非常適用在低成本量大的消費類和系統(tǒng)應(yīng)用.本文介紹了iCE40系列主要特性和iCE40LP/HX1K器件架構(gòu)圖,以及iCE4016-WLCSP評估板主要特性,電路圖和材料清單.

TheiCE40familyofultra-lowpower,non-volatileFPGAshasfivedeviceswithdensitiesrangingfrom384to7680Look-UpTables(LUTs).InadditiontoLUT-based,low-costprogrammablelogic,thesedevicesfeatureEmbeddedBlockRAM(EBR),Non-volatileConfigurationMemory(NVCM)andPhaseLockedLoops(PLLs).Thesefeaturesallowthedevicestobeusedinlow-cost,high-volumeconsumerandsystemapplications.SelectpackagesofferHigh-CurrentdriversthatareidealtodrivethreewhiteLEDs,oroneRGBLED.TheiCE40devicesarefabricatedona40nmCMOSlowpowerprocess.Thedevicearchitecturehasseveralfeaturessuchasprogrammablelow-swingdifferentialI/Osandtheabilitytoturnoffon-chipPLLsdynamically.Thesefeatureshelpmanagestaticanddynamicpowerconsumption,resultinginlowstaticpowerforallmembersofthefamily.

TheiCE40devicesareavailableintwoversions–ultralowpower(LP)andhighperformance(HX)devices.TheiCE40FPGAsareavailableinabroadrangeofadvancedhalogen-freepackagesrangingfromthespacesaving1.40x1.48mmWLCSPtothePCB-friendly20x20mmTQFP.Table1-1showstheLUTdensities,packageandI/Ooptions,alongwithotherkeyparameters.TheiCE40devicesofferenhancedI/Ofeaturessuchaspull-upresistors.Pull-upfeaturesarecontrollableona“per-pin”basis.

TheiCE40devicesalsoprovideflexible,reliableandsecureconfigurationfromon-chipNVCM.ThesedevicescanalsoconfigurethemselvesfromexternalSPIFlashorbeconfiguredbyanexternalmastersuchasaCPU.LatticeprovidesavarietyofdesigntoolsthatallowcomplexdesignstobeefficientlyimplementedusingtheiCE40familyofdevices.PopularlogicsynthesistoolsprovidesynthesislibrarysupportforiCE40.Latticedesigntoolsusethesynthesistooloutputalongwiththeuser-specifiedpreferencesandconstraintstoplaceandroutethedesignintheiCE40device.Thesetoolsextractthetimingfromtheroutingandback-annotateitintothedesignfortimingverification.Latticeprovidesmanypre-engineeredIP(IntellectualProperty)modules,includinganumberofreferencedesigns,licensedfreeofcharge,optimizedfortheiCE40FPGAfamily.ByusingtheseconfigurablesoftcoreIPcoresasstandardizedblocks,usersarefreetoconcentrateontheuniqueaspectsoftheirdesign,increasingtheirproductivity.

iCE40系列主要特性:

FlexibleLogicArchitecture

?Fivedeviceswith384to7,680LUT4sand10to206I/Os

UltraLowPowerDevices

?Advanced40nmlowpowerprocess

?Aslowas21μAstandbypower

?ProgrammablelowswingdifferentialI/Os

EmbeddedandDistributedMemory

?Upto128KbitssysMEM?EmbeddedBlockRAM

Pre-EngineeredSourceSynchronousI/O

?DDRregistersinI/Ocells

HighCurrentLEDDrivers

?ThreeHighCurrentDriversusedforthreediffer-entLEDsoroneRGBLED

HighPerformance,FlexibleI/OBuffer

?ProgrammablesysIO?buffersupportswiderangeofinterfaces:

–LVCMOS3.3/2.5/1.8

–LVDS25E,subLVDS

–Schmitttriggerinputs,to200mVtypicalhysteresis

–StandardSPIInterface

–InternalNonvolatileConfigurationMemory(NVCM)

–Assmallas1.40x1.48mm

?Programmablepull-upmode

FlexibleOn-ChipClocking

?Eightlow-skewglobalclockresources

?UptotwoanalogPLLsperdevice

FlexibleDeviceConfiguration

?SRAMisconfiguredthrough:

BroadRangeofPackageOptions

?WLCSP,QFN,VQFP,TQFP,ucBGA,caBGA,andcsBGApackageoptions

?Smallfootprintpackageoptions

?Advancedhalogen-freepackaging

圖1.iCE40LP/HX1K器件架構(gòu)圖

iCE40系列主要性能表:

iCE4016-WLCSP評估板

TheiCE4016-WLCSPEvaluationKitisalow-cost,feature-richevaluationplatformtohelpyouevaluateanddevelopwiththeiCE40LP1KFPGAinthe16-WLCSPpackage.OnekeyfeatureistheRGBLEDcontrolcapability.WiththeevaluationkitandtheavailableRGBLEDGUI,youhavecompletecontrolovertheLED.Youcancontrolthecolor,brightness,blinkingandbreathingrateoftheRGBLED.TheGUIisavailableforaPCwithWindowsoraMAC.

iCE4016-WLCSP評估板主要特性:

TheiCE4016-WLCSPEvaluationKitincludes:

?iCE4016-WLCSPEvaluationBoard–TheICE4016-WLCSPEvaluationBoardfeaturesthefollowingon-boardcomponentsandcircuits:

–iCE40(iCE40LP1K-SWG16)deviceina16-ballWLCSPpackage.

–Exampleofaboardusingthis0.35-pitchWLCSPpackage.

–High-currentLEDoutput–Infraredtransmit

–Barcodeemulation

–27MHzoscillator

–iCE40CurrentMeasurements

–StandardUSBcablefordeviceprogramming

–RoHS-compliantpackagingandprocess

?Pre-loadedDemo–Thekitincludesapre-loadeddemotocontroltheonboardRGBLEDinconjunctionwithasoftwarerunGUI.

?USBConnectorCable–AminiBUSBportprovide