Stellaris® LM3S1968 Evaluation BoardStellaris® LM3S1968 Evaluation BoardFeaturesBlock DiagramEvaluation Kit ContentsEvaluation Board SpecificationsFeatures of the LM3S1968 MicrocontrollerHardware DescriptionLM3S1968 Evaluation BoardLM3S1968 Microcontroller OverviewHibernation ModuleClockingResetPower SuppliesDebuggingUSB Device Controller FunctionsUSB OverviewUSB to JTAG/SWDVirtual COM PortSerial Wire OutOrganic LED DisplayFeaturesControl InterfacePower SupplyDesign GuidelinesFurther ReferenceOther PeripheralsSpeakerPush SwitchesUser LEDBypassing PeripheralsInterfacing to the EVBUsing the In-Circuit Debugger InterfaceSchematicsConnection DetailsComponent LocationsEvaluation Board DimensionsI/O Breakout PadsRecommended ConnectorsARM Target PinoutReferencesEK-LM3S1968-03 Copyright © 2007–2010 Texas InstrumentsUser’s ManualStellaris® LM3S1968 Evaluation Board2 January 6, 2010CopyrightCopyright © 2007–2010 Texas Instruments, Inc. All rights reserved. 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Texas Instruments108 Wild Basin, Suite 350Austin, TX 78746http://www.ti.com/stellarisStellaris® LM3S1968 Evaluation BoardJanuary 6, 2010 3Table of ContentsChapter 1: Stellaris® LM3S1968 Evaluation Board .......................................................................................7Features.............................................................................................................................................................. 8Block Diagram .................................................................................................................................................... 8Evaluation Kit Contents ...................................................................................................................................... 9Evaluation Board Specifications ..................................................................................................................... 9Features of the LM3S1968 Microcontroller......................................................................................................... 9Chapter 2: Hardware Description..................................................................................................................11LM3S1968 Evaluation Board............................................................................................................................ 11LM3S1968 Microcontroller Overview............................................................................................................ 11Hibernation Module....................................................................................................................................... 11Clocking ........................................................................................................................................................ 11Reset............................................................................................................................................................. 11Power Supplies............................................................................................................................................. 12Debugging..................................................................................................................................................... 12USB Device Controller Functions ..................................................................................................................... 13USB Overview............................................................................................................................................... 13USB to JTAG/SWD....................................................................................................................................... 13Virtual COM Port........................................................................................................................................... 13Serial Wire Out.............................................................................................................................................. 14Organic LED Display ........................................................................................................................................ 14Features........................................................................................................................................................ 14Control Interface ........................................................................................................................................... 14Power Supply................................................................................................................................................ 14Design Guidelines......................................................................................................................................... 14Further Reference......................................................................................................................................... 14Other Peripherals.............................................................................................................................................. 15Speaker......................................................................................................................................................... 15Push Switches .............................................................................................................................................. 15User LED ...................................................................................................................................................... 15Bypassing Peripherals...................................................................................................................................... 15Interfacing to the EVB....................................................................................................................................... 16Using the In-Circuit Debugger Interface ........................................................................................................... 16Appendix A: