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Freescale Semiconductor MCF51QE128RM manual Single-Wire Operation, Freescale Semiconductor 311

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internally connected to the receiver input and the RxD pin is not used by the SCI, so it reverts to a general-purpose port I/O pin.

15.3.5.4Single-Wire Operation

When LOOPS is set, the RSRC bit in the same register chooses between loop mode (RSRC = 0) or single-wire mode (RSRC = 1). Single-wire mode implements a half-duplex serial connection. The receiver is internally connected to the transmitter output and to the TxD pin. The RxD pin is not used and reverts to a general-purpose port I/O pin.

In single-wire mode, the TXDIR bit in SCIxC3 controls the direction of serial data on the TxD pin. When TXDIR is cleared, the TxD pin is an input to the SCI receiver and the transmitter is temporarily disconnected from the TxD pin so an external device can send serial data to the receiver. When TXDIR is set, the TxD pin is an output driven by the transmitter. In single-wire mode, the internal loop back connection from the transmitter to the receiver causes the receiver to receive characters that are sent out by the transmitter.

MCF51QE128 MCU Series Reference Manual, Rev. 3

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Freescale Semiconductor MCF51QE128RM manual Single-Wire Operation, Freescale Semiconductor 311

Contents

MCF51QE64 MCF51QE32 Page MCF51QE128 Series Features Page MCF51QE128 Reference Manual MCF51QE128 MCU Series Reference Manual, Rev Contents Section Number Title Freescale Semiconductor Chapter Resets, Interrupts, and General System ControlTitle Chapter Parallel Input/Output Control 127 ColdFire Core Chapter Interrupt Controller CF1INTC Analog Comparator 3V ACMPVLPV1 11.1.5 Internal Clock Source S08ICSV3 Chapter Inter-Integrated Circuit S08IICV2 Section Number TitleReal-Time Counter S08RTCV1 Serial Peripheral Interface S08SPIV3 Chapter Timer/Pulse-Width Modulator S08TPMV3 Chapter Version 1 ColdFire Debug CF1DEBUG Appendix a Revision History Devices in the MCF51QE128/64/32 Series MCF51QE128 Series Features by MCU and PackageFeature MCF51QE128 Chapter Device OverviewXosc MCU Block DiagramMCF51QE128/64/32 Block Diagram Module Versions V1 ColdFire CoreSystem Clocks Internal Clock Source ICS ModuleSystem Clock Distribution Simplified ICS Block DiagramIcsirclk FLL Engaged External FEE FLL Bypassed Internal Low-Power FbilpICS Modes of Operation FLL Engaged Internal FEIStop Stop FLL Bypassed External Low-Power FbelpGet the latest version from freescale.com Get the latest version from freescale.com Device Pin Assignment Chapter Pins and ConnectionsPin Lqfp Pins in bold are added from the next smaller packageRecommended System Connections Basic System Connections Oscillator PowerReset and Rsto Background / Mode Select BKGD/MS General-Purpose I/O and Peripheral Ports ADC Reference Pins VREFH, VreflNumber Port Pin Alt Pin Assignment by Package and Pin Sharing PriorityPin PriorityPort Pin Alt NumberGet the latest version from freescale.com Introduction FeaturesChapter Modes of Operation Overview MCF51QE128/64/32 Power Modes Conceptual DrawingPMC CPU / Power Mode SelectionsRun Stop2 LPrun Mode Regulator StateStop3 Full OnTransition # From Trigger Triggers for Transitions Shown in FigureSecure Mode Debug ModeRun Modes Run ModeLow-Power Run Mode LPrun BDM in Low-Power Run ModeWait Modes Wait ModeLow-Power Wait Mode LPwait BDM in Low-Power Wait ModeStop2 Mode Low-Range Oscillator Considerations for Stop2 Stop3 ModeStop4 Low Voltage Detect or BDM Enabled in Stop Mode CF1CORE On-Chip Peripheral Modules in Stop and Low-Power ModesLow-Power Mode Behavior Abbreviations used in TableIRQ BDCCOP ICSGet the latest version from freescale.com Get the latest version from freescale.com RAM Chapter MemoryMCF51QE128/64/32 Memory Map KbytesLong Byte CPU Access Type Allowed by RegionRegister Addresses and Bit Assignments Read Write Base Address Region ByteColdFire Memory Organization Direct-Page Register Summary Sheet 1 Register Address Name Direct-Page Register Summary Sheet 2Direct-Page Register Summary Sheet 3 High-Page Register Summary Sheet 1 Direct-Page Register Summary Sheet 4High-Page Register Summary Sheet 2 High-Page Register Summary Sheet 3 High-Page Register Summary Sheet 4 0x0 0x1 0x2 0x3 Flash Module Reserved Memory LocationsHigh-Page Register Summary Sheet 5 Reserved Flash Memory AddressesNvprot 0x0 0x1 0x2 0x3 0x000004080x0000040C Reserved Flash Memory Addresses RegisterV1 ColdFire Interrupt Controller Memory Map ColdFire Rapid Gpio Memory MapColdFire Interrupt Controller Memory Map V1 ColdFire Rapid Gpio Memory MapIntccfrc RAMFlash IntcsfrcAddresses Desired Value Values Programmed FeaturesLov-Voltage Programming Sequence Example Fcdiv Field Descriptions Register DescriptionsFlash Clock Divider Register Fcdiv Flash Options Register Fopt and Nvopt10. Fopt Field Descriptions Flash Configuration Register Fcnfg13. Flash Protection Address Range Flash Protection Register Fprot and Nvprot11. Fcnfg Field Descriptions 12. Fprot Field Descriptions0x42 0x00-0x3F0x40 0x41 0x00000-0x1EFFFW1c Command buffers are fullFlash Status Register Fstat Fcbef Fccf Fpviol Faccerr Fblank15. Fcmd Field Descriptions Flash Command OperationsFlash Command Register Fcmd Function Description200 195 ⎟ 200 = 3% Writing the Fcdiv RegisterALL Program and Erase Command Write SequenceCommands Impossible StartFcmd NVM Flash CommandsErase Verify Command 16. Flash Command DescriptionProgram Command 11. Example Program Command Flow Burst Program Command Programming Sector Erase CommandCommand Buffer Empty Sequential13. Example Sector Erase Command Flow 14. Example Mass Erase Command Flow Mass Erase CommandIllegal Flash Operations Flash Access ViolationsFlash Protection Violations Wait ModeBackground Debug Mode Operating ModesSecurity Unsecuring the MCU using Backdoor Key AccessProgram and Erase Times ResetsFlash Reset Sequence Reset While Flash Command ActiveSecurity Device is unsecure SyncSet PRDIV8 and clock divider fields in CSR3 StopMicrocontroller Reset Chapter Resets, Interrupts, and General System ControlCopclks Copt COP Configuration OptionsComputer Operating Properly COP Watchdog Control Bits Clock Source COP Overflow CountInterrupts and Exceptions Illegal Operation ResetIllegal Address Reset Pin Configuration OptionsExternal Interrupt Initialization Power-On Reset OperationLow-Voltage Detect LVD System Edge and Level SensitivityLow-Voltage Warning LVW Interrupt Operation LVD Reset OperationPeripheral Clock Gating LVD Interrupt OperationIrqpdd Interrupt Pin Request Status and Control Register IrqscIrqsc Register Field Descriptions Irqpdd Irqedg Irqpe Irqf Irqie Irqmod IrqackPOR System Reset Status Register SRSPOR LVR System Options Register 1 SOPT1SOPT1 Register Field Descriptions System Options Register 2 SOPT2IIC1PS SDA1 SCL1 System Device Identification Register SDIDH, SdidlSOPT2 Register Field Descriptions SPI1PS SPSCLK1 MOSI1 MISO1 SS1Lvdf Lvdie LVDRE2 Lvdse LVDE2 Bgbe Lvdack Sdidh Register Field DescriptionsSdidl Register Field Descriptions LPR Lprs Lpwui Ppde Ppdc Ppdack SPMSC1 Register Field DescriptionsSPMSC2 Register Field Descriptions Lvdvlvwv 11. LVD and LVW Trip Point Typical Values1Lvwf Lvdv Lvwv Lvwie LvwfTPM3 System Clock Gating Control 1 Register SCGC1System Clock Gating Control 2 Register SCGC2 12. SCGC1 Register Field DescriptionsFLS 13. SCGC2 Register Field DescriptionsRTC SPI2 SPI1 Freescale Semiconductor 109 110 Freescale Semiconductor Freescale Semiconductor 111 112 Freescale Semiconductor Freescale Semiconductor 113 Chapter Parallel Input/Output ControlPort Data and Data Direction Data Direction Control Port Data Register Port Read Port Internal Pull-up EnablePort Slew Rate Enable Pull-up, Slew Rate, and Drive StrengthFreescale Semiconductor 115 Port Data Set, Clear and Toggle Data RegistersPort Drive Strength Select Port Data Clear Registers V1 ColdFire Rapid Gpio FunctionalityKeyboard Interrupts Port Data Set RegistersFreescale Semiconductor 117 Edge Only SensitivityEdge and Level Sensitivity Pull-up/Pull-down ResistorsPort a Registers Pin Behavior in Stop ModesParallel I/O, Keyboard Interrupt, and Pin Control Registers Keyboard Interrupt InitializationPTAD7 PTAD6 PTAD5 PTAD41 PTAD3 PTAD2 PTAD1 PTAD0 Port a Pull Enable Register PtapePort a Data Register Ptad Port a Data Direction Register PtaddPTASE7 PTASE6 PTASE5 PTASE4 PTASE3 PTASE2 PTASE1 PTASE0 Port a Slew Rate Enable Register PtasePort a Drive Strength Selection Register Ptads PTAPE7 PTAPE6 PTAPE5 PTAPE4 PTAPE3 PTAPE2 PTAPE1 PTAPE0Ptads Register Field Descriptions Port B RegistersPort B Data Register Ptbd Port B Data Direction Register PtbddPtbpe Register Field Descriptions Port B Pull Enable Register PtbpePort B Slew Rate Enable Register Ptbse Ptbdd Register Field Descriptions10. Ptbds Register Field Descriptions Port C RegistersPort B Drive Strength Selection Register Ptbds Port C Data Register Ptcd12. Ptcdd Register Field Descriptions Port C Data Direction Register PtcddPort C Data Set Register Ptcset Port C Data Clear Register Ptcclr16. Ptcpe Register Field Descriptions Port C Pull Enable Register PtcpePort C Toggle Register Ptctog 14. Ptcclr Register Field DescriptionsPort D Data Register Ptdd Port C Slew Rate Enable Register PtcsePort D Registers Port C Drive Strength Selection Register Ptcds20. Ptddd Register Field Descriptions Port D Pull Enable Register PtdpePort D Data Direction Register Ptddd 19. Ptdd Register Field DescriptionsPort E Data Register Pted Port D Slew Rate Enable Register PtdsePort E Registers Port D Drive Strength Selection Register Ptdds25. Ptedd Register Field Descriptions Port E Data Direction Register PteddPort E Data Set Register Pteset 24. Pted Register Field DescriptionsPTEPE7 PTEPE6 PTEPE5 PTEPE4 PTEPE3 PTEPE2 PTEPE1 PTEPE0 Port E Pull Enable Register PtepePort E Data Clear Register Pteclr Port E Toggle Register Ptetog30. Ptese Register Field Descriptions Port E Slew Rate Enable Register PtesePort E Drive Strength Selection Register Pteds 29. Ptepe Register Field DescriptionsPort F Data Direction Register Ptfdd Port F Pull Enable Register PtfpePort F Registers Port F Data Register Ptfd35. Ptfse Register Field Descriptions Port F Slew Rate Enable Register PtfsePort F Drive Strength Selection Register Ptfds 34. Ptfpe Register Field Descriptions36. Ptfds Register Field Descriptions Port G RegistersPort G Data Register Ptgd Port G Data Direction Register Ptgdd39. Ptgpe Register Field Descriptions Port G Pull Enable Register PtgpePort G Slew Rate Enable Register Ptgse Port G Drive Strength Selection Register Ptgds41. Ptgds Register Field Descriptions Port H RegistersPort H Data Register Pthd Port H Data Direction Register Pthdd44. Pthpe Register Field Descriptions Port H Pull Enable Register PthpePort H Slew Rate Enable Register Pthse Port H Drive Strength Selection Register PthdsPort J Data Direction Register Ptjdd Port J RegistersPort J Data Register Ptjd 49. Ptjpe Register Field Descriptions Port J Pull Enable Register PtjpePort J Slew Rate Enable Register Ptjse Port J Drive Strength Selection Register Ptjds52. KBI1 Pin Mapping Keyboard Interrupt 1 KBI1 Registers10.1 KBI1 Interrupt Status and Control Register KBI1SC 51. Ptjds Register Field Descriptions10.3 KBI1 Interrupt Edge Select Register KBI1ES Keyboard Interrupt 1 KBI2 Registers10.2 KBI1 Interrupt Pin Select Register KBI1PE 58. KBI2PE Register Field Descriptions 11.1 KBI2 Interrupt Status and Control Register KBI2SC11.2 KBI2 Interrupt Pin Select Register KBI2PE 57. KBI2SC Register Field DescriptionsFreescale Semiconductor 143 11.3 KBI2 Interrupt Edge Select Register KBI2ES59. KBI2ES Register Field Descriptions 144 Freescale Semiconductor Overview Chapter ColdFire CoreMemory Map/Register Description ColdFire Core Programming Model Supervisor/User Access RegistersSupervisor Access Only Registers Data Registers D0-D7Data Address Registers A0-A6Supervisor/User Stack Pointers A7 and OTHERA7 Freescale Semiconductor 149 Condition Code Register CCRCCR Field Descriptions Program Counter PCVector Base Register VBR CPU Configuration Register Cpucr BWD Status Register SRSR Field Descriptions Instruction Description Functional DescriptionInstruction Set Architecture Isac Instruction Enhancements over Revision IsaaException Processing Overview Assignment Numbers Offset Hex Counter Exception Vector AssignmentsVector Stacked SSP → Exception Stack Frame DefinitionAssignment Numbers Offset Hex CounterFS30 Definition Fault Status Encodings2.2 S08 and ColdFire Exception Processing Comparison Format Field EncodingsRTI RTE Exception Processing ComparisonAttribute S08 V1 ColdFire Freescale Semiconductor 159 Access Error ExceptionAddress Error Exception Processor ExceptionsOpwordLine Instruction Class Illegal Instruction Exception10. ColdFire Opword Line Definition Line OpMode Effective AddressFreescale Semiconductor 161 Privilege ViolationTrace Exception Debug Interrupt RTE and Format Error ExceptionUnimplemented Line-A Opcode Unimplemented Line-F OpcodeInterrupt Exception Fault-on-Fault HaltTrap Instruction Exception Unsupported Instruction ExceptionVER REV Reset ExceptionAccess User read-only BDM read-only BDM Load 0x60 D0 Store 0x40 D011. D0 Hardware Configuration Info Field Description Sramsz 12. D1 Hardware Configuration Information Field DescriptionFlashsz Address10 Size Bus Additional Operations CR/W Instruction Execution TimingTiming Assumptions 13. Misaligned Operand ReferencesSource Destination Ax+ D16,Ax D8,Ax,Xi*SF Xxx.wl Move Instruction Execution Times14. Move Byte and Word Execution Times 15. Move Long Execution TimesEffective Address Opcode An+ D16,An D8,An,Xn*SF Xxx.wl #xxx Standard One Operand Instruction Execution Times16. One Operand Instruction Execution Times 17. Two Operand Instruction Execution Times Standard Two Operand Instruction Execution TimesOpcode Effective Address An+ D16,An D8,An,Xn*SF Xxx.wl #xxx Miscellaneous Instruction Execution Times18. Miscellaneous Instruction Execution Times 20. Bcc Instruction Execution Times Branch Instruction Execution Times19. General Branch Instruction Execution Times HCS08 Chapter Interrupt Controller CF1INTCAttribute Interrupt Controller CF1INTC V1 ColdFire Exception Vector Table 0x180 Next 0x134 Next SCI1rx 0x138 SCI1tx 0x13C IICx 0x140 KBIx 0x1440x148 Next ACMPx 0x14C 0x150 Next SCI2rx 0x154 SCI2tx 0x158Freescale Semiconductor 177 Interrupt Source NumberTo V1 ColdFire core Modes of Operation External Signal DescriptionMemory Map and Register Definition CF1INTC Memory Map Memory MapIntc Force Interrupt Register Intcfrc Intcfrc Field Descriptions Freescale Semiconductor 181 Intc Wake-up Control Register IntcwcrINTCPL6P7,6 Field Descriptions ENB Intc Set Interrupt Force Register IntcsfrcIntcwcr Field Descriptions Offset CF1INTCBASE + 0x1F Intccfrc Intc Clear Interrupt Force Register IntccfrcIntcsfrc Field Descriptions Intccfrc Field DescriptionsVecn Swiack Intc Software and Level-nIACK Registers n = 1,2,3,...,7Priority within Level Midpoint Interrupt Request Level and Priority AssignmentsINTCSWIACK, INTCLVLnIACK Field Descriptions 10. Legend for TableTPM2ch0 TPM2ch1 TPM2ch2 TPM2ovfl 12. V1 ColdFire Interrupt AssignmentsTPM1ch0 TPM1ch1 TPM1ch2 TPM1ovfl Handling of Non-Maskable Level 7 Interrupt Requests Emulation of the HCS08’s 1-Level IRQ Handling Initialization InformationApplication Information Freescale Semiconductor 189 Using INTCPL6P7,6 RegistersMore on Software IACKs ISR Code Snippet with Swiack Freescale Semiconductor 191 192 Freescale Semiconductor Freescale Semiconductor 193 Chapter Rapid Gpio RgpioV1 ColdFire Core Freescale Semiconductor 195 RAM Rgpio IFPCore OEP DsocRGPIODATA150 RgpioModule Pin Muxing + Pad Logic On-platform BusRgpio Detailed Signal Descriptions Detailed Signal DescriptionsRgpio Module External I/O Signals Rgpio Read Memory Map Memory Map/Register DefinitionRgpio Write Memory Map DIR Rgpio Data Direction RgpiodirRgpio Data Rgpiodata Rgpiodir Field DescriptionsRgpio Clear Data Rgpioclr Rgpio Pin Enable RgpioenbRgpioset Field Descriptions Rgpio Set Data RgpiosetRgpio Toggle Data Rgpiotog Rgpioclr Field DescriptionsField Description 15-0 Rgpio Toggle Data Application 1 Simple Square-Wave Generation10. Rgpiotog Field Descriptions TOG11. Square-Wave Output Performance Freescale Semiconductor 205 12. Emulated SPI Performance using Gpio OutputsSPI Speed @ Relative CPU f = 50 MHz 29x206 Freescale Semiconductor Acmp Clock Gating Acmp Configuration InformationACMP/TPM Configuration Information Chapter Analog Comparator 3V ACMPVLPV1Interrupt Vectors Freescale Semiconductor 209 210 Freescale Semiconductor Stop2 Mode Operation Block DiagramWait Mode Operation Stop3 Mode OperationAcie ACF AC IRQ ACMP1 ACMP0 ACO ACMOD1 ACMOD2 SET ACF Register DefinitionStatus and Control Register ACMPxSC Acbgs AcpeAcmod InterruptsACMPxSC Field Descriptions Acme214 Freescale Semiconductor Freescale Semiconductor 215 Chapter Analog-to-Digital Converter S08ADC12V1ADC Clock Gating Analog-to-Digital Converter S08ADC12V1 ADC Channel Assignment Module ConfigurationsChannel Assignments Alternate ClockHardware Trigger Temperature SensorFreescale Semiconductor 219 2provides a block diagram of the ADC moduleAD27-AD0 Signal PropertiesName Function Voltage Reference Low Vrefl Analog Power VddadAnalog Ground Vssad Voltage Reference High VrefhInput Select CocoInput Channel Select Adact Status and Control Register 2 ADCSC2Data Result High Register Adcrh ADCSC2 Register Field DescriptionsADCV11 ADCV10 ADCV9 ADCV8 Data Result Low Register AdcrlCompare Value High Register Adccvh ADR10 ADR9 ADR8Adlpc Configuration Register AdccfgCompare Value Low Register Adccvl Adccfg Register Field DescriptionsInput Clock Select Pin Control 1 Register APCTL1Clock Divide Select Conversion ModesADPC15 ADPC14 ADPC13 ADPC12 ADPC11 ADPC10 ADPC9 ADPC8 Pin Control 2 Register APCTL210. APCTL1 Register Field Descriptions ADPC23 Pin Control 3 Register APCTL311. APCTL2 Register Field Descriptions ADPC15ADPC16 12. APCTL3 Register Field DescriptionsADPC21 ADPC20Conversion Control Clock Select and Divide ControlInput Select and Pin Control Hardware TriggerFreescale Semiconductor 231 Initiating ConversionsCompleting Conversions Aborting ConversionsAdiclk Adlsmp Power ControlSample Time and Total Conversion Time 13. Total Conversion Time vs. Control ConditionsAutomatic Compare Function MCU Wait Mode OperationStop3 Mode With Adack Enabled MCU Stop3 Mode OperationMCU Stop2 Mode Operation Stop3 Mode With Adack DisabledFreescale Semiconductor 235 ADC Module Initialization ExampleInitialization Sequence Pseudo-Code ExampleYes Read Adcrh Then Adcrl To Clear Coco Bit Continue External Pins and RoutingReset Initialize ADC Adccfg = ADCSC2 = ADCSC1 = Check No COCO=1?Freescale Semiconductor 237 Analog Supply PinsAnalog Reference Pins Analog Input PinsNoise-Induced Errors Sources of ErrorSampling Error Pin Leakage ErrorFreescale Semiconductor 239 Code Width and Quantization ErrorLinearity Errors Lsb =Code Jitter, Non-Monotonicity, and Missing Codes Freescale Semiconductor 241 242 Freescale Semiconductor Freescale Semiconductor 243 Stop2 Mode ConsiderationsChapter Internal Clock Source S08ICSV3 External OscillatorInternal Clock Source S08ICSV3 Freescale Semiconductor 245 246 Freescale Semiconductor Freescale Semiconductor 247 HGO, RANGE, EREFS, ERCLKEN, Erefsten2is the ICS block diagram Rdiv Irefs FLL Bypassed Internal Low Power FbilpFLL Bypassed External Low Power Fbelp ICS Register SummaryReference Divide Factor ICS Control Register 1 ICSC1ICSC1 Field Descriptions Clks Rdiv Irefs Irclken IrefstenBdiv Range HGO Erefs Erclken Erefsten ICS Control Register 2 ICSC2ICS Trim Register Icstrm ICSC2 Field DescriptionsDMX32 Irefst Clkst Oscinit FTRIM1 DRS ICS Status and Control IcsscIcstrm Field Descriptions Icssc Field Descriptions1024 32 40 MHz Reference range FLL factor DCO range512 16 20 MHz 608 19.92 MHzIREFS=0 CLKS=10 Operational ModesFLL Engaged Internal FEI IREFS=1 CLKS=00 IREFS=0FLL Bypassed External FBE FLL Bypassed Internal Low Power FbilpFLL Engaged External FEE FLL Bypassed Internal FBIStop Mode SwitchingFLL Bypassed External Low Power Fbelp Bus Frequency DividerExternal Reference Clock Low Power Bit UsageDCO Maximum Frequency with 32.768 kHz Oscillator Internal Reference ClockLocal Clock Fixed Frequency ClockSOPT2IIC1PS Module ConfigurationChapter Inter-Integrated Circuit S08IICV2 IIC1 Position OptionsMCF51QE128 Series Block Diagram Highlighting the IIC Modules Freescale Semiconductor 261 262 Freescale Semiconductor Freescale Semiconductor 263 SCL Serial Clock LineSDA Serial Data Line = Unimplemented or Reserved IIC Address Register IicaIIC Frequency Divider Register Iicf Iica Field DescriptionsMult ICR SDA Iicf Field DescriptionsHold Time Values for 8 MHz Bus Speed Hold Times μsICR SCL IIC Divider and Hold ValuesIICC1 Field Descriptions IIC Control Register IICC1TCF IIC Status Register IicsIics Field Descriptions Freescale Semiconductor 269 IIC Data I/O Register IicdIIC Control Register 2 IICC2 Iicd Field DescriptionsGcaen IIC ProtocolIICC2 Field Descriptions Freescale Semiconductor 271 Start SignalSlave Address Transmission Data Transfer Stop SignalRepeated Start Signal Arbitration ProcedureFreescale Semiconductor 273 Clock SynchronizationHandshaking Clock StretchingMaster-Receiver Addresses a Slave-Transmitter 13.4.2 10-bit AddressMaster-Transmitter Addresses a Slave-Receiver Address Detect Interrupt ResetsGeneral Call Address Byte Transfer Interrupt276 Freescale Semiconductor Module Use Initialization/Application InformationModule Initialization Slave Module Initialization Master12. Typical IIC Interrupt Routine Freescale Semiconductor 279 280 Freescale Semiconductor RTC Modes of Operation Chapter Real-Time Counter S08RTCV1ADC Hardware Trigger RTC Clock SourcesInterrupt Vector Freescale Semiconductor 283 MCF51QE128 Block Diagram Highlighting RTC Block and PinsActive Background Mode Irclk RTC Register SummaryLPO ErclkRtif RTC Status and Control Register RtcscRtcsc Field Descriptions RTC Prescaler Divide-by valuesRtcmod Field Descriptions RTC Counter Register RtccntRTC Modulo Register Rtcmod Rtccnt Field DescriptionsKHz Internal Clock MHz External Clock Rtclks = RTC Operation ExamplePrescaler Period RtcpsFreescale Semiconductor 289 Internal 1-kHz Clock Source RTC Clock Rtcps =Rtccnt Rtif 0x52 0x53 0x54 0x55 0x00 0x01290 Freescale Semiconductor Freescale Semiconductor 291 Chapter Serial Communications Interface S08SCIV4SCI Clock Gating Serial Communications Interface S08SCIV4 Module Initialization 294 Freescale Semiconductor Freescale Semiconductor 295 3shows the transmitter portion of the SCI Freescale Semiconductor 297 SCI Receiver Block DiagramLbkdie SCI Baud Rate Registers SCIxBDH, SCIxBDLSCIxBDH Field Descriptions Loops SCI Control Register 1 SCIxC1SCIxBDL Field Descriptions Loops Sciswai Rsrc Wake ILTTIE SCI Control Register 2 SCIxC2SCIxC2 Field Descriptions Tdre Rdrf Idle SCI Status Register 1 SCIxS1SCIxD Framing errorNo parity error Parity errorRXINV1 SCI Status Register 2 SCIxS2SCIxS2 Field Descriptions Lbkdif Rxedgif Rxinv Rwuid BRK13 Lbkde RAFTXINV1 SCI Control Register 3 SCIxC3SCIxC3 Field Descriptions TxdirFreescale Semiconductor 305 SCI Data Register SCIxDBaud Rate Generation Send Break and Queued Idle Transmitter Functional DescriptionBRK13 Receiver Functional DescriptionData Sampling Technique Break Character LengthIdle-Line Wakeup Receiver Wakeup OperationFreescale Semiconductor 309 Interrupts and Status Flags15.3.5.1 8- and 9-Bit Data Modes Stop Mode OperationLoop Mode Additional SCI FunctionsFreescale Semiconductor 311 Single-Wire Operation312 Freescale Semiconductor Freescale Semiconductor 313 Chapter Serial Peripheral Interface S08SPIV3SPI Clock Gating MCF51QE128 Block Diagram Highlighting SPI Block and Pins Freescale Semiconductor 315 316 Freescale Semiconductor Freescale Semiconductor 317 Block DiagramsSPI System Block Diagram SPI Module Block Diagram Freescale Semiconductor 319 SPI Baud Rate GenerationSS Slave Select Spsck SPI Serial ClockMosi Master Data Out, Slave Data Miso Master Data In, Slave Data OutSPIxC1 Field Descriptions Modes of OperationSPI in Stop Modes SPI Control Register 1 SPIxC1Modfen Ssoe Master Mode Slave ModeSPI Control Register 2 SPIxC2 SS Pin FunctionModfen Bidiroe Spiswai SPI Stop in Wait ModeSPI Baud Rate Register SPIxBR SPIxC2 Register Field DescriptionsSPR SPI Status Register SPIxSSPIxBR Register Field Descriptions SpprSPI Data Register SPIxD SPI Clock Formats Freescale Semiconductor 327 10. SPI Clock Formats Cpha =11. SPI Clock Formats Cpha = SPI InterruptsFreescale Semiconductor 329 Mode Fault Detection330 Freescale Semiconductor Freescale Semiconductor 331 Chapter Timer/Pulse-Width Modulator S08TPMV3TPM Clock Gating Timer/Pulse-Width Modulator S08TPMV3 Freescale Semiconductor 333 334 Freescale Semiconductor Freescale Semiconductor 335 336 Freescale Semiconductor Freescale Semiconductor 337 TPM Block DiagramExtclk Signal DescriptionFreescale Semiconductor 339 TPMxCHn TPM Channel n I/O PinsExtclk External Clock Source High-True Pulse of an Edge-Aligned PWM TOF TPM Status and Control Register TPMxSCTPMxSC Field Descriptions TOF Toie Cpwms Clksb Clksa PS2 PS1Clksbclksa TPM Counter Registers TPMxCNTHTPMxCNTLTPM-Clock-Source Selection Prescale Factor SelectionFreescale Semiconductor 343 TPM Counter Modulo Registers TPMxMODHTPMxMODLTPMxCNT158 Any write to TPMxCNTH clears the 16-bit counter TPMxCNT70 Any write to TPMxCNTL clears the 16-bit counterCHnF CHnIE MSnB MSnA ELSnB ELSnA TPM Channel n Status and Control Register TPMxCnSCTPMxMOD158 TPMxMOD70Cpwms MSnBMSnA ELSnBELSnA Mode ConfigurationTPMxCnSC Field Descriptions Mode, Edge, and Level SelectionTPMxCnV70 TPM Channel Value Registers TPMxCnVHTPMxCnVLMode, Edge, and Level Selection TPMxCnV158Freescale Semiconductor 347 CounterCounter Clock Source TPM Clock Source Selection Counter Overflow and Modulo ResetOutput Compare Mode Channel Mode SelectionManual Counter Reset Input Capture Mode15. PWM Period and Pulse Width ELSnA=0 Edge-Aligned PWM ModeFreescale Semiconductor 351 Center-Aligned PWM ModeGeneral Reset OverviewDescription of Reset Operation Interrupt Summary Timer Overflow Interrupt TOF DescriptionInterrupt Local Source Description Enable Description of Interrupt OperationCenter-Aligned PWM Case Channel Event Interrupt DescriptionFreescale Semiconductor 355 Chapter Version 1 ColdFire Debug CF1DEBUGBkgd BDC Version 1 ColdFire Core CF1CoreOEP PSTCsrhrl CSR2D1HRL Modes of OperationsDebug Revision Summary RevisionBDM? BDM Command TypesCommand Type Flash Core Status Command SetBDM GO External Signal DescriptionsDebug Module Signals Description CPU DRc Register Name Width Access Reset Value Section BitsDebug Module Memory Map Configuration/Status Register CSR TRC DDC UHE BTB NPL IPI SSM FID DDH CSR Field DescriptionsBstat FOF TRG Halt Bkpt HRL BKD IPW TRC Method Reference Details Extended Configuration/Status Register XcsrXcsr Reference Summary CPU State CPU Cstat Halt Stop Eseqc Clksw SEC Erase EnbdmApcsc Apce XcsrErase W Eseqc WSEC R Syncpc Interval Configuration/Status Register 2 CSR2CSR2 Reference Summary Xcsr CSR2CSR2 Field Descriptions Pstb Valid Data Locations Oldest to Newest PSTBWA7Start Condition Stop Condition Configuration/Status Register 3 CSR310. CSR3 Reference Summary PstbssBFCDIV8 BDM Address Attribute Register BaarBFC Bfcdiv DIV8 SZM TTM TMM Address Attribute Trigger Register AatrSZM Signal of the processor’s local busBDM memory commands Normal processor access Else Reserved Trigger Definition Register TDRL1EA L2EDL2EA L2T L1TL2T No inversion Invert data breakpoint comparators Three bits disables the address breakpointProgram Counter Breakpoint/Mask Registers PBR0-3, Pbmr DRc 0x09 Pbmr Mask Reset15. PBR0 Field Descriptions DRc 0x08 PBR0Ablr Address Breakpoint Registers ABLR, Abhr17. Pbmr Field Descriptions Abhr21. Dbmr Field Descriptions Data Breakpoint and Mask Registers DBR, Dbmr19. Abhr Field Description Resulting Set of Possible Trigger Combinations Background Debug Mode BDM22. Access Size and Operand Data Location Address1 Access Size Operand LocationCpucrard = CPU Halt23. CPU Halt Sources Halt Source Halt Timing DescriptionCpucrird = Background Debug Serial Interface Controller BDC BDM Communication Details Freescale Semiconductor 385 15. BDC Host-to-Target Serial Bit Timing16. BDC Target-to-Host Serial Bit Timing Logic Freescale Semiconductor 387 BDM Command Set DescriptionsPST Trace Buffer Read Commands Miscellaneous CommandsMemory Commands Core Register CommandsVBR 24. BDM Command Code Field DescriptionsCRG CRG CRNAckenable BDM Command Set Summary25. BDM Command Summary AckdisableReadpstb ReadcregReaddreg Writecreg SyncpcFreescale Semiconductor 393 Disable host/target handshake protocol Always AvailableEnable host/target handshake protocol Always Available 0x030x3A Memory Enter active background mode if enabled Non-intrusive0x32 Host → Target Memory data7-0 Target → 0x36 Data7-00x3B 0x33Xcsrsb 0x37Target → Host 0x16 Memory 0x12 Memory data7-0Target 0x16 Memory Data15-8 Memory data7-0 0x12 MemoryRead CPU control register Active Background No operation Non-intrusiveTarget Memory data7-0 Target → Host Read debug control register Non-intrusive0xA0+CRN Host → Target Dreg data 0x30 Address23-00x50+CRN Host → Target Pstb data 0x310x35 0x39Read CSR3 Status Byte Always Available Read general-purpose CPU register Active BackgroundRead Xcsr Status Byte Always Available Read CSR2 Status Byte Always AvailableFreescale Semiconductor 401 Synchronize PC to PST/DDATA Signals Non-intrusiveWrite CPU control register Active Background 0xC0+CRN Creg dataHost → target Write debug control register Non-intrusive0x80+CRN Dreg data 0x10 Address23-0 Memory Data7-0Write general-purpose CPU register Active Background Write CSR3 Status Byte Always Available Serial Interface Hardware Handshake ProtocolWrite Xcsr Status Byte Always Available Write CSR2 Status Byte Always AvailableFreescale Semiconductor 405 19. Target Acknowledge Pulse ACK20. Handshake Protocol at Command Level Hardware Handshake Abort ProcedureFreescale Semiconductor 407 21signal timing is not drawn to scale21. ACK Abort Procedure at the Command Level Freescale Semiconductor 409 Real-Time Debug SupportReal-Time Trace Support Instructions, generate different encodings Enter user mode26. Processor Status Encodings PST40 DefinitionFreescale Semiconductor 411 Begin Execution of Taken Branch PST =0x08-0x0B PST Values Description 23. Example JMP Instruction Output in PstbPstbddata PST Trace Buffer Pstb18.4.3.3 PST/DDATA Example PstbpstProcessor Status, Debug Data Definition Freescale Semiconductor 415 27. PST/DDATA Specification for User-Mode InstructionsInstruction Operand Syntax PST/DDATA416 Freescale Semiconductor Freescale Semiconductor 417 Supervisor Instruction Set Freescale Semiconductor 419 GND ResetFreescale-Recommended BDM Pinout No Connect420 Freescale Semiconductor Chapter Description Appendix a Revision HistoryChanges between Rev and Rev MCF51QE128RM Rev to Rev ChangesRevision History Page How to Reach Us