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CHAPTER 11 STANDBY FUNCTION(b) Releasing by non-maskable interrupt requestHALT mode is released regardless of whether interrupts are enabled or disabled, and vectored interruptservicing is performed.(c) Releasing by RESET inputWhen HALT mode is released by the RESET signal, execution branches to the reset vector address inthe same manner as the ordinary reset operation, and program execution starts.Figure 11-3. Releasing HALT Mode by RESET InputHALTinstructionWait (2 15 /fX) NoteRESETsignalOperatingmodeHALT modeResetperiodOscillationstabilizationwait statusOperatingmodeClockOscillationOscillationstopOscillationNote 3.28 ms (at fX = 10.0 MHz operation), 6.55 ms (at fX = 5.0 MHz operation)Remark fX: System clock oscillation frequencyTable 11-2. Operation After Releasing HALT ModeReleasing Source MK×× IE OperationMaskable interrupt request0 0 Executes next address instruction.0 1 Executes interrupt servicing.1 × Retains HALT mode.Non-maskable interrupt request − × Executes interrupt servicing.RESET input − − Reset processing×: Don't care168User’s Manual U14801EJ3V1<strong>UD</strong>
CHAPTER 11 STANDBY FUNCTION11.2.2 STOP mode(1) Setting and operation status of STOP modeSTOP mode is set by executing the STOP instruction.Caution Because standby mode can be released by an interrupt request signal, standby mode isreleased as soon as it is set if there is an interrupt source whose interrupt request flag isset and interrupt mask flag is reset. When STOP mode is set, therefore, HALT mode is setimmediately after the STOP instruction has been executed, the wait time set by theoscillation stabilization time selection register (OSTS) elapses, and then the operationmode is set.The operation statuses in STOP mode are shown in the following table.Table 11-3. Operation Statuses in STOP ModeItemClock generatorCPUPort (output latch)16-bit timer 908-bit timer/event counter 80Watchdog timerSerial interface 20External interruptSTOP Mode Operation StatusSystem clock oscillation stoppedOperation stoppedRemains in the state existing before STOP mode was setOperation stoppedOperation enabled only when TI80 is selected for count clockOperation stoppedOperation enabled only when external clock is input to serial clockOperation enabled NoteNote Maskable interrupt that is not maskedUser’s Manual U14801EJ3V1<strong>UD</strong> 169
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User’s ManualµPD789074 Subseries
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NOTES FOR CMOS DEVICES1VOLTAGE APPL
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Regional InformationSome informatio
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INTRODUCTIONReadersPurposeOrganizat
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Documents for Flash Memory WritingP
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CHAPTER 11 STANDBY FUNCTION .......
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LIST OF FIGURES (1/3)Figure No. Tit
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LIST OF FIGURES (3/3)Figure No. Tit
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LIST OF TABLES (2/2)Table No. Title
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CHAPTER 1 GENERAL1.2 Features• RO
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CHAPTER 1 GENERAL1.6 Pin Configurat
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CHAPTER 1 GENERALThe major function
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CHAPTER 1 GENERAL1.8 Block DiagramT
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CHAPTER 1 GENERAL1.10 Differences B
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CHAPTER 2 PIN FUNCTIONS(2) Non-port
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CHAPTER 2 PIN FUNCTIONS(h) RxD20, T
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CHAPTER 2 PIN FUNCTIONS2.3 Pin I/O
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CHAPTER 3 CPU ARCHITECTURE3.1 Memor
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CHAPTER 3 CPU ARCHITECTUREFigure 3-
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CHAPTER 3 CPU ARCHITECTURE3.1.1 Int
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CHAPTER 3 CPU ARCHITECTURE(a) Inter
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CHAPTER 3 CPU ARCHITECTURE3.2.2 Gen
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CHAPTER 3 CPU ARCHITECTURETable 3-3
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CHAPTER 3 CPU ARCHITECTURE3.3 Instr
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CHAPTER 3 CPU ARCHITECTURE3.3.3 Tab
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CHAPTER 3 CPU ARCHITECTURE3.4.2 Sho
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CHAPTER 3 CPU ARCHITECTURE3.4.4 Reg
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CHAPTER 3 CPU ARCHITECTURE3.4.6 Bas
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CHAPTER 4 PORT FUNCTIONSTable 4-1.
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CHAPTER 4 PORT FUNCTIONS4.2.2 Port
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CHAPTER 4 PORT FUNCTIONSFigure 4-5.
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CHAPTER 4 PORT FUNCTIONSFigure 4-7.
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CHAPTER 4 PORT FUNCTIONS4.3 Port Fu
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CHAPTER 4 PORT FUNCTIONS(3) Pull-up
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CHAPTER 5 CLOCK GENERATOR5.1 Clock
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CHAPTER 5 CLOCK GENERATOR5.4 System
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CHAPTER 5 CLOCK GENERATORFigure 5-4
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CHAPTER 5 CLOCK GENERATOR5.6 Changi
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Figure 6-1. Block Diagram of 16-Bit
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CHAPTER 6 16-BIT TIMER 906.3 Contro
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CHAPTER 6 16-BIT TIMER 90(2) Buzzer
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CHAPTER 6 16-BIT TIMER 906.4 Operat
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CHAPTER 6 16-BIT TIMER 906.4.2 Oper
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CHAPTER 6 16-BIT TIMER 906.4.4 16-b
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CHAPTER 6 16-BIT TIMER 906.5 Notes
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CHAPTER 7 8-BIT TIMER/EVENT COUNTER
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CHAPTER 8 WATCHDOG TIMER8.1 Watchdo
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CHAPTER 9 SERIAL INTERFACE 209.1 Fu
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Page 185 and 186: CHAPTER 14 INSTRUCTION SET OVERVIEW
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CHAPTER 16 ELECTRICAL SPECIFICATION
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CHAPTER 16 ELECTRICAL SPECIFICATION
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CHAPTER 18 RECOMMENDED SOLDERING CO
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APPENDIX A DEVELOPMENT TOOLSThe fol
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APPENDIX A DEVELOPMENT TOOLSA.1 Sof
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APPENDIX A DEVELOPMENT TOOLSA.4 Fla
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APPENDIX B NOTES ON TARGET SYSTEM D
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APPENDIX C REGISTER INDEXC.1 Regist
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APPENDIX C REGISTER INDEXC.2 Regist
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APPENDIX D REVISION HISTORYThe foll
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uPD789074 Subseries 8-Bit Single-Chip Microcontrollers UD - Home

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