M16C User Manual.pdf

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Watchdog TimerMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSetting watchdog timer control registerb70 0b0Watchdog timer control register [Address 000F16]WDCReserved bitMust always be “0”Prescaler select bit0 : Divided by 161 : Divided by 128Setting watchdog timer start registerb7b0Watchdog timer start register [Address 000E16]WDTSThe watchdog timer is initialized and starts counting with a write instruction tothis register. The watchdog timer value is always initialized to “7FFF16”regardless of the value written.Generating watchdogtimer interruptSoftware resetb71b0Processor mode register 0 [Address 000416]PM0Software reset bitThe device is reset when this bit is set to “1”. The value of this bitis “0” when read.Figure 2.11.4. Set-up procedure of watchdog timer429
Address Match InterruptMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.12 Address Match Interrupt2.12.1 OverviewThe address match interrupt is used for correcting a ROM or for a simplified debugging-purpose monitor.The following is an overview of the address match interrupt.(1) Enabling/disabling the address match interruptThe address match interrupt enable bit can be used to enable and disable an address match interrupt.It is affected neither by the processor interrupt priority level (IPL) nor the interrupt enable flag (I flag).(2) Timing of the address match interruptAn interrupt occurs immediately before executing the instruction in the address indicated by the addressmatch interrupt register. Set the first address of the instruction in the address match interruptregister. Setting a half address of an instruction or an address of tabulated data does not generate anaddress match interrupt.The first instruction of an interrupt routine does not generate an address match interrupt either.(3) Returning from an address match interruptThe return address put in the stack when an address match interrupt occurs depends on the instructionnot yet executed (the instruction the address match interrupt register indicates). The return addressis not put in the stack. For this reason, to return from an address match interrupt, either rewritethe content of the stack and use the REIT instruction or use the POP instruction to restore the stack tothe state as it was before the interrupt occurred and return by use of a jump instruction.Figure 2.12.1 shows unexecuted instructions and corresponding the stacked addresses.• 16-bit operation code instructions• 8-bit operation code instructions given belowADD.B:S #IMM8,dest SUB.B:S #IMM8,dest AND.B:S #IMM8,destOR.B:S #IMM8,dest MOV.B:S #IMM8,dest STZ.B:S #IMM8,destSTNZ.B:S #IMM8,dest STZX.B:S #IMM81,#IMM82,destCMP.B:S #IMM8,dest PUSHM src POPM destJMPS #IMM8 JSRS #IMM8MOV.B:S #IMM,dest (However, dest = A0/A1)• Instructions other than those listed aboveFigure 2.12.1. Unexecuted instructions and corresponding stacked addresses(4) How to determine an address match interruptAddress match interrupts can be set at two different locations. However, both location will have thesame vector address. Therefore, it is necessary to determine which interrupt has occurred; addressmatch interrupt 0 or address match interrupt 1. Using the content of the stack, etc., determine whichinterrupt has occurred according to the first part of the address match interrupt routine.430
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To all our customersRegarding the c
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Keep safety first in your circuit d
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This manual comprises of eight chap
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Table of ContentsChapter 1 Hardware
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2.5 Clock-Asynchronous Serial I/O (
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4.2.1 Interrupt Enable Flag .......
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Quick Reference to Pages Classified
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Quick Reference to Pages Classified
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DescriptionMitsubishi microcomputer
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Pin DescriptionMitsubishi microcomp
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CPUMitsubishi microcomputersM16C /
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CPUMitsubishi microcomputersM16C /
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ResetMitsubishi microcomputersM16C
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ResetMitsubishi microcomputersM16C
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SFRMitsubishi microcomputersM16C /
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Memory Space Expansion FunctionsMit
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Software ResetMitsubishi microcompu
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Processor ModeMitsubishi microcompu
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Bus SettingsMitsubishi microcompute
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Specified address rangeBus ControlM
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Bus ControlMitsubishi microcomputer
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Clock Generating CircuitMitsubishi
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Clock Generating CircuitMitsubishi
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Wait ModeMitsubishi microcomputersM
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Power controlMitsubishi microcomput
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ProtectionMitsubishi microcomputers
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InterruptMitsubishi microcomputersM
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______INT InterruptMitsubishi micro
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Address Match InterruptMitsubishi m
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Precautions for InterruptsMitsubish
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Watchdog TimerMitsubishi microcompu
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DMACMitsubishi microcomputersM16C /
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TimerMitsubishi microcomputersM16C
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Timer AMitsubishi microcomputersM16
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Timer BMitsubishi microcomputersM16
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Timers’ functions for three-phase
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Serial I/OMitsubishi microcomputers
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Clock synchronous serial I/O modeMi
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Clock asynchronous serial I/O (UART
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UART2 Special Mode RegisterMitsubis
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UART2 Special Mode RegisterMitsubis
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UART2 Special Mode Register 2Mitsub
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UART2 Special Mode Register 2Mitsub
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S I/O3, 4Mitsubishi microcomputersM
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S I/O3, 4Mitsubishi microcomputersM
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A-D ConverterMitsubishi microcomput
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D-A ConverterMitsubishi microcomput
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CRCMitsubishi microcomputersM16C /
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Programmable I/O PortMitsubishi mic
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Usage precautionMitsubishi microcom
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Usage precautionMitsubishi microcom
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Electrical characteristicsMitsubish
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Electrical characteristics (Vcc = 5
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Timing (VCC=5V)Mitsubishi microcomp
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TimingMitsubishi microcomputersM16C
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Timing (Vcc = 5V)Mitsubishi microco
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Electrical characteristics (Vcc = 3
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Mitsubishi microcomputersM16C / 62
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IssuancesignatureReceiptMitsubishi
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Description (Flash Memory Version)M
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CPU Rewrite Mode (Flash Memory Vers
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Functions To Inhibit Rewriting (Fla
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Appendix Parallel I/O Mode (Flash M
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Appendix Standard Serial I/O Mode (
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274Mitsubishi microcomputersM16C /
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ProtectMitsubishi microcomputersM16
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ProtectMitsubishi microcomputersM16
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Counter content (hex)Timer AMitsubi
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Counter content (hex)Timer BMitsubi
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Counter content (hex)Timer BMitsubi
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Clock-Synchronous Serial I/OMitsubi
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UARTMitsubishi microcomputersM16C /
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SIM interfaceMitsubishi microcomput
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Page 393 and 394: SI/O3, 4Mitsubishi microcomputersM1
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Page 397 and 398: A-D ConverterMitsubishi microcomput
Page 417 and 418: Converted analog input pinConverted
Page 429 and 430: D-A ConverterMitsubishi microcomput
Page 431 and 432: DMACMitsubishi microcomputersM16C /
Page 439 and 440: CRC Calculation CircuitMitsubishi m
Page 441 and 442: Watchdog TimerMitsubishi microcompu
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Page 447 and 448: Address Match InterruptMitsubishi m
Page 449 and 450: Key-Input InterruptMitsubishi micro
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Page 453 and 454: Power ControlMitsubishi microcomput
Page 461 and 462: Programmable I/O PortsMitsubishi mi
Page 469 and 470: ApplicationsMitsubishi microcompute
Page 471 and 472: Timer A1 countercontent (hex)Timer
Page 473 and 474: Timer A ApplicationsMitsubishi micr
Page 487 and 488: DMAC ApplicationsMitsubishi microco
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Page 491 and 492: Controlling Power ApplicationsMitsu
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Controlling Power ApplicationsMitsu
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External BusesMitsubishi microcompu
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External ROMMitsubishi microcompute
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Standard CharacteristicsMitsubishi
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Absolute error [LSB]Standard Charac
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Absolute accuracy [mV]Absolute accu
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Appendix 1Mitsubishi microcomputers
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Appendix 2 Hexadecimal instruction
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Appendix 3 Setting register for pin
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MITSUBISHI Single-Chip Microcompute
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