M16C User Manual.pdf

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Timer AMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSelecting event counter mode and functionsb71 10 1 0 0b00 1Timer Ai mode register (i= 3, 4) [Address 039916, 039A16]TAiMR (i= 3, 4)Selection of event counter mode0 (Must always be “0” when using two-phase pulse signal processing)0 (Must always be “0” when using two-phase pulse signal processing)1 (Must always be “1” when using two-phase pulse signal processing)0 (Must always be “0” when using two-phase pulse signal processing)Count operation type select bit1 : Free-run typeTwo-phase pulse signal processing operation select bit1 : Multiply-by-4 processing operationTwo-phase pulse signal processing select bitb7b0Up/down flag [address 038416]UDFTimer A3 two-phase pulse signal processing select bit1 : Two-phase pulse signal processing enabledTimer A4 two-phase pulse signal processing select bit1 : Two-phase pulse signal processing enabledSetting divide ratio(b15)b7(b8)b0 b7 b0 Timer A3 register [Address 038D16, 038C16]TA3Timer A4 register [Address 038F16, 038E16] TA4Can be set to 000016 to FFFF16Setting count start flagb7b0Count start flag [Address 038016]TABSRTimer A3 count start flagTimer A4 count start flagStart countFigure 2.2.19. Set-up procedure of 2-phase pulse signal process in event counter mode, multiply-by-4 mode selected299
Counter content (hex)Timer AMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.2.9 Operation of Timer A (one-shot timer mode)In one-shot timer mode, choose functions from those listed in Table 2.2.9. Operations of the circled itemsare described below. Figure 2.2.20 shows the operation timing, and Figure 2.2.21 shows the set-upprocedure.Table 2.2.9. Choosed functionsItemSet-upCount sourcePulse output functionCount start conditionOOInternal count source (f1 / f8 / f32 / fc32)No pulses outputPulses outputExternal trigger input (falling edge of input signal to the TAiIN pin)External trigger input (rising edge of input signal to the TAiIN pin)Timer overflow (TB2/TAj/TAk overflow)O Writing “1” to the one-shot start flagNote: j = i – 1, but j = 4 when i = 0; k = i + 1, but k = 0 when i = 4.Operation(1) Setting the one-shot start flag to “1” with the count start flag set to “1” causes the counter toperform a down count on the count source. At this time, the TAiOUT pin outputs an “H” level.(2) The instant the value of the counter becomes “000016”, the TAiOUT pin outputs an “L” level,and the counter reloads the content of the reload register and stops counting. At this time, thetimer Ai interrupt request bit goes to “1”.(3) If a trigger occurs while a count is in progress, the counter reloads the value in the reloadregister again and continues counting. The reload timing is in step with the next count sourceinput after the trigger.(4) Setting the count start flag to “0” causes the counter to stop and to reload the content of thereload register. Also, the TAiOUT pin outputs an “L” level. At this time, the timer Ai interruptrequest bit goes to “1”.FFFF16n = reload register content(1) Start count(2) Stop count(3) Start count Start count (4) Stop countnReloadReloadReloadTimer Ai interruptrequest bit000116Count start flag “1”“0”Write signal toone-shot start flagOne-shot pulse outputfrom TAiOUT pin“H”“L”“1”“0”Set to “1” by software1 / fi X (n)Cleared to “0” by software1 / fi X (n+1)TimeFigure 2.2.20. Operation timing of one-shot modeCleared to “0” when interrupt request is accepted, or cleared by software300
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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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Page 263 and 264: CPU Rewrite Mode (Flash Memory Vers
Page 265 and 266: Functions To Inhibit Rewriting (Fla
Page 267 and 268: Appendix Parallel I/O Mode (Flash M
Page 269 and 270: Appendix Standard Serial I/O Mode (
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Page 291 and 292: ProtectMitsubishi microcomputersM16
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Page 295 and 296: Timer AMitsubishi microcomputersM16
Page 301 and 302: Counter content (hex)Timer AMitsubi
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UARTMitsubishi microcomputersM16C /
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SIM interfaceMitsubishi microcomput
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SI/O3, 4Mitsubishi microcomputersM1
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Converted analog input pinConverted
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D-A ConverterMitsubishi microcomput
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CRC Calculation CircuitMitsubishi m
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Key-Input InterruptMitsubishi micro
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Key-Input InterruptMitsubishi micro
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Power ControlMitsubishi microcomput
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Programmable I/O PortsMitsubishi mi
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ApplicationsMitsubishi microcompute
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Timer A1 countercontent (hex)Timer
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Timer A ApplicationsMitsubishi micr
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DMAC ApplicationsMitsubishi microco
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DMAC ApplicationsMitsubishi microco
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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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