M16C User Manual.pdf

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Clock-Synchronous Serial I/OMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERExample of wiring(Note)MicrocomputerCLKiTXDiCTSiReceiver side ICCLKRXDPortNote : Since TXD2 pin is N-channel open drain,this pin needs pull-up resistor.Example of operationTransfer clock(1) Transmission enabled(2) Confirming CTS(3) Start transmission Tc(4) Transmission is complete(5) Transmit next dataTransmitenable bit (TE)Transmitbuffer emptyflag (Tl)CTSiCLKi“1”“0”“1”“0”“H”“L”Data is set to UARTi transmit buffer registerTCLKTransferred from UARTi transmit buffer register to UARTi transmit registerStopped pulsing because CTSi = “H”Stopped pulsing becausetransfer enable bit = “0”TxDiD0 D1 D2 D3 D4 D5 D6 D7D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7Transmit registerempty flag(TXEPT)Transmitinterrupt requestbit (IR)“1”“0”“1”“0”Cleared to “0” when interrupt request is accepted, or cleared by softwareShown in ( ) are bit symbols.The above timing applies to the following settings:• Internal clock is selected.• CTS function is selected.• CLK polarity select bit = “0”.• Transmit interrupt cause select bit = “0”.Tc = TCLK = 2(n + 1) / fifi: frequency of BRGi count source (f1, f8, f32)n: value set to BRGiFigure 2.4.7. Operation timing of transmission in clock-synchronous serial I/O mode335
Clock-Synchronous Serial I/OMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSetting UARTi transmit/receive mode register (i=0 to 2)b70 0 0b00 1UART0 transmit/receive mode registerU0MR [Address 03A016]UART1 transmit/receive mode registerU1MR [Address 03A816]b70 0 0b00 1UART2 transmit/receive mode registerU2MR [Address 037816]Must be fixed to “001”Must be fixed to “001”Internal/external clock select bit0 : Internal clockInvalid in clock synchronous I/O modeInvalid in clock synchronous I/O modeInvalid in clock synchronous I/O modeSleep select bitMust be “0” in clock synchronous I/O modeInternal/external clock select bit0 : Internal clockInvalid in clock synchronous I/O modeInvalid in clock synchronous I/O modeInvalid in clock synchronous I/O modeTXD, RXD I/O polarity reverse bitUsually set to “0”Setting UARTi transmit/receive control register 0 (i=0 to 2)b70 00 0b0UART0 transmit/receive control register 0U0C0 [Address 03A416]UART1 transmit/receive control register 0U1C0 [Address 03AC16]BRG count source select bitb1 b00 0 : f1 is selected0 1 : f8 is selected1 0 : f32 is selected1 1 : InhibitedCTS/RTS function select bit(Valid when bit 4 = “0”)0 : CTS function is selected (Note)Transmit register empty flag0 : Data present in transmit register(during transmission)1 : No data present in transmit register(transmission completed)CTS/RTS disable bit0 : CTS/RTS function enabledData output select bit0 : TxDi pin is CMOS output1 : TxDi pin is N-channel open-drain outputCLK polarity select bit0 : Transmission data is output at falling edgeof transfer clock and reception data is inputat rising edgeTransfer format select bit0 : LSB firstb70 00 0b0UART2 transmit/receive control register 0U2C0 [Address 037C16]BRG count source select bitb1 b00 0 : f1 is selected0 1 : f8 is selected1 0 : f32 is selected1 1 : InhibitedCTS/RTS function select bit(Valid when bit 4 = “0”)0 : CTS function is selected (Note)Transmit register empty flag0 : Data present in transmit register(during transmission)1 : No data present in transmit register(transmission completed)CTS/RTS disable bit0 : CTS/RTS function enabledCLK polarity select bit0 : Transmission data is output at falling edgeof transfer clock and reception data is inputat rising edgeTransfer format select bit0 : LSB firstNote: Set the corresponding port direction register to “0” .Setting UART transmit/receive control register 2 and UART2 transmit/receive control register 1b70 0b00 0UART transmit/receive control register 2UCON [Address 03B016]b70 0b0UART2 transmit/receive control register 1U2C1 [Address 037D16]UART0 transmit interrupt cause select bit0 : Transmit buffer empty (Tl = 1)UART2 transmit interrupt cause select bit0 : Transmit buffer empty (Tl = 1)UART1 transmit interrupt cause select bit0 : Transmit buffer empty (Tl = 1)Valid when bit 5 = “1”CLK/CLKS select bit 10 : Normal mode (CLK output is CLK1 only)Data logic select bit0 : No reverseError signal output enable bitMust be “0” in clock synchronous I/O modeSeparate CTS/RTS bit0 : CTS/RTS shared pinContinued to the next pageFigure 2.4.8. Set-up procedure of transmission in clock-synchronous serial I/O mode (1)336
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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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Page 299 and 300: Timer AMitsubishi microcomputersM16
Page 301 and 302: Counter content (hex)Timer AMitsubi
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Page 341 and 342: Clock-Synchronous Serial I/OMitsubi
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Page 363 and 364: UARTMitsubishi microcomputersM16C /
Page 381 and 382: SIM interfaceMitsubishi microcomput
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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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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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