M16C User Manual.pdf

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UARTMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERExample of wiringMicrocomputerTransmitter side ICRXDiRTSiTXDPortExample of operationBRGi's countsource(1) Reception enabled(2) Start reception(4) Data isread(3) Receiving iscompletedReceive enablebit (RE)“1”“0”RxDiStart bitD0 D1 D7Stop bitSampled “L”Receive data taken inTransfer clockReceivecomplete flag(RI)RTSiReceive interruptrequest bit(IR)“1”“0”“H”“L”“1”“0”Reception started when transferclock is generated by falling edgeof start bitTransferred from UARTi receive registerto UARTi receive buffer registerCleared to “0” when interrupt request is accepted, or cleared by softwareTiming of transfer data 8 bits long applies to the following settings :•Transfer data length is 8 bits.•Parity is disabled.•One stop bit•RTS function is selected.Figure 2.5.11. Operation timing of reception in UART mode363
UARTMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSetting UARTi transmit/receive mode register (i=0 to 2)b70 00 0 1b00 1UART0 transmit/receive mode registerU0MR [Address 03A016]UART1 transmit/receive mode registerU1MR [Address 03A816]b70 00 0 1b00 1UART2 transmit/receive mode registerU2MR [Address 037816]Serial I/O mode select bitb2 b1 b01 0 1 : Transfer data 8 bits longInternal/external clock select bit0 : Internal clockStop bit length select bit0 : One stop bitValid when bit 6 = “1”Parity enable bit0 : Parity diabledSleep select bit0 : Sleep mode deselectedSerial I/O mode select bitb2 b1 b01 0 1 : Transfer data 8 bits longMust be fixed to “0” in UART modeStop bit length select bit0 : One stop bitValid when bit 6 = “1”Parity enable bit0 : Parity diabledSleep select bit0 : Sleep mode deselectedSetting UARTi transmit/receive control register 0 (i=0 to 2)b70 000 1b0UART0 transmit/receive control register 0U0C0 [Address 03A416]UART1 transmit/receive control register 0U1C0 [Address 03AC16]b70 00 1b0UART2 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 : InhibitedBRG 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”)1 : RTS function is selectedTransmit 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 outputCTS/RTS function select bit(Valid when bit 4 = “0”)1 : RTS function is selectedTransmit register empty flagTransmit 0 : Data register present empty in transmit flag register0 : Data (during present transmission) in transmit register1 (during : No data transmission) present in transmit register1 : No (transmission data present completed) in transmit register(transmission completed)CTS/RTS disable bitMust0 : CTS/RTSbe fixed tofunction“0” in UARTenabledmodeMust be fixed to “0” in UART modeMust be fixed to “0” in UART modeMust be fixed to “0” in UART modeTransfer format select bit0 : LSB firstSetting UART transmit/receive control register 2 and UART2 transmit/receive control register 1b70 0b0UART transmit/receive control register 2UCON [Address 03B016]b70 0b0UART2 transmit/receive control register 1U2C1 [Address 037D16]Invalid in UART modeInvalid in UART modeInvalid in UART modeData logic select bit0 : No reverseInvalid in UART modeMust be fixed to “0” in UART modeError signal output enable bit0 : Output disabledSeparate CTS/RTS bit0 : CTS/RTS shared pinContinued to the next pageFigure 2.5.12. Set-up procedure of reception in UART mode (1)364
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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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ProtectMitsubishi microcomputersM16
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ProtectMitsubishi microcomputersM16
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Counter content (hex)Timer AMitsubi
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Page 327 and 328: Timer BMitsubishi microcomputersM16
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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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