M16C User Manual.pdf

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Clock-Synchronous Serial I/OMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERContinued from the previous pageSetting UART1 bit rate generatorb7b0UART1 bit rate generator [Address 03A916]U1BRGCan be set to 0016 to FF16 (Note)Note: Write to UART1 bit rate generator when transmission/reception is halted.Transmission enabledb7b01UART1 transmit/receive control register 1 [Address 03AD16]U1C1Transmit enable bit1 : Transmission enabledWriting transmit data(b15)(b8)b7 b0 b7 b0UART1 transmit buffer register [Address 03AB16, 03AA16]U1TBSetting transmission dataStart transmissionChecking the status of UART1 transmit/receieve control registerb7b0UART1 transmit/receive control register 1 [Address 03AD16]U1C1Transmit buffer empty flag0 : Data present in transmit buffer register1 : No data present in transmit buffer register (Writing next transmit data enabled)Writing next transmit data(b15)(b8)b7 b0 b7 b0UART1 transmit buffer register [Address 03AB16, 03AA16]U1TBSetting transmission dataTransmission is completeFigure 2.4.12. Set-up procedure of transmission in clock-synchronous serial I/O mode, transferclock output from multiple pins function selected (2)341
Clock-Synchronous Serial I/OMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.4.4 Operation of Serial I/O (reception in clock-synchronous serial I/O mode)In receiving data in clock-synchronous serial I/O mode, choose functions from those listed in Table 2.4.3.Operations of the circled items are described below. Figure 2.4.13 shows the operation timing, and Figures2.4.14 and 2.4.15 show the set-up procedures.Table 2.4.3. Choosed functionsItemSet-upItemSet-upTransfer clocksourceOInternal clock (f1 / f8 / f32)External clock (CLKi pin)Continuous receivemodeODisabledEnabledRTS functionORTS function enabledRTS function disabledOutput transfer clockto multiple pins(Note 1)ONot selectedSelectedCLK polarityOInput reception data atthe rising edge of thetransfer clockCTS / RTSseparation function(Note 2)OPin shared by CTS and RTSCTS and RTS separatedInput reception data atthe falling edge of thetransfer clockData logic selectfunction(Note 3)ONo reverseReverseTransfer clockOLSB firstMSB firstTXD, RXD I/Opolarity reverse bit(Note 3)ONo reverseReverseNote 1: This can be selected only when UART1 is used in combination with the internal clock. When this function is_______ ______________ _______selected, neither UART1 CTS/RTS function, nor UART0 CTS/RTS separation function can be utilized. Set the_______ _______UART1 CTS/RTS disable bit to “1”._______ _______Note 2: UART0 only. (UART1 CTS/RTS function cannot be used when this function is selected.)Note 3: UART2 only.Operation (1) Writing dummy data to the UARTi transmit buffer register, setting the receive enable bit to “1”,and the transmit enable bit to “1”, makes the data receivable status ready. At this time, the________output from the RTSi pin goes to “L” level, which informs the transmission side that the datareceivable status is ready (output the transfer clock from the IC on the transmission side after_______checking that the RTS output has gone to “L” level).(2) In synchronization with the first rising edge of the transfer clock, the input signal to the RxDipin is stored in the highest bit of the UARTi receive register. Then, data is taken in by shiftingright the content of the UARTi reception data in synchronization with the rising edges of thetransfer clock.(3) When 1-byte data lines up in the UARTi receive register, the content of the UARTi receiveregister is transmitted to the UARTi receive buffer register. The transfer clock stops at “H”level. At this time, the receive complete flag and the UARTi receive interrupt request bit goesto “1”.(4) The receive complete flag goes to “0” when the lower-order byte of the UARTi buffer registeris read.342
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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 AMitsubi
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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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