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 UARTi bit rate generator (i = 0 to 2)b7b0UARTi bit rate generator (i = 0 to 2) [Address 03A116, 03A916, 037916]UiBRG (i = 0 to 2)Can be set to 0016 to FF16 (Note)Note: Write to UARTi bit rate generator when transmission/reception is halted.Transmission enabledb7b01UART0 transmit/receive control register 1U0C1 [Address 03A516]UART1 transmit/receive control register 1U1C1 [Address 03AD16]b7b01UART2 transmit/receive control register 1U2C1 [Address 037D16]Transmit enable bit1 : Transmission enabledTransmit enable bit1 : Transmission enabledWriting transmit data(b15)(b8)b7 b0 b7 b0UART0 transmit buffer register [Address 03A316, 03A216] U0TBUART1 transmit buffer register [Address 03AB16, 03AA16] U1TBUART2 transmit buffer register [Address 037B16, 037A16] U2TBSetting transmission dataWhen CTSi input level = “L”Start transmissionChecking the status of UARTi transmit /receive control register (i = 0 to 2)b7b0UART0 transmit/receive control register 1U0C1 [Address 03A516]UART1 transmit/receive control register 1U1C1 [Address 03AD16]b7b0UART2 transmit/receive control register 1U2C1 [Address 037D16]Transmit buffer empty flag0 : Data present in transmitbuffer register1 : No data present in transmitbuffer register(Writing next transmit data enabled)Transmit buffer empty flag0 : Data present in transmitbuffer register1 : No data present in transmitbuffer register(Writing next transmit data enabled)Writing next transmit data(b15)(b8)b7 b0 b7 b0UART0 transmit buffer register [Address 03A316, 03A216] U0TBUART1 transmit buffer register [Address 03AB16, 03AA16] U1TBUART2 transmit buffer register [Address 037B16, 037A16] U2TBSetting transmission dataTransmission is completeFigure 2.4.9. Set-up procedure of transmission in clock-synchronous serial I/O mode (2)337
Clock-Synchronous Serial I/OMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.4.3 Operation of the Serial I/O (transmission in clock-synchronous serial I/Omode, transfer clock output from multiple pins function selected)In transmitting data in clock-synchronous serial I/O mode, choose functions from those listed in Table2.4.2. Operations of the circled items are described below. Figure 2.4.10 shows the operation timing, andFigures 2.4.11 and 2.4.12 show the set-up procedures.Table 2.4.2. Choosed functionsItemSet-upItemSet-upTransfer clocksourceOInternal clock (f1 / f8 / f32)External clock (CLKi pin)Transmissioninterrupt factorOTransmission buffer emptyTransmission completeCTS functionOCTS function enabledCTS function disabledOutput transfer clockto multiple pins(Note 1)ONot selectedSelectedCLK polarityOOutput transmission data atthe falling edge of thetransfer clockCTS / RTSseparation function(Note 2)OPin shared by CTS and RTSCTS and RTS separatedOutput transmission data atthe rising 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) Setting the transmit enable bit to “1” makes data transmissible status ready.(2) When transmission data is written to the UART1 transmit buffer register, transmission dataheld in the UART1 transmit buffer register is transmitted to the UART1 transmit register insynchronization with the first falling edge of the transfer clock. At this time, the first bit of thetransmission data is transmitted from the TxD1 pin. Then the data is transmitted bit by bitfrom the lower order in synchronization with the falling edges of the transfer clock.(3) When transmission of 1-byte data is completed, the transmit register empty flag goes to “1”,which indicates that the transmission is completed. The transfer clock stops at “H” level. Atthis time, the UART1 transmit interrupt request bit goes to “1”.(4) Setting CLK/CLKS select bit 1 to “1” and setting CLK/CLKS select bit 0 to “1” causes theCLKS1 pin to go to the transfer clock output pin. Change the transfer clock output pin whentransmission is halted.338
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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 301 and 302: 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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