M16C User Manual.pdf

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D-A ConverterMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.8.2 D-A Converter OperationThe following is the D-A converter operation. Figure 2.8.3 shows the set-up procedure.Operation(1) Writing a value to the D-A register starts D-A conversion.(2) Setting the D-Ai output enable bit to “1” outputs an analog signal on the DAi pin.(3) The D-A converter continues outputting an analog signal until the D-A output enable bit is setto “0”.Setting D-A registerb7b0D-A register 0 [Address 03D816] DA0D-A register 1 [Address 03DA16] DA1Output value of D-A conversionSetting D-A control registerb7b0D-A Control register [Address 03DC16]DACOND-A0 output enable bit1 : Output enabledD-A1 output enable bit1 : Output enabledFigure 2.8.3. Set-up procedure of D-A converter415
DMACMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.9 DMAC2.9.1 OverviewDMAC transfers one data item held in the source address to the destination address every time a transferrequest is generated. The following is a DMAC overview.(1) Source address and destination addressBoth the register which indicates a source and the register which indicates a destination comprise of24 bits, so that each can cover a 1M bytes space. After transfer of one bit of data is completed, theaddress in either the source register or the destination register can be incremented. However, bothregisters cannot be incremented. The links between the source and destination are as follows:(a) A fixed address from an arbitrary 1M bytes space(b) An arbitrary 1M bytes space from a fixed address(c) A fixed address from another fixed address(2) The number of bits of data transferredThe number of bit of data indicated by the transfer counter is transferred. If a 16-bit transfer is selected,up to 128 K bytes can be transferred. If an 8-bit transfer is selected, up to 64K bytes can betransferred. The transfer counter is decremented each time one bit of data is transferred, and a DMAinterrupt request occurs when the transfer counter underflows.(3) DMA transfer factor________The DMA transfer factor can be selected from the following 25 factors: falling edge/two edges of INT0/________INT1 pin, timer A0 interrupt request through timer A4 interrupt request, timer B0 interrupt requestthrough timer B5 interrupt request, UART0 transmission interrupt request, UART0 reception interruptrequest, UART1 transmission/UART1 reception interrupt request, UART2 transmission interrupt request,UART2 reception interrupt request, SI/O 3, 4 interrupt request, A-D conversion interrupt request,and software trigger.When software trigger is selected, DMA transfer is generated by writing “1” to software DMA interruptrequest bit. When other factor is selected, DMA transfer is generated by generating correspondinginterrupt request.(4) Channel priorityIf DMA0 transfer request and DMA1 transfer request occur simultaneously, priority is given to DMA0.(5) Writing to a registerWhen writing to the source register or the destination register with DMA enabled, the content of theregister with a fixed address will change at the time of writing. Therefore, the user should not write toa register with a fixed address when the DMA enable bit is set to “1”. The contents of the register with‘forward direction’ selected, and the transfer counter, are changed when reloaded. A reload occurseither when the transfer counter underflows, or when the DMA enable bit is re-enabled, after havingbeen disabled.The reload register can be written to, as in normal conditions.(6) Reading to a registerThe reload register can be read to, as in normal conditions.416
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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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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 BMitsubi
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Counter content (hex)Timer BMitsubi
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Clock-Synchronous Serial I/OMitsubi
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UARTMitsubishi microcomputersM16C /
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Page 379 and 380: UARTMitsubishi microcomputersM16C /
Page 381 and 382: SIM interfaceMitsubishi microcomput
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Page 397 and 398: A-D ConverterMitsubishi microcomput
Page 417 and 418: Converted analog input pinConverted
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Page 439 and 440: CRC Calculation CircuitMitsubishi m
Page 441 and 442: Watchdog TimerMitsubishi microcompu
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Page 445 and 446: Address Match InterruptMitsubishi m
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Page 449 and 450: Key-Input InterruptMitsubishi micro
Page 451 and 452: Key-Input InterruptMitsubishi micro
Page 453 and 454: Power ControlMitsubishi microcomput
Page 461 and 462: Programmable I/O PortsMitsubishi mi
Page 469 and 470: ApplicationsMitsubishi microcompute
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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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