M16C User Manual.pdf

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A-D ConverterMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSelecting Sample and holdb7b01A-D control register 2 [Address 03D416]ADCON2A-D conversion method select bit1 : With sample and holdSetting A-D control register 0 andA-D control register 1b70 0 1 1b0A-D control register 0[Address 03D616] ADCON0Invalid in repeat sweep mode 1Repeat sweep mode 1 is selected(Note)Trigger select bit0 : Software triggerA-D conversion start flag0 : A-D conversion disabledFrequency select bit 00 : fAD/4 is selected1 : fAD/2 is selectedb70 0 1 1b0A-D control register 1 [Address 03D716]ADCON1A-D sweep pin select bit (Note)b1 b00 0 : AN0 (1 pin)0 1 : AN0, AN1 (2 pins)1 0 : AN0 to AN2 (3 pins)1 1 : AN0 to AN3 (4 pins)A-D operation mode select bit 1 (Note)0 (Must always be “0” in repeat sweep mode 1)8/10-bit mode select bit0 : 8-bit mode1 : 10-bit modeFrequency select bit 10 : fAD/2 or fAD/4 is selected1 : fAD is selectedVref connect bit1 : Vref connectedNote: Rewrite to analog input pin select bit after changing A-D operation mode.External op-amp connection mode bitb7 b60 0 : ANEX0 and ANEX1 are not usedSetting A-D conversion start flagb71b0A-D control register 0 [Address 03D616]ADCON0A-D conversion start flag1 : A-D conversion startedConverts non-selected pin after converting pinsselected through the A-D sweep pin select bit.Start A-D conversionTransmitting conversion result to A-D register i(b15)b7(b8)b0 b7b0A-D register 0 [Address 03C116, 03C016] AD0A-D register 1 [Address 03C316, 03C216] AD1A-D register 2 [Address 03C516, 03C416] AD2A-D register 3 [Address 03C716, 03C616] AD3A-D register 4 [Address 03C916, 03C816] AD4A-D register 5 [Address 03CB16, 03CA16] AD5A-D register 6 [Address 03CD16, 03CC16] AD6A-D register 7 [Address 03CF16, 03CE16] AD7Eight low-order bits of A-D conversion resultDuring 10-bit modeTwo high-order bits of A-D conversion resultDuring 8-bit modeWhen read, the content is indeterminateSetting A-D conversion start flagb70b0A-D control register 0 [Address 03D616]ADCON0A-D conversion start flag0 : A-D conversion disabledStop A-D conversionFigure 2.7.21. Set-up procedure of repeat sweep 1 mode403
A-D ConverterMitsubishi microcomputers<strong>M16C</strong> / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER2.7.10 Precautions for A-D Converter(1) Write to each bit (except bit 6) of A-D control register 0, to each bit of A-D control register 1,and to bit 0 of A-D control register 2 when A-D conversion is stopped (before a trigger occurs).In particular, when the Vref connection bit is changed from 0 to 1, start A-D conversion afteran elapse of 1 µs or longer.(2) To reduce conversion error due to noise, connect a voltage to the AVcc pin and to the Vref pin froman independent source. It is recommended to connect a capacitor between the AVss pin and theAVcc pin, between the AVss pin and the Vref pin, and between the AVss pin and the analog inputpin (ANi). Figure 2.7.22 shows the an example of connecting the capacitors to these pins.MicrocomputerVCCAVCCVREFC1C2AVSSANiC3Note 1:Note 2:C1 0.47 µF, C2 0.47 µF, C3 100 pF(for reference)Use thick and shortest possible wiringto connect capacitors.Figure 2.7.22. Use of capacitors to reduce noice(3) Set the direction register of the following ports to input: the port corresponding to a pin to beused as an analog input pin and external trigger input pin (P97).(4) In using a key-input interrupt, none of the 4 pins (AN4 through AN7) can be used as an A-Dconversion port (if the A-D input voltage goes to “L” level, a key-input interrupt occurs).(5) If using the A-D converter with Vcc = 2.7V to 4.0 V:Use only a divided frequency for fAD (undivided fAD is not allowed).Select without the Sample & Hold feature.Select 8-bit mode.(6) Rewrite to analog input pin after changing A-D operation mode. The two cannot be set at thesame time.(7) When using the one-shot or single sweep modeConfirm that A-D conversion is complete before reading the A-D register.(Note: When A-D conversion interrupt request bit is set, it shows that A-D conversion is completed.)(8) When using the repeat mode or repeat sweep mode 0 or 1Use the undivided main clock as the internal CPU clock.(9) Use AD under 10 MHz. When XIN is over 10 MHz, divide it.404
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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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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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UARTMitsubishi microcomputersM16C /
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Page 381 and 382: SIM interfaceMitsubishi microcomput
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Page 439 and 440: CRC Calculation CircuitMitsubishi m
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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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