M16C User Manual.pdf

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External BusesMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER5.4.8 Chip Selects and Address BusWhen there are insufficient chip select signals, it is necessary to generate chip selects externally. Figure5.4.9 shows an example of a connection in which the CS2 area is divided into four 32K byte areas.M16C/62 GroupCNVSSWRRDBYTEA0 to A17CS2A15A16A171 1623 144 135 126 11874HC138Y1Y2Y3Y4A9A8A7A6A5A4A3A2A1A0D0D1D21234567891011121314IC02827262524232221201918171615A10A11A12A13A14Y1D7D6D5D4D3.....A0 to A14D0 to D7IC3Y4M5M5278M5M5278D0 to D7Memory map000001608000160FFFF16100001617FFF1618000161FFFF1620000162FFFF163000016FFFFF16IC0IC1IC2IC3CS2Figure 5.4.9. Chip selects and address bus529
External BusesMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER5.5 Connectable Memories5.5.1 Operation Frequency and Access TimeConnectable memories depend upon the BCLK frequency f(BCLK). The frequency of f(BCLK) is equal tothat of the BCLK , and is contingent on the oscillator's frequency and on the settings in the system clockselect bits (bit 6 of address 000616, and bits 6 and 7 of address 000716).The following are the conditional equations for the connections. Meet these conditions minimally. Figures5.5.1 and 5.5.2 show the relation between the frequency of BCLK and memory.(1) Read cycle time (tCR)/write cycle time (tCW)Read cycle time (tCR) and write cycle time (tCW) must satisfy the following conditional expressions:• With the Wait option clearedtCR < 10 9 /f(BCLK) and tCW < 10 9 /f(BCLK)• With the Wait option selectedtCR < 2 X 10 9 /f(BCLK) and tCW < 2 X 10 9 /f(BCLK)(2) Address access time [ta(A)]Address access time [ta(A)] must satisfy the following conditional expressions:(a) Vcc = 5V• With the Wait option clearedta(A) < 10 9 /f(BCLK) – 65(ns)*• With the Wait option selectedta(A) < 2 X 10 9 /f(BCLK) – 65(ns)** 65(ns) = td(BCLK – AD) + tsu(DB – RD) – th(BCLK – RD)= (address output delay time) + (data input setup time) – (RD signal output hold time)(b) Vcc = 3V• With the Wait option clearedta(A) < 10 9 /f(BCLK) – 140(ns)*• With the Wait option selectedta(A) < 2 X10 9 /f(BCLK) – 140(ns)** 140(ns) = td(BCLK-AD) + tsu(DB – RD) – th(BCLK – RD)= (address output delay time) + (data input setup time) – (RD signal output hold time)(3) Chip select access time [ta(S)]Chip select access time [ta(S)] must satisfy the following conditional expressions:(a) Vcc = 5V• With the Wait option clearedta(S) < 10 9 /f(BCLK) – 65(ns)*• With the Wait option selectedta(S) < 2 X10 9 /f(BCLK) – 65(ns)** 65(ns) = td(BCLK – CS) + tsu(DB – RD) – th(BCLK – RD)= (chip select output delay time) + (data input setup time) – (RD signal output hold time)530
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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 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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SIM interfaceMitsubishi microcomput
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SI/O3, 4Mitsubishi microcomputersM1
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SI/O3, 4Mitsubishi microcomputersM1
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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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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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Page 571 and 572: Standard CharacteristicsMitsubishi
Page 577 and 578: Absolute error [LSB]Standard Charac
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Page 583 and 584: Appendix 1Mitsubishi microcomputers
Page 585 and 586: 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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