M16C User Manual.pdf

Timer A ApplicationsMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSetting timer A0Selecting timer mode and functionsb70 00 0 0 0b00 0Timer A0 mode register [Address 039616]TA0MRSelection of timer modePulse output function select bit0 : Pulse is not output (TA0OUT pin is a normal port pin)Gate function select bitb4 b30 0 : Gate function not available (TA0IN pin is a normal port pin)0 (Must always be “0” in timer mode)Count source select bitb7 b60 0 : f1b7 b6 Countsource0 00 11 01 1f1f8f32fC32Count source periodf(XIN) : 16MHZ f(XcIN) : 32.768kHZ62.5ns500ns2µs976.56µsSetting divide ratio(b15)b73E16(b8)b0 b77F16b0Timer A0 register [Address 038716, 038616]TA0Setting timer A1Selecting event counter mode and each functionb70 0 0 0 0 0b00 1Timer A1 mode register [Address 039716]TA1MRSelection of event counter modePulse output function select bit]0 : Pulse is not output (TA1OUT pin is a normal port pin)Count polarity select bitUp/down switching cause select bit0 : Up/down flag content0 (Must always be “0” in event counter mode)Count operation type select bit0 : Reload typeFix to “0” when counting timer overflow flagContinued to the next pageFigure 3.1.3. Set-up procedure of long-period timers (1)458