M16C User Manual.pdf

Timer AMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERUp/down flagb7 b6 b5 b4 b3 b2 b1 b0Symbol Address When resetUDF 038416 0016Bit symbolTA0UDTA1UDTA2UDTA3UDTA4UDTA2PTA3PTA4PBit nameTimer A0 up/down flagTimer A1 up/down flagTimer A2 up/down flagTimer A3 up/down flagTimer A4 up/down flagTimer A2 two-phase pulsesignal processing select bitTimer A3 two-phase pulsesignal processing select bitTimer A4 two-phase pulsesignal processing select bit0 : Down count1 : Up countFunctionThis specification becomes validwhen the up/down flag content isselected for up/down switchingcause0 : two-phase pulse signalprocessing disabled1 : two-phase pulse signalprocessing enabledWhen not using the two-phasepulse signal processing function,set the select bit to “0”R WOne-shot start flagb7 b6 b5 b4 b3 b2 b1 b0Symbol Address When resetONSF 038216 00X000002Bit symbolTA0OSTA1OSTA2OSTA3OSTA4OSBit nameTimer A0 one-shot start flagTimer A1 one-shot start flagTimer A2 one-shot start flagTimer A3 one-shot start flagTimer A4 one-shot start flagFunctionNothing is assigned.In an attempt to write to this bit, write “0”. The value, if read, turns out to be indeterminate.TA0TGLTA0TGHTimer A0 event/triggerselect bit1 : Timer startWhen read, the value is “0”b7 b60 0 : Input on TA0IN is selected (Note)0 1 : TB2 overflow is selected1 0 : TA4 overflow is selected1 1 : TA1 overflow is selectedNote: Set the corresponding port direction register to “0”.R WFigure 2.2.4. Timer A-related registers (3)284