M16C/62 Group DATASHEET

Timers’ functions for three-phase motor controlMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERphase waveform. In this way, a waveform can be picked up from the applicable terminal in a manner inwhich the "L" level of the U phase waveform doesn’t lap over that of the U phase waveform, which has theopposite phase of the U phase waveform. The width of the “L” level too can be adjusted by varying the___ ___values of timer B2, timer A4, and timer A4-1. In dealing with the V and W phases, and V and W phases,the latter are of opposite phase of the former, have the corresponding timers work similarly to dealing with___the U and U phases to generate an intended waveform.A carrier wave of triangular waveformCarrier waveSignal waveTimer B2Trigger signal fortimer Ai start(timer B2 overflowsignal)Timer A4 outputControl signal fortimer A4 reloadTimber B2 interrupt occurresRewriting timer A4 and timer A4-1.Possible to set the number of overflows to generate aninterrupt by use of the interrupt occurrences frequencyset circuitm n mn m p oThe three-phaseshift registershifts insynchronizationwith the fallingedge of the A4output.U phaseoutput signalU phaseoutput signalU phaseU phaseDead timeNote: Set to triangular wave modulation mode and to three-phase mode 1.Figure 1.18.6. Timing chart of operation (1)107