M16C/62 Group DATASHEET

Timer BMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERWhen measuring measurement pulse time interval from falling edge to falling edgeCount sourceMeasurement pulse“H”“L”Transfer(indeterminate value)Transfer(measured value)Reload registertransfer timingcounter(Note 1)(Note 1)(Note 2)Timing at which counterreaches “000016”Count start flag“1”“0”Timer Bi interruptrequest bitTimer Bi overflow flag“1”“0”“1”“0”Cleared to “0” when interrupt request is accepted, or cleared by software.Note 1: Counter is initialized at completion of measurement.Note 2: Timer has overflowed.Figure 1.17.20. Operation timing when measuring a pulse periodCount sourceMeasurement pulseReload registertransfer timing“H”“L”counterTransfer(indeterminatevalue)Transfer(measured value)Transfer(measuredvalue)Transfer(measured value)(Note 1)(Note 1)(Note 1)(Note 1)(Note 2)Timing at which counterreaches “000016”Count start flagTimer Bi interruptrequest bitTimer Bi overflow flag“1”“0”“1”“0”“1”“0”Cleared to “0” when interrupt request is accepted, or cleared by software.Note 1: Counter is initialized at completion of measurement.Note 2: Timer has overflowed.Figure 1.17.21. Operation timing when measuring a pulse width99