79CHAPTER 6 8-BIT TIMER/EVENT COUNTERS 5 AND 6CHAPTER 6 8-BIT TIMER/EVENT COUNTERS 5 AND 6The timers incorporated into theμPD78083 subseries are outlined below.(1) 8-bit timers/event counters 5 and 6 (TM5 and TM6)This can be used to serve as an interval timer, an external event counter, square wave output with any selectedfrequency PWM, etc. It cannot be used as a 16-bit timer/event counter (See CHAPTER 6 8-BIT TIMER/EVENTCOUNTERS 5 AND 6).(2) Watchdog timer (WDTM)WDTM can perform the watchdog timer function or generate non-maskable interrupt requests, maskableinterrupt requests and RESET at the preset time intervals (See CHAPTER 7 WATCHDOG TIMER).(3) Clock output control circuitThis circuit supplies a clock obtained by dividing the main system clock, to other devices (See CHAPTER 8CLOCK OUTPUT CONTROL CIRCUIT).(4) Buzzer output control circuitThis circuit outputs the buzzer frequency obtained by dividing the main system clock (See CHAPTER 9BUZZER OUTPUT CONTROL CIRCUIT).Table 6-1 Timer/Event Counter Types and Functions8-bit Timer/Event Counters 5 and 6 Watchdog TimerType Interval timer 2 channels 1 channelNoteExternal event counter √ —Function Timer output √ —PWM output √ —Square-wave output √ —Interrupt request √ √Note Watchdog timer can perform either the watchdog timer function or the interval timer function.
