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Timer 0
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Features
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The IO File register that holds the current count is TCNT0.
Its behavior is controlled by a set of other IO File registers:
- TIFR (Timer Interrupt Flag Register) holds the Timer 0 interrupt flag:
- TIMSK (Timer Interrupt Mask) contains the flag that enables/disables Timer 0 interrupt:
- TCCR0 (Timer 0 Control Register) register defines the prescaling source of Timer 0.
When external input pin is selected, Timer 0 clock source will be the line 0 of port A:
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