Description: Atmega 16 microcontroller, T/C1 timer interrupt to generate a PWM waveform. ICC AVR compiler environment, the application builder tool menu to generate a simple PWM wave program. This program PA0 as PWM wave output ports. The use of T/C1 timer compare match and overflow twice interrupted PA0 to change the output level. Process: the counter TCNT1 from the initial value began to count, compare match occurs, the PA0 set low, the counter continues to count when an overflow interrupt occurs, the counter back to the initial setting, and PA0 is set to the high level. PA0 port access to a stable and sustainable PWM waveform, change the comparison value in the main program, you can change the waveform duty cycle, and the frequency is the same.
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