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AT90PWM3 Datasheet(PDF) 249 Page - ATMEL Corporation |
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AT90PWM3 Datasheet(HTML) 249 Page - ATMEL Corporation |
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249 / 361 page  250 4317I–AVR–01/08 AT90PWM2/3/2B/3B In accordance with the Table 21-6, these 3 bits select the interrupt event which will generate the trigger of the start of conversion. The start of conversion will be generated by the rising edge of the selected interrupt flag whether the interrupt is enabled or not. In case of trig on PSCnASY event, there is no flag. So in this case a conversion will start each time the trig event appears and the previous conversion is completed Table 21-6. ADC Auto Trigger Source Selection for non amplified conversions ADTS3 ADTS2 ADTS1 ADTS0 Description 0 0 0 0 Free Running Mode 0 0 0 1 Analog Comparator 0 0 0 1 0 External Interrupt Request 0 0 0 1 1 Timer/Counter0 Compare Match 0 1 0 0 Timer/Counter0 Overflow 0 1 0 1 Timer/Counter1 Compare Match B 0 1 1 0 Timer/Counter1 Overflow 0 1 1 1 Timer/Counter1 Capture Event 1 0 0 0 PSC0ASY Event (1) 1. For trigger on any PSC event, if the PSC uses the PLL clock, the core must use PLL/4 clock source. 1 0 0 1 PSC1ASY Event (1) 1 0 1 0 PSC2ASY Event (1) 1 0 1 1 Analog comparator 1 1 1 0 0 Analog comparator 2 110 1Reserved 111 0Reserved 111 1Reserved Table 21-7. ADC Auto Trigger Source Selection for amplified conversions ADTS3 ADTS2 ADTS1 ADTS0 Description 0 0 0 0 Free Running Mode 000 1Reserved 001 0Reserved 001 1Reserved 010 0Reserved 010 1Reserved 011 0Reserved 011 1Reserved 1 0 0 0 PSC0ASY Event (1) 1 0 0 1 PSC1ASY Event (1) |
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