AT90PWM2 datasheet(250/365 Pages) ATMEL

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4317K–AVR–03/2013

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

00Free Running Mode

Analog Comparator 0

External Interrupt Request 0

Timer/Counter0 Compare Match

Timer/Counter0 Overflow

Timer/Counter1 Compare Match B

Timer/Counter1 Overflow

Timer/Counter1 Capture Event

PSC0ASY Event (1)

For trigger on any PSC event, if the PSC uses the PLL clock, the core must use PLL/4 clock

source.

PSC1ASY Event(1)

PSC2ASY Event(1)

Analog comparator 1

Analog comparator 2

01Reserved

10Reserved

11Reserved

Table 21-7.

ADC Auto Trigger Source Selection for amplified conversions

ADTS3

ADTS2

ADTS1

ADTS0

Description

00Free Running Mode

01Reserved

10Reserved

11Reserved

00Reserved

01Reserved

10Reserved

11Reserved

PSC0ASY Event (1)

PSC1ASY Event(1)

AT90PWM2 Datasheet(PDF) 250 Page - ATMEL Corporation

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