AT90PWM2 datasheet(229/365 Pages) ATMEL

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4317K–AVR–03/2013

AT90PWM2/3/2B/3B

• Bit 5, 4– AC0IS1, AC0IS0: Analog Comparator 0 Interrupt Select bit

These 2 bits determine the sensitivity of the interrupt trigger.

The different setting are shown in Table 20-1.

• Bit 2, 1, 0– AC0M2, AC0M1, AC0M0: Analog Comparator 0 Multiplexer register

These 3 bits determine the input of the negative input of the analog comparator.

The different setting are shown in Table 20-2.

20.2.2

Analog Comparator 1Control Register – AC1CON

• Bit 7– AC1EN: Analog Comparator 1 Enable Bit

Set this bit to enable the analog comparator 1.

Clear this bit to disable the analog comparator 1.

• Bit 6– AC1IE: Analog Comparator 1 Interrupt Enable bit

Set this bit to enable the analog comparator 1 interrupt.

Clear this bit to disable the analog comparator 1 interrupt.

• Bit 5, 4– AC1IS1, AC1IS0: Analog Comparator 1 Interrupt Select bit

These 2 bits determine the sensitivity of the interrupt trigger.

The different setting are shown in Table 20-1.

Table 20-1.

Interrupt sensitivity selection

AC0IS1

AC0IS0

Description

Comparator Interrupt on output toggle

Reserved

Comparator interrupt on output falling edge

Comparator interrupt on output rising edge

Table 20-2.

Analog Comparator 0 negative input selection

AC0M2

AC0M1

AC0M0

Description

000“Vref”/6.40

001“Vref”/3.20

010“Vref”/2.13

011“Vref”/1.60

100Analog Comparator Negative Input (ACMPM pin)

101DAC result

110Reserved

111Reserved

Bit

654

AC1EN

AC1IE

AC1IS1

AC1IS0

AC1ICE

AC1M2

AC1M1

AC1M0

AC1CON

Read/Write

R/W

Initial Value

AT90PWM2 Datasheet(PDF) 229 Page - ATMEL Corporation

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