AT90PWM2B-16SU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT90PWM2B-16SU

8-bit Atmel Microcontroller with 8K Bytes In-System Programmable Flash

Atmel Corporation 

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.

Table 20-1.

AC0IS1

0

0

1

1

Interrupt sensitivity selection

AC0IS0

Description

0

Comparator Interrupt on output toggle

1

Reserved

0

Comparator interrupt on output falling edge

1

Comparator interrupt on output rising edge

• 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.

Table 20-2.

AC0M2

0

0

0

0

1

1

1

1

Analog Comparator 0 negative input selection

AC0M1

AC0M0

Description

0

0

“Vref”/6.40

0

1

“Vref”/3.20

1

0

“Vref”/2.13

1

1

“Vref”/1.60

0

0

Analog Comparator Negative Input (ACMPM pin)

0

1

DAC result

1

0

Reserved

1

1

Reserved

20.2.2

Analog Comparator 1Control Register – AC1CON

Bit

Read/Write

Initial Value

7

AC1EN

R/W

0

6

AC1IE

R/W

0

5

AC1IS1

R/W

0

4

AC1IS0

R/W

0

3

AC1ICE

R/W

0

2

AC1M2

R/W

0

1

AC1M1

R/W

0

• 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.

0

AC1M0

R/W

0

AC1CON

4317K–AVR–03/2013

229

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