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AT90PWM2 Datasheet(PDF) 228 Page - ATMEL Corporation

Part # AT90PWM2
Description  High Performance, Low Power Atmel
PDF  365 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 228 Page - ATMEL Corporation

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4317K–AVR–03/2013
AT90PWM2/3/2B/3B
Figure 20-1. Analog Comparator Block Diagram
(1)(2)
Notes:
1. ADC multiplexer output: see Table 21-4 on page 248.
2. Refer to Figure 3-1 on page 3 and for Analog Comparator pin placement.
3. The voltage on Vref is defined in 21-3 “ADC Voltage Reference Selection” on page 247
20.2
Analog Comparator Register Description
Each analog comparator has its own control register.
A dedicated register has been designed to consign the outputs and the flags of the 3 analog
comparators.
20.2.1
Analog Comparator 0 Control Register – AC0CON
• Bit 7– AC0EN: Analog Comparator 0 Enable Bit
Set this bit to enable the analog comparator 0.
Clear this bit to disable the analog comparator 0.
• Bit 6– AC0IE: Analog Comparator 0 Interrupt Enable bit
Set this bit to enable the analog comparator 0 interrupt.
Clear this bit to disable the analog comparator 0 interrupt.
+
-
Interrupt Sensitivity Control
Analog Comparator 0 Interrupt
AC0IE
AC0IF
AC0O
AC0IS1
AC0IS0
+
-
Interrupt Sensitivity Control
Analog Comparator 1 Interrupt
AC1IE
T1 Capture Trigger
AC1ICE
AC1IF
AC1O
AC1IS1
AC1IS0
+
-
Interrupt Sensitivity Control
Analog Comparator 2 Interrupt
AC0IE
AC2IF
AC2O
AC2IS1
AC2IS0
ACMP0
ACMP1
ACMP2
AC2EN
/3.20
/2.13
/1.60
/6.40
ACMPM
Vref
DAC
AC0M
2 1 0
DAC
Result
AC1EN
AC0EN
AC1M
2 1 0
AC2M
2 1 0
Internal 2.56V
Reference
REFS0
REFS1
Aref
AVcc
DACEN
CLK I/O
CLK I/O
CLK I/O (/2)
(/2)
(/2)
Bit
7
654
3
2
1
0
AC0EN
AC0IE
AC0IS1
AC0IS0
-
AC0M2
AC0M1
AC0M0
AC0CON
Read/Write
R/W
R/W
R/W
R/W
-
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0



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