atxmega128a3-mu ATMEL Corporation, atxmega128a3-mu Datasheet - Page 40

• Manufacturer Part Number: atxmega128a3-mu
• Description: 8/16-bit Xmega Microcontroller
• Manufacturer: ATMEL Corporation

25.3
25.4
8068A–AVR–02/08
Input Selection
Window Function
The Analog comparators have a very flexible input selection and the two comparators grouped
in a pair may be used to realize a window function. One pair of analog comparators is shown in
Figure 25-1 on page
•
•
•
The window function is realized by connecting the inputs of the two analog comparators in a pair
as shown in
Figure 25-2. Analog comparator window function
Input selection from pin
Internal signals available on both analog comparator inputs
6-bit scale down of VCC, available on both analog comparator inputs
– Pin 0, 1, 2, 4, 6 selectable to positive input of analog comparator
– Pin 0, 1, 3, 5, 7 selectable to negative input of analog comparator
– Bandgap Reference voltage
– Output from 12-bit DAC
Figure
Upper limit of window
Input signal
Lower limit of window
25-2.
39.
+
+
-
-
AC0
AC1
sensitivity
Interrupt
control
Interrupts
ATxmega A3
Events
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