atxmega192a1-cu ATMEL Corporation, atxmega192a1-cu Datasheet - Page 40

• Manufacturer Part Number: atxmega192a1-cu
• Description: Atxmega64a1 8/16 Bit Microcontroller With 64/128/192/256k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

25.3
25.4
40
Input Selection
Window Function
ATxmega A1
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 positive analog comparator inputs
Internal signals available on negative analog comparator inputs
– Pin 0, 1, 2, 3, 4, 5, 6 selectable to positive input of analog comparator
– Pin 0, 1, 3, 5, 7 selectable to negative input of analog comparator
– Output from 12-bit DAC
– 6-bit scale down of VCC, available on negative analog comparator input
– Bandgap voltage reference
– 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
Events
8067A–AVR–02/08