atxmega128a4-mu ATMEL Corporation, atxmega128a4-mu Datasheet - Page 38

• Manufacturer Part Number: atxmega128a4-mu
• Description: Atxmega16a4 8/16-bit Avr Xmega Microcontroller
• Manufacturer: ATMEL Corporation

25.3
25.4
38
Input Selection
Window Function
ATxmega A4
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 selectable to positive input of analog comparator
– Pin 0, 1, 3 selectable to negative input of analog comparator
– Bandgap Reference voltage
– Output from 12-bit DAC
Figure 25-2 on page
Upper limit of window
Input signal
Lower limit of window
37.
38.
+
+
-
-
AC0
AC1
sensitivity
Interrupt
control
Interrupts
Events
8069A–AVR–02/08