ATXMEGA256A3B_09 ATMEL [ATMEL Corporation], ATXMEGA256A3B_09 Datasheet - Page 48
ATXMEGA256A3B_09
Manufacturer Part Number
ATXMEGA256A3B_09
Description
8/16-bit XMEGA A3B Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATXMEGA256A3B_09.pdf
(102 pages)
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27.3
27.4
8116F–AVR–09/09
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 27-1 on page
•
•
•
The window function is realized by connecting the external inputs of the two analog comparators
in a pair as shown in
Figure 27-2. 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
– 64-level scaler of the VCC, available on negative analog comparator input
– Bandgap voltage reference
– Output from 12-bit DAC
Upper limit of window
Input signal
Lower limit of window
47.
Figure
27-2.
+
+
-
-
AC0
AC1
sensitivity
Interrupt
control
XMEGA A3B
Interrupts
Events
48
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